Operation and Maintenance Instructions

Emergency Reserve Manifold - ERM

HTM02-01
Part number 2005715
Revision 05
May 24, 2019
Operation and Maintenance Manual
Emergency Reserve Manifold

This unit is purchased from:

Date purchased:

Model number:

Serial number:

Option(s) included:

Any information, service or spare parts requests should include the serial number and be
directed to:

BeaconMedæs
Telford Crescent, Staveley
Derbyshire S43 3PF

Telephone: +44 (0) 1246 474242

Email: gbn.info@beaconmedaes.com
Website Contacts: www.beaconmedaes.com

BeaconMedæs reserves the right to make changes and improvements to update products
sold previously without notice or obligation.

Atlas Copco Ltd. trading as Atlas Copco Medical

Unit 18 Nuffield Way, Abingdon, Oxfordshire, UK OX14 1RL

Personnel must make themselves familiar with the contents of this manual and the
function of the unit before installing, operating or maintaining.

Abbreviations
Abbreviation Full Description Abbreviation Full Description
BS British Standard kPa Kilo pascals
BSP British Standard Pipe Max Maximum
CO2 Carbon dioxide Med Medical
°C Degree Celsius m Meter
ø Diameter mm Millimetres
ERM Emergency reserve manifold Min Minimum
EN European Standards N2 Nitrogen
1st First N2O Nitrous oxide
HTM Health Technical Memorandum NRV Non-return valve
ID Identification OD Outside Diameter
“ Inch O2 Oxygen
ISO International Standard Organisation % Percentage
Kg Kilograms 2nd Second
Emergency Reserve Manifold

Table of Contents

0. Safety Precautions
1. General Information
2. Installation
3. Commissioning
4. Principles of Operation
5. Maintenance Procedures
6. Component Replacement Procedures
7. Recommended Spares

Figures
1 - ERM General Arrangement
2 - Schematic Diagram
3 & 4 - Typical Installation
5 - Reserve Low Alarm Wiring
6 to 12 - Cylinder header extension
13 - Typical tailpipe and cylinder connection
14 - Relief Valve Inspection
15 - Manifold header Non-Return Valve Inspection
16 - Line Non-return Valve Replacement
17 - Sampling Outlet Replacement
18 - 2nd Stage Regulator Replacement
19 - 1st Stage Regulator Replacement
20 - 2nd Stage Relief Valve Replacement
21 - 1st Stage Relief Valve Replacement
22 - Cylinder Bank Valve Replacement
23 - Cylinder Header Non-return Valve Replace-
ment
24 - Line Pressure Gauge Replacement
25 - Reserve Low Contact Gauge Alarm Wiring

Tables
1 - Relief Valve Set Points
2 - Cylinder Header Extension Kits
3 - Typical pressure settings
4 - Typical cylinder bank changeover pressure.
5 - Sampling Outlet Part Numbers
6 - 2nd Stage Regulator Part Numbers
7 - 2nd Stage Relief Valve Part Numbers
8 - Header Non-return Valve Part Numbers
9 - Line Pressure Gauge Part Numbers
10 - Content Pressure Gauge Part Numbers
11a - Accessories
11b - Spares scheduling

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Emergency Reserve Manifold

Not applicable
0. Safety Precautions 0.6 Cleaning

This section gives safety, storage and handling The manifold should be wiped over with a damp
information for the BeaconMedæs Emergency cloth frequently to remove any dust or foreign
Reserve Manifold only. Component parts lists and substances
descriptions are available on request.
0.7 Safety Notice
Operators should have carefully read and become
familiar with the contents of this manual before Persons undertaking any installation and/or
maintaining the Emergency Reserve Manifold. maintenance must be fully trained in specialist
work of this nature.
Operators are expected to use common sense
safety precautions, good workmanship practices The “PERMIT TO WORK” procedure must be
and follow any related local safety regulations. adhered to for all installations once commissioned.

0.1 Identification of symbols The manifold is designed and built in accordance

with HTM 02-01 regulations and therefore should
The following symbols apply to this product and be installed as such.
are used in these instructions and on the product
in question. The meanings of these symbols are as Oil, grease and jointing compounds must not be
specified below: - used.

Do not attempt to prove the pressure relief valve,

Read instructions under any circumstances, by altering the regulator.
Pressure relief valves must be removed and tested
off site by a registered test centre and a certificate
Ambient temperature range
of conformity issued.

Ambient humidity range

Ambient pressure range

Date of manufacture

Do not dispose of in general waste

0.2 Environmental Transport and Storage

Conditions

All products are separately packaged and stored in

controlled conditions.

0.3 Environmental Operating Conditions

Adverse environmental conditions and harsh

abrasives or chemicals may cause damage to the
unit.

0.4 Environmental Protection

Discard the unit and/or components in any

standard refuse facility. The unit does not contain
and hazardous substances.

0.5 Electromagnetic Interference

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Emergency Reserve Manifold

1. General Information The Emergency Reserve Manifold consists of: -

1. 2 x High Pressure Isolation Valves (1 per
cylinder bank.
1.1 Introduction 2. 2 x Cylinder Pressure Gauges with Contact
Alarms (for signalling reserve low alarm fault).
The BeaconMedæs Emergency Reserve Manifold 3. 1st Stage Pressure Regulator (c/w inlet filter).
(ERM) is principally designed for use as a 4. 2nd Stage Pressure Regulator.
secondary source of supply, for emergency use or 5. Gauge for Distribution System Pressure.
to permit servicing or repair. 6. Integral Non-return Valve Assembly.
7. 1st Stage Pressure Relief Valve.
The ERM supplies one of the following Medical 8. Line Pressure Relief Valve.
gases to a piped distribution system, Oxygen, 9. Lockable Isolation Valve.
Nitrous Oxide, O2/N2O 50%: 50%, Medical Air, 10. Medical Gas Sampling Test point (GEM 10).
Surgical Air, Nitrogen & Carbon Dioxide. 11. Test point Isolation Valve.
12. Pipeline connection point (22mm OD Copper
See figure 1 for general arrangement and figure 2 Tube)
for the schematic diagram. 13. Pressure Relief Exhaust Connection point
(28mm OD Copper Tube).
14. Termination Box For Remote Alarm.
15. 2 x Cylinder Manifold Header Block.
16. 2 x Gas Specific Non-return Valve.
17. Product Label C/W Instructions for Use.
Figure 1 - ERM General Arrangement (2 x 1
18. 4 x Chain Hooks for Cylinder Restraint.
Manifold as standard). Additional Cylinder
Header Extension kits available.
Note: Cylinder Tailpipes are also required but
12 should be ordered separately. Header extensions
are available but are also ordered separately.

(VALVE ‘B’)
9 (Shown in Open Position)
6

13

(VALVE ‘C’)

5
11 (Shown in Closed Position)
4

10

17 3

14

16
2

15 1 18
(VALVE ‘1’) (VALVE ‘2’)

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Figure 2 - Schematic Diagram the ERM from feeding the pipeline during normal
operation of the primary system.

1.2 1st Stage Pressure Regulator

For safe operation with regard to performance,
mechanical strength, resistance to ignition in pure
high pressure oxygen supply and cleanliness,
the unit fully conforms to BS EN ISO 10524-2. A
pressure relief valve connected to the regulator
protects the downstream pressure and is set a
2000 kPa (20 bar).

1.3 2nd Stage Pressure Regula-

tor
For safe operation with regard to performance,
mechanical strength and contamination the
unit fully conforms to BS EN ISO 10524-2, the
second stage pressure regulator is a manually
set diaphragm type and is used to set the system
pressure to suit typical nominal values for 4, 7 and
11 bar pipeline systems.

1.4 Line Pressure Relief Valve

The line pressure relief valves are preset to
the values shown in table 1 for the different
distribution pressures.

Table 1: Relief Valve Set Points

Relief Valve Set Point Nominal Distribution
Pressure
530 kPa (5.3 bar) 400 kPa (4 bar)
1100 kPa (11 bar) 700 kPa (7 bar)
1300 kPa (13 bar) 1100 kPa (11 bar)

The line pressure relief valve is fitted between

the pressure regulator and the isolation valve
(just before the integrated non-return valve),
thus protecting the delivery system from over
pressurisation by discharging to atmosphere in the
Additional manifold headers can be connected to event of regulator failure.
the Emergency Reserve Manifold (ERM) to increase
its gas supply capacity. 1.5 Header Extension For Addi-
The manifold is connected to the distribution tional Cylinders
system downstream of the primary medical gas
supply system. The ERM can be isolated from the The ERM is suppled as standard with cylinder
distribution system by the lockable isolation valve connections for a 2x1 manifold (1 cylinder per
supplied. This valve should be left open during bank).
normal operation, so the ERM will automatically
supply the pipeline with medical gas in the event The ERM can be upgraded from a 2x2 to 2x6
of the primary system failing to supply. manifold using the extension kits referenced in
table 2.
The line pressure regulator should be set slightly
lower than the primary supply pressure to prevent

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Emergency Reserve Manifold

Tabel 2 - Header extension kits

Gas Type 2x1 2x2 2x3 2x4 2x5 2x6

Oxygen 8102371280 8102371281 8102371282 8102371283 8102371284 8102371285

Nitrous
8102371286 8102371287 8102371288 8102371289 8102371290 8102371291
Oxide

Entonox 8102371292 8102371293 8102371294 8102371295 8102371296 8102371297

O2/N2O

Medical Air 8102371298 8102371299 8102371300 8102371301 8102371302 8102371303

Nitrogen 8102371304 8102371305 8102371306 8102371307 8102371308 8102371309

Carbon
8102371310 8102371311 8102371312 8102371313 8102371314 8102371315
Dioxide

Modular Header Rack Assembly 2X1 Modular Header Rack Assembly 2X4

Modular Header Rack Assembly 2X2 Modular Header Rack Assembly 2X5

Modular Header Rack Assembly 2X3 Modular Header Rack Assembly 2X6

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Emergency Reserve Manifold

wall structure and selected fasteners are suitable

1.6 Halogen Free Components for supporting the 16 kg weight of the ERM.

The ERM contains NO HALOGENATED polymers 2.1.3 Identify the centre position of the ERM on
located in the gas stream that may experience the wall and mark.
pressurised oxygen in excess of 3000 kPa (30 Bar)
in normal operation or single fault condition, as 2.1.4 Drill wall and fit wall plugs. Screw the ERM
recommended for safe practise of the medical gas to the wall, checking that it is firmly attached. See
pipeline system. figure 3 & 4 for typical mounting heights.

2. Installation 2.1.5 Loosely connect the supplied ø22mm OD

stub pipe (Item 12, figure 1) to the main pipeline
isolation valve (Item 9, figure 1). Do not fit the
2.1 Installation procedure for O’ring seal till after brazing.
Panel. 2.1.6 Braze the pipework using the fluxless
brazing technique with nitrogen purge.
CAUTION: Ensure no contaminates, oil
or grease come into contact with any of the gas
CAUTION: Ensure the brazed connection
connection/internals.
point is isolated from any other pipeline source
of supply.
2.1.1 Unpack and inspect all items for damage.
2.1.7 Undo the securing nuts on the stub pipes
2.1.2 Check wall for suitability.
and insert the ‘O’ ring supplied into the connection
grooves and tighten.
CAUTION: Supplied fixings are for use
with solid masonry walls only. Alternative Figure 3 - Typical Installation For Use With ‘J’ &
fixing types are not suppled with the unit. For ‘G’ Type Cylinder
securing to alternative wall types, ensure that

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Emergency Reserve Manifold

CAUTION: Supplied fixings are for use

with solid masonry type walls only. Typical ERM
weight is 16kg.

Note - ‘J’ type cylinders typically for Oxygen and Medi-

cal Air.‘G’ type cylinders typically for Nitrous Oxide
and N2O/O2 mix (Entonox).

2.1.8 The pipework should be secured to the

wall using munsen rings (not supplied). It would
be recommended to fit the first pipe support to
the supplied ø22mm OD stub pipe (Item 12, figure
1). The next support should typically be fitted Figure 4 - Typical Installation For use with ‘VF’
within 2m of the first. Type Cylinders

2.1.9 The ø28mm exhaust line (Item 13, figure

1) shall be brazed using fluxless brazing technique
with nitrogen purge.

CAUTION: The ø28mm exhaust line (Item

13, figure 1) needs to be piped away from the
manifold room to a safe location to prevent
buildup of waste gas in an enclosed space in the
event of a regulator failure.

CAUTION: Do not reduce the diameter of

the pipe used for the exhaust line.

CAUTION: Supplied fixings are for use

with solid masonry type walls only. Typical ERM
weight is 16kg.

Note - ‘VF’ size cylinders typically used for CO2

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Emergency Reserve Manifold

Figure 5 - Reserve Low Alarm Wiring 2.2 “Reserve Low” alarm wiring.
To primary supplies 2.2.1 Use a flat bladed screw driver to pop the
“Reserve Low” alarm input terminal cover at the corners.
5 6
(Wired on sight)
2.2.2 Wire the reserve low alarm as shown in
figure 5. (Left and right bank contact gauges are
Left bank
pre-wired)
contact gauge
(pre-wired) 1 1 5 6 2.3 Installation procedure for
2 3 2 4
Modular Manifold Header.
CAUTION: Ensure that all the header rails
supplied are the correct gas type. The gas ID is
stamped onto the flat section of the NRV caps.

Right bank 3 4 2.3.1 Cylinder Header Extension Kits (upgrade

contact gauge to 2x2 manifold). See figure 6 and 7.
(pre-wired)
2.3.1.1 Remove the 3/8” BSP blanking plug and
bonded seal from the end of the header block and
fit 3/8” x 5/8” BSP fitting (supplied with kit) com-
plete with O-ring seals for connection of the exten-
sion header.

2.3.1.2 Offer cylinder support rack up to the

header rail and secure using the M6 x 16 hex head
set screws and flange nut supplied with the exten-
sion kit.

2.3.1.3 Secure the previously fitted 5/8” connector

to the extension header.

2.2.1.4 If no more header extensions are to be

fitted, blank off the end of the header with the 3/8”
BSP plug and bonded seal that was removed in
step 2.3.1.1.

2.3.1.5 Mark and drill the optional extension

bracket wall mount if required. Fit the wall plug
and secure with the No. 10 pan head supplied with
the kit.

CAUTION: Supplied fixings are for use

with solid masonry type walls only. Typical
extension bracket is 1.5kg per side.

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 Emergency Reserve Manifold

Figure 6 - Cylinder header extension fitting de-

tails (upgrade to 2 x 2)
3/8” x 5/8 BSP
C/W seals

3/8” BSP plug and

bonded seal

Wall mounting
holes x 4

Header Extension

Figure 7 - Typical cylinder header extension

layout details (upgrade to 2 x 2), extension kits
from table 2.

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Emergency Reserve Manifold

2.3.2 Additional Cylinder Header Extensions 2.3.2.3 Secure the previously fitted 5/8” connector
(upgrade to 2 x 3 plus manifold). See figure 8 to to the extension header.
12.
2.3.2.4 Repeat 2.3.2.1 & 2.3.2.3 for any additional
CAUTION: Ensure that all the header rails header extensions.
supplied are the correct gas type. The gas ID is
stamped onto the flat section of the NRV caps. 2.3.2.4 If no more header extensions are to be
fitted, blank of the end of the header with the 3/8”
2.3.2.1 Remove the 3/8” BSP blanking plug and BSP plug and bonded seal that was removed in
bonded seal from the end of the header block and step 2.3.2.1.
fit 3/8” x 5/8” BSP fitting (supplied with kit) com-
plete with O-ring seals for connection of the exten- CAUTION: Supplied fixings are for use
sion header. with solid masonry type walls only. Typical
extension bracket is 2.5kg per side.
2.3.2.2 Line up the header connection, mark
mounting hole positions and drill. Fit the wall plug
and secure with the No. 10 pan head supplied with
the kit.

Figure 8 - Cylinder header extension fitting

details (upgrade to 2 x 3 plus)

3/8” BSP plug and Header Extension

bonded seal 3/8” x 5/8 BSP
C/W seals

4 x wall mounting holes

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Emergency Reserve Manifold

Figure 10 - Typical cylinder header extension layout details (upgrade to 2 x 4), extension kits from
table 3.

Figure 11 - Typical cylinder header extension layout details (upgrade to 2 x 5), extension kits from
table 3.

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Emergency Reserve Manifold

Figure 12 - Typical cylinder header extension layout details (upgrade to 2 x 6), extension kits from
table 3.

NOTE - For additional cylinders continue to add the dimensions of the last header kit from either figure 9
or 10 for either single or double racks.

2.4 Cylinder Connection 2.5 Installation check

CAUTION: Ensure that all the tailpipes 2.5.1 Ensure that all tailpipes are connected to
supplied are the correct gas type. The gas ID the cylinders and manifolds on both sides and
is stamped onto the nut that connects to the that the restraint chains are secure around the
header non-return valve. cylinders.

2.4.1 Connect the tailpipes to the non-return 2.5.2 Isolate the panel from the pipeline using
valves on the header racks as shown in figure 13. isolation valve ‘B’ (shown in figure 1).

2.4.2 Refer to hospitals/site policy for safe 2.5.3 Ensure that the left-hand bank high-
cylinder handling (See section 4.6 for typical pressure isolation Valve ‘1’ (Figure 1) is fully open
cylinder handling safety check list), move the by turning anticlockwise, and the right-hand high-
cylinders into place (see figures 3, 7, 9-12) ready pressure isolation valve ‘2’ (Figure 1) is fully closed
for connection to the tailpipes. by turning clockwise.

CAUTION: Only persons who have had 2.5.4 Using 1 cylinder, slowly pressurise
specific training in the safety of medical gases, the left-hand bank (see section 4.7 - Cylinder
manual handling techniques and cylinder operation). The left-hand contents gauge should
changing procedures should be allowed to indicate full cylinder pressure. The distribution
change cylinders on medical gas manifolds or system pressure gauge on the regulator (adjust
medical equipment. as necessary) should read typically as per table 4
(Section 4 - Principle of Operating).
2.4.3 Connect the cylinders to the pin indexed
clamp on the tail pipe, as shown in figure 13. CAUTION: It would be recommended to
Ensure the bodok seal is in place at the opposite set the ERM line pressure at least 0.2 bar below
side to the thumb screw on the pin index clamp the main supply source pressure at full design
before connection. flow to ensure the emergency manifold does
not supply the pipeline during normal primary
NOTE - Pipe index tailpipes to BE EN ISO 21969 are source operation.
supplied as standard. Alternative connection types
are available on request. 2.5.5 Check for leaks. Now ensure all left-hand
bank cylinders are closed.
2.4.4 See section 4.7 for cylinder operation
procedure 2.5.6 Open valve ‘C’ and relieve the pressure
from within the ERM from the sampling outlet
then close valve ‘C’ (Item 10 & 11, Figure 1).

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Emergency Reserve Manifold

2.5.7 Repeat the 2.6.3 to 2.6.6 for the right-hand

cylinder bank.

2.5.8 Check the reserve low alarm is connected

as shown in figure 5.

2.5.9 The installation must now be purged

as per HTM 02-01 for UK installations, or as per
relevant standards if installed outside the UK.

Figure 13 - Typical tailpipe and cylinder connec-

tion

Bodok Seal

Typical
tailpipe with
pin index
clamp

Tailpipe to
non-return valve
connection

Header non-return valve

15 2005715.05
Emergency Reserve Manifold

3. Commissioning regulators is a none relieving type. Always leave

valve ‘C’ closed when finished.

3.1 General 3.3.3 Check that the line pressure does not vary
outside of the requirements of the installation
Commissioning of the ERM must be carried (see table 4, Section 4 - Principle of Operating, for
out in full after initial installation. The object of typical values).
the commissioning procedure is to ensure that
all components are serviceable and that the 3.3.4 Complete the steps in section 4.2 -
overall system is operable and set to the correct Procedure to prime ERM, to bring the ERM online.
distribution pipeline pressure. Suitably qualified
competent personnel who are familiar with this
manual must only undertake commissioning of the 4. Principles of Operation
ERM.
4.1 General
3.2 Preparation
The ERM line pressure is set below the normal
3.2.1 Ensure that all tailpipes are connected to operating range of the primary supply. While the
the cylinders and manifolds on both sides and primary supply is functioning within it’s design
that the restraint chains are secure around the limits, the ERM will not feed gas into the pipeline.
cylinders. If the primary supply fails, causing the pipeline
pressure to fall to the ERM’s set point it will
3.2.2 Ensure that the outlet pipe from the ERM is automatically start feeding gas to the pipeline.
connected to the distribution system of the same
gas service, downstream of the main supply unit Table 3: Typical pressure settings for HTM02-
and isolation valve ‘A’ (shown in figure 2). 01 primary and emergency medical gas
supply system, during normal pipeline system
3.2.3 Ensure that the ERM isolation valve ‘B’ operation.
(shown in figure 1) is fitted and in the closed Pressure (Bar)
position.
Nominal System Design 4 7 11
3.2.4 Open all cylinder valves on the ERM. Max. Static Pressure Primary 4.6 8.2 11.5
Supply
3.2.5 Fully open the high-pressure isolation Min. Dynamic Pressure Primary 4.2 7.4 10.3
valves 1 and 2 (shown in figure 1). Supply
Max. Static Pressure ERM 4.0 7.2 10.0
3.2.6 Check connections on the headers, Min. Dynamic Pressure ERM 3.5 6.5 9.0
tailpipes, regulator and associated pipework for
leaks.
Note - Table 4 shows typical examples. These
figures may differ depending on the hospital’s
3.2.7 Fully close the right-hand high-pressure
pipeline management policy.
isolation valve 2 (figure 1 & 2).
CAUTION: It would be recommended to
3.3 Pressure Checks set the ERM line pressure at least 0.2 bar below
the main supply source pressure at full design
3.3.1 Ensure that full gas cylinder pressure is flow to ensure the emergency manifold does
shown on the cylinder contents gauges (Fitted to not supply the pipeline during normal primary
valve 1 & 2, see figure 1). source operation.

3.3.2 With Valve ‘B’ closed and valve ‘C’ open, The recommended setup of the ERM is to have the
exhaust a quick blast of gas from the sampling left hand bank open and ready to come online and
outlet, close valve ‘C’. Check that the pressure on the right hand bank closed.
the pipeline distribution pressure gauge is typically
as per table 4. Adjust as necessary. In the event of the primary system failing to
supply (Awareness of the Primary supply failure is
Note...For reducing the pressure set point, ensure typically from central alarm system) the ERM line
valve ‘B’ is closed and sampling outlet isolation regulator (see figure 1) can be manually increased
valve ‘C’ is open. Gently bleed the gas from the to match the primary supply’s nominal values, so
sampling outlet while making adjustments, as the that the full distribution pressure is restored.

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Emergency Reserve Manifold

When the ERM is in operation there is provision for continuous supply (see section 4.4 for bank cycling
an alarm output to warn when the running bank procedure).
contents is typically below half. The ERM contents
gauge should then be locally monitored. The Bank 4.4 Procedure to cycle banks &
valves can be used to cycle the left and right banks
allowing for empty cylinders to be changed while changing cylinders.
keeping continues supply to the pipeline.
4.4.1 Refer to hospitals/site policy for safe
CAUTION: The following procedures cylinder handling (See section 4.6 for typical
4.2 to 4.7 are only typical guides, where there cylinder handling safety check list) when moving
are conflicts with the hospital’s emergency the cylinders into place ready for connection to the
procedure, the hospital’s policies will take tailpipes.
precedence.
4.4.2 When the running bank pressure falls to
the pressure for changing cylinder (for typical
4.2 Procedure to prime ERM. changeover pressures see table 5). Slowly open the
standby bank isolation valve (see figure 1). With
4.2.1 The following procedure must be carried the standby bank now operating as the running
out once the commissioning (section 3) is complete bank, close the high pressure isolation valve and
and the system is ready to be put into use. cylinder valves for the empty cylinder bank.
4.2.2 Ensure the high-pressure isolation valve Table 4: Typical cylinder bank changeover
on the left-hand bank is fully open, the right-hand pressure.
bank isolation valve is closed, and all cylinder
valves on both banks are fully closed. Correct as Nominal Supply Typical Cylinder changeover
pressure
required, see section 4.7 Cylinder Operation.
4 Bar 15 Bar (50 Bar Cyl. and Below)
4.2.4 Ensure the connecting pipeline is ready for 4 Bar 20 Bar (137 Bar Cyl. and above)
use. Slowly open the line valve ‘B’ (Item 9, figure 7 Bar 30 Bar
1).
11 Bar 30 Bar

4.3 Procedure when mains sup- Note - Values in table 5 are only for reference
ply fails. as a typical guide, refer to hospital emergency
procedure policy.
4.3.1 The following steps relate to figure 1 & 2,
and detail how to operate the ERM in the event of 4.4.3 For the empty cylinder/s disconnect the
the main supply system failing to supply gas at the tailpipe from the cylinder (see figure 13) by either
correct distribution pressure. undoing the handwheel or unscrewing the nut
at the cylinder end, depending on the cylinder
4.3.2 Ensure the ERM line valve ‘B’ is open. Close connection type.
main supply line valve (Shown as valve ‘A’ in figure
2). 4.4.4 Replace the empty cylinder/s and reconnect
the tailpipes. Slowly open the cylinder valves (see
4.3.3 Ensure that one of the high-pressure section 4.7 - Cylinder operation.
bank isolation valve is fully open, the other bank
isolation valve is closed, and all cylinder valves on 4.4.5 Repeat this section each time the running
both banks are fully closed. Correct as required. bank drops to the changeover pressure until the
main supply is fully operational.
4.3.4 The pressure regulator will be set below
the nominal distribution system pressure. This 4.5 Procedure to reinstate main
should now be increased to the full distribution
pressure by increasing the line regulator setting, supply.
until the correct distribution pressure can be
obtained. 4.5.1 The following steps detail how to reinstate
the mains supply once it has been returned to
4.3.5 Once the ERM is in operation there is normal operation.
provision for an alarm output to warn when the
running bank contents is typically below half. 4.5.2 Slowly open valve ‘A’ (See figure 2).
The ERM contents gauge should then be locally
monitored for cycling the cylinder banks for 4.5.3 Complete the steps in section 3, followed by
4.2
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Emergency Reserve Manifold

4.6 Typical Cylinder Handling cylinder key or handwheel where fitted and then
turned clockwise a quarter turn.
Checklist
CAUTION: If there is any leakage of gas
CAUTION: Only persons who have had the cylinder should be removed from service and
specific training in the safety of medical gases, returned as faulty. DO NOT attempt to tighten
manual handling techniques and cylinder gland nuts etc, as this may cause damage to the
changing procedures should be allowed to valve.
change cylinders on medical gas manifolds or
medical equipment. 4.7.2 To close the valve, turn the spindle or
handwheel clockwise. Hand pressure only should
• Safety shoes should be worn at all times. When be used to close the valve.
moving larger cylinders, wear heavy protective
gloves (preferably textile or leather). Keep all
items clean and grease/oil free. 5. Maintenance Procedures

• Do not smoke or use naked lights. A competent person who is conversant with
the maintenance of high-pressure medical gas
• When handling smaller cylinders, the use of installations and any special national conditions,
protective gloves may be inconvenient. Extra which may apply, must carry out all maintenance.
care should be taken to avoid injury and to Preventative maintenance contracts are available
make sure that hands are free from oil or from BEACONMEDÆS for installations within the
grease BEFORE the cylinders are handled. U.K., overseas distributors will be able to supply
similar contracts in other areas.
• Do not knock cylinders against each other or
other solid objects. WARNING: OBTAIN A WORK PERMIT
(OR EQUIVALENT FOR OVERSEAS) BEFORE
• Do not drop or drag the cylinders. COMMENCING ANY WORK ON A MEDICAL GAS
INSTALLATION.
• Do not use cylinders as rollers or wheel
chocks. 5.1 Daily Inspection
• Do not lift any cylinder by its valve or cap 5.1.1 Check visual indicators for correct function
and damage.
• Use appropriate trolley for larger cylinders.
5.1.2 If the ERM is observed to be in operation
4.7 Cylinder Operation on its “emergency reserve” bank, replacements
for empty cylinders should be made available
CAUTION: Undue force should not be immediately.
used to open or close cylinder valves, or to attach
connectors to cylinders. 5.1.3 Check manifold pressure gauges for
abnormal conditions.
CAUTION: ALL cylinder valves should be
opened gently. TAPPING the operating key GENTLY 5.1.4 Check ERM for unusual noises or
with a soft-faced (copper) mallet is acceptable but vibrations.
undue force should not be used. If it is obvious
that injury or damage could arise from trying 5.2 Weekly
to open a sticking valve, the cylinder should be
removed from service and returned to the supplier 5.2.1 Check that all cylinders are properly
as a faulty cylinder. secured and that batch labels are correct and in
date.
CAUTION: Opening cylinder valves SLOWLY
will prevent a sudden rise in pressure in the
system. It is at this time when there will be most
5.3 Quarterly
stress on components and when most explosions
5.3.1 Ensure that:
will occur due to adiabatic compression of any oil
or grease that may be present.
(a) when the duty (primary) manifold is
running the reserve (secondary) manifold cylinders
4.7.1 The cylinder valve should be FULLY opened
are full;
(slowly, anticlockwise) using the appropriate

2005715.05 18
Emergency Reserve Manifold

(b) all system pressures are normal; Figure 15 - Manifold header Non-Return Valve
(c) all alarms are showing “green” normal Inspection.
lamps;
(d) the automatic manifold main isolating
valve is open; and
(e) the manifold is supplying the hospital.

5.3.2 Close the isolating valve on the ERM slowly Bodok Seal
and confirm that there is no effect on the line
pressure to the hospital.

5.3.3 Open all cylinder and header high-pressure Tailpipe to

cylinder
isolating valves.
connection
5.3.4 Check that the ERM safety valves are
not passing, by disconnecting their downstream
Typical Cylinder
exhaust coupling and inspecting for a gas leak and
Valve
check the condition of the seals (See figure 14).
Replace the valve or seals as necessary. Reconnect
the exhaust pipework, ensure the O-ring seals
correctly in place.

Figure 14 - Relief Valve Inspection

5.3.6 Ensure the line valve ‘B’ is closed and one
2nd stage relief valve cylinder and bank valve on 1 side of the ERM is
open (see figure 1). Open Valve ‘C’ and probe
the sampling outlet to produce a steady flow and
check the pressure on the line gauge does not dip
by more than 10%. If possible attach a flowmeter
to the sampling outlet and pipe away to a safe
location while performing this test. Close valve ‘C’
when finished.

CAUTION: For anaesthetic and oxygen

manifolds ensure that the manifold room is well
Flat face ventilated and no potential ignition sources are
connector present while running this test. Run this test
with O-ring for as short a time as possible. Oxygen can be
seal & swivel
absorbed into clothing etc., so once the test is
nut
complete it would be recommended to spend at
least 20 minutes out doors to ensure the oxygen
has released. During this time stay away from
1st stage relief valve naked flame, do not smoke etc. Do not perform
this test unless the risks can be kept within an
acceptable level.
5.3.5 Close one cylinder valve and disconnect
the tailpipe at the cylinder end (see figure 5.3.7 Check the static pressure of the regulator
15). Listen for a leak from the tailpipe. A minor (should be typically as per table 4 in section 4).
leak is permissible and likely but an obvious major Observe this pressure for typically 10-20 minutes
leak denotes failure of the manifold non-return to ensure that there is no regulator creepage.
valve (NRV). If the latter happens, do not totally Excessive creepage will necessitate replacement
detach the tailpipe but instead retighten it and test (see section 6.3) and a repeat of this test.
other tailpipes in the same way. Any failed NRV’s
can be replaced (see section 6.8) after all cylinder 5.3.8 To test the “reserve low” contact gauge,
valves have been closed and the system has been open one cylinder/header isolating valve until the
depressurised. Repeat this test when the new cylinder content gauge indicates full pressure, and
NRV’s have been fitted (See figure 15 and section then close the valve.
4.7 - Cylinder Operation).

19 2005715.05
Emergency Reserve Manifold

5.3.9 Open Valve ‘C’ and carefully bleed gas from 6.0.3 Open the sampling outlet valve ‘C’, and
the sampling outlet. probe the outlet to depressurise the system.

5.3.10 Observe the falling pressure on the contact CAUTION: When exhausting anaesthetic
gauge. and oxygen manifolds ensure that the manifold
room is well ventilated and no potential ignition
5.3.11 When the pressure falls to 14 bar for 100 sources are present.
bar scale, and 68 bar for the 315 scale gauges the
contact will provide an open signal, initiating a Note - If the cylinder contents gauges are not
“Reserve Low” alarm on the primary alarm system. rapidly dropping in pressure, stop draining the
Should this not occur replace the contact gauge system and check all cylinders are correctly
(See section 6.10). isolated.

5.3.12 Repeat steps 5.3.8 to 5.3.11 for the

opposite contact gauge. Close valve ‘C’ when
6.1 Replace line non-return valve
finished. (P/N: 2005778)
5.3.13 Finally, tighten all joints, open all cylinder 6.1.1 Complete steps in section 6.1 before
valves and perform a leak test on all joints. carrying out any component replacement on the
ERM.
5.3.18 Perform the steps in section 4.2 -
Procedure to prime ERM. 6.1.2 Slowly turn the swivel nut of the top 1”
connection. If the you hear gas escaping do not
5.3.19 The ERM is now ready for use. fully unscrew the joint until the system is fully
drained.
5.4 5 Years 6.1.3 Fully disconnect all 4 joints as shown in
figure 16 and gently remove the unit by sliding it
Replace the pressure safety valve for a new
towards you. Take care not to damage the seals.
certified relief valve, see sections 6.4 & 6.5.
6.1.4 Inspect the existing seals and replace if
5.5 As Required required, see figure 16 for seal part numbers.

Replace tailpipes, pressure safety valve, pressure 6.1.5 Taking care not to damage the O-ring seals
regulator, high-pressure isolation valve, isolation replace the new non-return valve as shown in
valves, contact gauges, non-return valve etc. as figure 16, and fasten the 4 flat face joints.
and when required (see section 6.0 to 6.10).
6.1.6 Follow steps in section 6.11 bring the ERM
back online.
6.0 Component Replacement
Procedures Figure 16 - Line Non-return Valve Replacement

WARNING: IT IS ESSENTIAL THAT ONLY

GENUINE BEACONMEDÆS SPARE PARTS ARE
FITTED DURING MAINTENANCE.

CAUTION: Ensure no contaminates, oil 1 x 1/2” flat face

or grease come into contact with any of the gas connection with swivel
connection/internals. nut and O-ring seal (Seal
3 x 1” flat face
P/N: 1823637)
connections with swivel
nut and O-ring seal
Preparation For Component Re- (Seal P/N: 2000152)
placement
6.0.1 Ensure the main gas supply system is
functioning correctly and supplying the pipeline.

6.0.2 Close the ERM line isolation valve ‘B’ (See

figure 1). Close all the cylinder and open both
bank valves (see figure 1 and 2).

2005715.05 20
Emergency Reserve Manifold

6.2 Replace Sampling Outlet (See the 2nd fix and check valve capsule.
table 6 for part numbers) Fit the new check valve, gas specific socket and
locking spring. Secure in place with the 2nd fix
Table 5 : Sampling Outlet Part Numbers spring. Ensure the spring can be compressed
GAS Type 1st Fix 2nd Fix without catching the sides of the gas specific
Oxygen (O2) 2005810 1826850 socket, adjust as required. Fit the release ring and
Nitrous Oxide (N2O) 2005811 1826851 compressing the locking springs till the roller pins
can be fitted, then release. Fit the fascia ring so
Oxygen/Nitrous Oxide (O2/ 2005812 1826852
that the clips are secured.
N2O)
Medical Air 2005813 1826853 6.2.6 After replacing the sampling outlet
Surgical Air 2005814 1826854 (entire outlet or just the 2nd fix) probe the outlet
Nitrogen (N2) 2005816 2004835 to ensure the locking mechanisms functions
correctly.
Carbon Dioxide (CO2) 2005815 2004836

6.2.7 Open valve ‘C’ and check for leaks. If leaks

6.2.1 The Sampling outlet can be worked on
are found, before attempting to rectify close valve
without taking the ERM off line.
‘C’ and probe the outlet to depressurise. Repair
the leak and repeat steps in 6.2 as required.
6.2.2 Ensure the sampling outlet isolation valve
‘C’ is closed (as shown in figure 17).
6.2.8 Close valve ‘C’ when replacement
complete.
Figure 17 - Sampling Outlet Replacement

6.3 Replace 2nd stage regulator

Isolation Valve ‘C’
(Shown in closed position) (See table 7 for part numbers)
1 x 1/2” flat face connection
Table 6: 2nd Stage Regulator Part Numbers
with swivel nut and O-ring seal
(Seal P/N: 1823637) Regulator Nominal Pressure Part Number

1st fix fastener 4 Bar 2005689

7 Bar 2005690
Check Valve
11 Bar 2005691
Gas specific

Release ring
6.3.1 Complete steps in section 6.1 before
carrying out any component replacement on the
ERM.
2nd fix
fastener 6.3.2 Slowly turn the swivel nut of the top 1”
connection. If the you hear gas escaping do not
Fascia ring clips Roller Pins Locking spring fully unscrew the joint until the system is fully
drained.
6.2.3 Probe the outlet to depressurise. Figure 18 - 2nd Stage Regulator Replacement

6.2.4 To replace the whole outlet, disconnect

the 1/2” connection and remove the 2 x M4 cap
head set screws. Ensure the replacement unit is
the correct gas type. Replace the new outlet by
connection the 1/2” connection ensure the O-ring
Locking Nut
is in place (Replace if damaged, see figure 17 for 2nd Stage
part number. Secure the unit with the M4 cap Regulator
head and washers.

6.2.5 For replacing the 2nd fix only (see figure 2 off 1/2” BSP
x 1” Flat face
17). Press the fascia ring clips shown and slide
connector with
it from the release ring. Press the release ring, O-ring (2000152)
compressing the locking spring until the roller pips and bonded seal
fall out. Remove the 2nd fix fasteners and slide of (1825637)

21 2005715.05
Emergency Reserve Manifold

6.3.3 Fully disconnect the two 1” joints as shown 6.4.4 Remove the relief valve and blanking plugs
in figure 18 and gently remove the unit by sliding form the old regulator and fit to the new unit.
it towards you. Take care not to damage the seals.
6.4.5 Inspect the existing seals and replace if
6.3.4 Remove the two 1/2” BSP x 1” flat face required, see figure 19 for seal part numbers.
connectors and fit to the new regulator
6.3.6 Taking care not to damage the O-ring seals
6.3.5 Inspect the existing seals and replace if replace the new regulator as shown in figure 19,
required, see figure 18 for seal part numbers. and fasten the 2 flat face joints.

6.3.6 Taking care not to damage the O-ring seals 6.3.7 Follow steps in section 6.11 bring the ERM
replace the new regulator as shown in figure 18, back online.
and fasten the 2 flat face joints.

6.3.7 Follow steps in section 6.11 bring the ERM

6.5 Replace 2nd stage relief valve
back online. (See table 8 for part numbers)
Table 7: 2nd Stage Relief Valve Part Numbers
6.4 Replace 1st stage regulator
Nominal Line Relief Set Part
6.4.1 Complete steps in section 6.1 before Pressure Pressure Number
carrying out any component replacement on the 4 Bar 5.3 bar 2000122
ERM. 7 Bar 11 bar 2000123
11 Bar 13 bar 2000140
6.4.2 Slowly turn the swivel nut of the top 1”
connection. If the you hear gas escaping do not 6.5.1 Complete steps in section 6.1 before
fully unscrew the joint until the system is fully carrying out any component replacement on the
drained. ERM.
6.4.3 Fully disconnect the 3 joints as shown in 6.5.2 Slowly turn the left hand 1” swivel nut
figure 19 and gently remove the unit by sliding it connection. If the you hear gas escaping do not
towards you. Take care not to damage the seals. fully unscrew the joint until the system is fully
drained.
Figure 19 - 1st Stage Regulator Replacement
6.4.3 Fully disconnect the two 1” joints as shown
1” flat face connection 3/4” flat face connection in figure 20 and gently remove the unit by sliding it
with swivel nut and with swivel nut and towards you. Take care not to damage the seals.
O-ring seal (2000152) O-ring seal (2000179)
6.4.4 Inspect the existing seals and replace if
required, see figure 20 for seal part numbers.
Remove the 1/8 blanking blug from the old relief
valve and fit to the new unit.

Figure 20 - 2nd Stage Relief Valve Replacement

2 x 1” flat face
connections with swivel
nut and O-ring seal
(2000152)

1st Stage Regulator 5/8” flat face connection with swivel

nut and O-ring seal (1822236)
Bonded seal part numbers, 1/4” (2004808), 3/8” (1824977) 1/8” blanking plug and seal 2nd Stage Safety Relief Valve

2005715.05 22
Emergency Reserve Manifold

6.5.5 Taking care not to damage the O-ring seals 6.7 Replace High Pressure Bank
replace the new relief valve as shown in figure 20,
and fasten the 2 flat face joints.
Valve (P/N: 2005820)
6.7.1 Complete steps in section 6.1 before
6.5.7 Follow steps in section 6.11 bring the ERM
carrying out any component replacement on the
back online.
ERM.

6.6 Replace 1st stage relief valve 6.7.2 Slowly turn 1 of the 5/8” swivel nut
(P/N: 2005384) connections. If the you hear gas escaping do not
fully unscrew the joint until the system is fully
6.6.1 Complete steps in section 6.1 before drained.
carrying out any component replacement on the
ERM. 6.7.3 Fully disconnect the two 2 joints as shown
in figure 22 and gently remove the unit by sliding it
6.6.2 Disconnect the 3/4” and 1” swivel nut towards you. Take care not to damage the seals.
connection on the exhaust line to ensure adequate
space for removing the valve without spraining the Figure 22 - Cylinder Bank Valve Replacement
pipe work (as shown in figure 21).
Contact Gauge
6.6.3 Start to unscrew the 1st stage relief valve,
Sealing washer (2005765/7)
if you hear gas escaping do not fully remove until
the system is fully drained.

6.6.4 Inspect the existing seals and replace if

required, see figure 21 for seal part numbers.

6.6.5 Taking care not to damage the O-ring seals

replace the new relief valve as shown in figure 21,
and fasten the 2 exhaust pipe flat face joints.
High
Pressure
6.6.6 Follow steps in section 6.11 bring the ERM Isolation
back online. Valve 2 x 1/4” x 5/8” flat face
connections
Figure 21 - 1st Stage Relief Valve Replacement 1/4” blanking plug O-ring seal (1822236)
Bonded Seal (2004808) Bonded seal (2004808)
1” flat face connections with
swivel nut and O-ring seal
6.7.4 Remove the two 1/4” x 5/8” BSP fittings,
blanking plug and contact gauge from the
old valve. Take note of the direction label on
the underside of the base of the valve, fit the
connectors and gauge as per the old valve unit.
Inspect the existing seals and replace if required,
see figure 22 for seal part numbers.

6.7.5 Taking care not to damage the O-ring seals

replace the new valve as shown in figure 22, and
fasten the 2 flat face joints.

6.7.6 Fully open the valve unit and stick the label
onto the handle so the “BeaconMedæs” logo is
horizontal

1st Stage Safety Relief Valve 3/4” flat face connections 6.7.8 Follow steps in section 6.11 bring the ERM
Bonded seal (1824977) with swivel nut and back online.
O-ring seal (2000179) O-ring seal

23 2005715.05
Emergency Reserve Manifold

6.8 Replace Cylinder Header 6.9 Replace Line Pressure Gauge

Non-return Valves (see table 10 for part numbers)
(see table 9 for part numbers) Table 9: Line Pressure Gauge Part Numbers
Table 8: Header Non-return Valve Part Nominal Line Pressure Part Number
Numbers 4 Bar 2005765
GAS Type Part Numbers 7 Bar 2005766
Oxygen (O2) 2000288 11 Bar 2005767
Nitrous Oxide (N2O) 2000289
Oxygen/Nitrous Oxide (O2/N2O) 2000290
CAUTION: Ensure the new gauge has the
same scale as the one being replaced.
Medical Air 2000291
Nitrogen (N2) 2000292 6.9.1 Complete steps in section 6.1 before
Carbon Dioxide (CO2) 2005850 carrying out any component replacement on the
ERM.
6.8.1 Complete steps in section 6.1 before
carrying out any component replacement on the 6.9.2 Start to unscrew the line pressure gauge,
ERM. if you hear gas escaping do not fully remove until
the system is fully drained.
6.8.2 Slowly turn the swivel nut of the tailpipe
connection. If the you hear gas escaping do not 6.9.3 Replace the old seals with those supplied
fully unscrew the joint until the system is fully with the new gauge.
drained.
6.9.4 Fit the new gauge as per the old unit.
6.8.3 Fully disconnect the tailpipe joints as
shown in figure 23. Start to unscrew the non- 6.9.5 Follow steps in section 6.11 bring the ERM
return valve, if the you hear gas escaping do not back online.
fully unscrew the joint until the system is fully
drained. Fully disconnect the non-return valve. Figure 24 - Line Pressure Gauge Replacement
Line Pressure Gauge complete with
Figure 23 - Cylinder Header Non-return Valve compression washer (2005896)
Replacement
Tailpipe
Connection

Non-Return Valve
O-ring (2000239)

6.10 Replace Cylinder Contents

contact Gauge (Se table 11 for part
numbers.
6.8.4 Inspect the existing seals and replace if
required, see figure 23 for seal part numbers. Table 10: Content Pressure Gauge Part
Numbers
6.8.5 Reconnect the tailpipe to the non-return
valve. Switch point Part Number
14 Bar (100 Bar Scale) 2005772
6.8.6 Follow steps in section 6.11 bring the ERM 68 Bar (315 Bar Scale) 2005773
back online.

2005715.05 24
Emergency Reserve Manifold

Figure 25 - Reserve Low Contact Gauge Alarm

Note - 14 bar switch point typically used on N2O Wiring
and CO2. 68 bar switch point typically used for O2,
O2/N2O, Medical Air, Surgical Air and N2O. To primary supplies
“Reserve Low” alarm input
CAUTION: Ensure the new gauge has the 5 6
same scale and alarm contact as the one being
replaced.

6.10.1 Complete steps in section 6.1 before Left bank

carrying out any component replacement on the contact gauge
ERM. 1 1 5 6

6.10.2 Disconnect the contact alarm wire, see 2 3 2 4

figure 25.

6.10.3 Start to unscrew the line pressure gauge,

if you hear gas escaping do not fully remove until
the system is fully drained. If required disconnect
the high pressure bank valve to gain access to Right bank
3 4

the contact gauge (see section 6.7 - Replace High contact gauge
Pressure Bank Valve, for procedure).

6.10.4 Replace the old seals with those supplied

with the new gauge.

6.10.5 Fit the new gauge as per the old unit

including wiring as per figure 25.

6.10.6 Follow steps in section 6.11 bring the ERM

back online.

6.11 Returning the ERM Back on-

line
6.11.1 After completing any repair work
on the ERM complete the step in section
3 - Commissioning, followed by section 4.2 -
Procedure to prime ERM.

Note - The panel may need to be purged as per

HTM 02-01 for UK installations, or as per relevant
standards if installed outside the UK.

25 2005715.05
Emergency Reserve Manifold

7. Recommended Spares and Part

Description
Accessories Number
2005887 5 Year Overhaul Kit Oxygen
2005888 5 Year Overhaul Kit Nitrous Oxide
7.1 Spares scheduling 5 Year Overhaul Kit Oxygen/Nitrous
2005889
Oxide
The following table is the recommended spares
2005890 5 Year Overhaul Kit Medical Air
holding, the number recommended spares for
overseas customers are expressed in brackets and 2005891 5 Year Overhaul Kit Surgical Air 7 bar
take into account expected transport delays (see 2005892 5 Year Overhaul Kit Surgical Air 11 bar
table 11). 2005893 5 Year Overhaul Kit Nitrogen 7 bar
Table 11a: Accessories 2005894 5 Year Overhaul Kit Nitrogen 11 bar

Part Number Description 2005895 5 Year Overhaul Kit Carbon Dioxide

Modular Header Rack Assembly (x1)LH-RH Note - It is mandatory to replace 1st and 2nd stage
8102370396
- O2
relief valves every 5 years.
Modular Header Rack Assembly (x1)LH-RH
8102370425
- N2O
To accompany the replacement of relief valves
Modular Header Rack Assembly (x1)LH-RH - an overhaul kit has been defined to include non
8102370437
O2/N2O
return valves (header and main line), associated
Modular Header Rack Assembly (x1)LH-RH seals/washers and outlet capsule along with the
8102370449
- MA
1st and 2nd stage relief valves.
Modular Header Rack Assembly (x1)LH-RH
8102370461
-N
BeaconMedæs advise to replace these additional
Modular Header Rack Assembly (x1)LH-RH components when the ERM is shut down for it’s
8102370473
- CO2
major relief valve service.
Modular Header Rack Assembly (x2)LH-RH
8102370398
- O2
Note the kits are sized for the standard 2x1
Modular Header Rack Assembly (x2)LH-RH
8102370427 ERM. For systems larger than this additional NRV
- N2O
capsules and tailpipe seals are required for each
Modular Header Rack Assembly (x2)LH-RH -
8102370439 cylinder/tailpipe connection. See table 12 for
O2/N2O
details.
Modular Header Rack Assembly (x2)LH-RH
8102370451
- MA
Note - industrial regulators are recommended
Modular Header Rack Assembly (x2)LH-RH
8102370463
-N
to be replaced every 5 years. Whilst the medical
standards do not specifically identify the need
Modular Header Rack Assembly (x2)LH-RH
8102370475
- CO2
to replace the regulators within this time scale it
should be considered good practice to do so. By
replacing the regulators whilst the relief valves
Customised arrangements are being replaced interruption of supply is
minimised.
For a custom arrangement where independent
assemblies are required, accessories like the loop BeaconMedæs therefore advise that regulators
connection, corner connection and free standing are also replaced during the 5 year overhaul of the
configuration are available, more information could ERM control panel.
be found on the latest Manifold Header System
installation manual.

2005715.05 26
Emergency Reserve Manifold

Table 11b: Spares scheduling

Quan- Quan-
Part tity req./ Part tity req./
Item Number of Item
Num- ERM Description Num- ERM Description Number of
ID Panels ID
ber ber Panels
<5 >5 <5 >5
Contact Gauge – 0-315 1826850 Gem 10 2nd fix - Oxygen
2005773 1(2) 2(2) 1(1) 1(2)
bar/68 bar Falling (O2)
1
Contact Gauge – 0-100 1826851 Gem 10 2nd fix - Nitrous
2005772 1(2) 2(2) 1(1) 1(2)
bar/14 bar Falling Oxide (N2O)
2 2005383 1st Stage Regulator 1(2) 2(2) 1826852 Gem 10 2nd fix - Oxygen/
1(1) 1(2)
3 2005820 HP Valve Assembly 1(2) 2(2) Nitrous Oxide (O2/N2O)

1st stage relief valve - 20 1826853 Gem 10 2nd fix - Medical

4 2005384 1(2) 2(2) 20 1(1) 1(2)
bar Air

Line Regulator – 4.6 bar 1826854 Gem 10 2nd fix - Surgical

2005689 1(2) 2(2) 1(1) 1(2)
Outlet Air

Line Regulator – 8.6 bar 2004835 Gem 10 2nd fix - Nitrogen

5 2005690 1(2) 2(2) 1(1) 1(2)
Outlet (N2)

Line Regulator – 11 bar 2004836 Gem 10 2nd fix - Carbon

2005691 1(2) 2(2) 1(1) 1(2)
Outlet Dioxide (CO2)

2005765 Line Gauge – 6 bar 1(1) 1(2) 2005692 Copper Sealing Washer -
21 2(4) 4(6)
Gauge
6 2005766 Line Gauge – 10 bar 1(1) 1(2)
22 2000239 ‘O’ Ring - NRV capsule 2(4) 4(6)
2005767 Line Gauge – 16 bar 1(1) 1(2)
Manifold block c/w Non-
7 2005778 1(1) 1(2)
Return Valve
2000122 Relief Valve – 5.3 bar 2(2) 3(4)
8 2000123 Relief Valve – 11 bar 2(2) 3(4)
2000140 Relief Valve – 13 bar 2(2) 3(4)
9 1823637 ‘O’ Ring – 12.1 I/D x 1.6 CSA 2(4) 2(4)
7
16
10 1822236 ‘O’ Ring – 15.1 I/D x 1.6 CSA 2(4) 2(4) 8
11 2000179 ‘O’ Ring – 17.1 I/D x 1.6 CSA 2(4) 2(4)
12 2000152 ’O’ Ring – 22.1 I/D x 1.6 CSA 2(4) 2(4)
13 2004808 1/4” Bonded Seal 2(4) 2(4) 6
14 1824977 3/8” Bonded Seal 2(4) 2(4)
18
15 1825637 1/2” Bonded Seal 2(4) 2(4) 9 5

16 2005820 Line Valve Assembly 1(2) 2(2)

Header Non-Return Valve 1(2) per 4
2000288
Kit, O2 Cylinder 20
11
Header Non-Return Valve 1(2) per
2000289
Kit, N2O Cylinder
12 2

2000290
Header Non-Return Valve 1(2) per 15 19
Kit, O2/N2O Cylinder
17 17 1
Header Non-Return Valve 1(2) per
2000291
Kit, AIR Cylinder 21
Header Non-Return Valve 1(2) per
2000292
Kit, N2 Cylinder
Header Non-Return Valve 1(2) per
2005625
Kit, CO2 Cylinder
18 2000172 Test Point Isolation Valve 1(2) 2(2)
22 13 10 3
19 2005775 Alarm Terminal Box 1(1) 1(1) 14

27 2005715.05
 Tel: +44 (0) 1246 474242
www.beaconmedaes.com

Atlas Copco Airpower n.v.

Boomsesteenweg 957
2610 Wilrijk - Belgium

Atlas Copco Ltd. trading as Atlas Copco Medical

Unit 18 Nuffield Way, Abingdon, Oxfordshire, UK OX14 1RL 0088