HR Blowers Uk LTD: Installation & Operating Manual
HR Blowers Uk LTD: Installation & Operating Manual
HR Blowers Uk LTD: Installation & Operating Manual
2. LIFTING
a. Every blower is supplied with lifting lugs which should only be used
when lifting the bare shaft blower. This allows the blower to be lifted
without distortion.
b. If the blower is mounted on a baseplate, the blower lifting lugs must
NOT be used as the increased strain from the extra weight of the
baseplate may distort the blower casing and this is very likely to cause
the impellers to touch each other or the casing, with catastrophic
consequences when in operation. Either special lifting points should be
fitted to the baseplate designed to enable it to be lifted without
distortion, or it should be lifted by placing 2 equal slings, 1 under each
end of the baseplate, lifting very carefully to avoid distortion.
4. INSTALLATION
5. DRIVE ALIGNMENT
a. Once the blower has been installed and bolted down onto its
foundation, the piping can be connected. It is important that the
pipework is installed such that the pipe flanges connect freely to the
blower without any strain as this can cause distortion to the blower with
catastrophic results. Also, the pipework must be clean internally and
free from any dirt.
b. Normally, the blower is fitted with a combined Inlet Filter/Silencer and
an Exhaust Silencer, and all should be mounted as close as possible to
the appropriate flange on the blower. As for the piping, the Inlet and
Outlet Filters/Silencers must be installed without in any way putting
strain on the blower or the piping connected to the blower.
c. Ensure no dirt or objects penetrate internally within the system whilst
installing and connecting up the flanges.
d. When the blower has been installed and the pipework and
filters/silencers have been fitted, the blower must be checked again
manually that it rotates freely without tight spots or contact of moving
parts. Any problems in this respect must be investigated and remedied
immediately.
e. Note; An Exhauster must be fitted with a Discharge Silencer.
7. LUBRICATION
8. PROTECTION DEVICES
a. Before starting the blower for the first time, and also after it has been
shut down for maintenance, the following initial checks should be
made.
i. Check that the unit is isolated from the electrical supply.
ii. The blower and piping must be free internally from any dirt or
objects.
iii. The blower must be securely mounted on the
foundation/mounting bolts and they should be checked that they
are properly and evenly tightened.
iv. The blower must be level and correctly aligned to the driving
motor. If it is direct coupled, check that the coupling bolts are
correctly tightened. For a vee belt drive, the units must be
correctly aligned and the vee belts tensioned in accordance with
the manufacturers recommendations.
v. The oil levels must be checked in accordance with
7. LUBRICATION above.
vi. Check manually that the bower rotates freely and that there are
no tight spots. If there are this must be investigated and rectified
before proceeding further.
vii. It is recommended that when the electricity is connected a check
is made that power is also connected to all the appropriate
safety and protection equipment.
a. Check that the interior of the blower and the inlet and discharge piping
is clean and that there has been no ingress of dirt or anything else.
b. The oil levels must be checked and topped up if necessary. DO NOT
OVER FILL. The drive end bearing grease nipples should be greased
until the grease escapes from the grease release points.
c. Check that the blower is level and correctly aligned with the drive.
Ensure all the holding down bolts are firmly tightened. If a Vee belt
drive arrangement is fitted, check that the belts are correctly tensioned.
Also ensure that the inlet and outlet piping are correctly positioned
such that they are not putting any load on the blower that could cause
distortion of the blower casing.
d. Manually rotate the impellers to check they rotate freely.
e. If all the above are satisfactory, connect the electrical supply to the
drive motor and protection equipment.
f. Use the motor to briefly turn over the blower to check that the blower is
rotating in the correct direction. If it is not, reverse the electric leads
and check again.
g. Once all the above checks have been carried out satisfactorily, start
the blower and run for 15 minutes on no load. During this time check
that the blower casing and bearing housings are not overheating.
Under these conditions and over this period of time, heat should not be
generated.
h. If the above test is satisfactory, increase the load gradually to full load
over a period of 30 minutes and then run it at full load for another hour.
The blower must be monitored constantly throughout this period. If
there is any sign of overheating or any other problem occurs, the
blower must be shut down immediately and the fault diagnosed and
rectified, otherwise serious damage could result.
i. The blower should be regularly monitored for the first 2 days of
operation.
a. Once in operation the oil level should be checked at least weekly, and
the drive end bearings should also be greased at the same time.
It is very important for safety reasons and for the blower, that when
checking the oil level, the blower must be stopped for at least 15
minutes before checking the level to allow the oil to settle to its proper
level. If the blower needs topping up the blower MUST be isolated from
the electrical supply.
b. The frequency of oil change will depend on several factors such as the
number of hours in operation, changes in the climatic conditions and
the load factor. Normally one would expect to change the oil annually
unless the blower is subject to long periods of very heavy continuous
load, in which case more frequent oil changes are recommended, such
as 3 or 6 monthly or if the climatic conditions are such that the
temperature change between summer and winter means that a
different grade of oil should be used. See 7. LUBRICATION.
c. For a belt drive installation, whilst checking the oil level, the belt tension
should be checked and adjusted if necessary.
d. It is important that the Inlet Filter element is cleaned regularly as if it
becomes blocked and restricts the air flow to the blower, the blower
could over heat. Cleaning should be undertaken in accordance with the
Instructions supplied by the manufacturer of the filter.
Excessive 5. Blower Speed too high Check speed and compare with Performance Chart
Power
6. Pressure too high See 2 and 3 above
7. Unbalanced or rubbing Inspect outer case for hotspots. Check drive alignment
Impellers Coupling and V-belt
Excessive 9. Incorrect or inadequate Confirm correct oil specification and restore correct
Heating lubrication lubrication levels in Gear case
15. Worn Bearings & Gears Replace bearings and gears. Contact HR Blowers UK
Ltd
16. Loose motor, blower or Check and re-tighten bolts where loose
pipework
Driveshaft 20. Excessive overhanging Change or repair unit. Check pulley dimensions. Re-
Breakage load align and tension. Change drive configuration.
If any oil from one of the major companies cannot be acquired, the oil and grease specification given below
should be adhered to. Any reputable oil company should be able to supply a satisfactory oil based on these
specifications.
Oil Specification
The oil used should be a straight mineral oil (Anti-wear, anti-rust, anti-foam and anti-oxydent additions are
allowed but EP and any additives which emulsify are not allowed).
The oil should have a viscosity of not more than 2500 centistokes at the minimum ambient temperature (cold
starting) and not less than 30 centistokes for the highest oil temperature reached on maximum load. When
there are large seasonal variations in ambient temperature summer and winter grades will be required.
Grease Specification
A high quality No3 National Lubricating Grease, Institute mineral oil grease with a calcium complex or lithium
base should be used.
NOTE! HR BLOWERS UK LTD CANNOT ACEPT RESPONSIBILITY FOR ANY FAILURE CAUSED THROUGH
LUBICATION NOT CONFIRMING TO THE SPECIFICATION
Follow filling instructions in the installation and operating manual to obtain the correct oil level
For Guidance Only
HRBV Vehicle Blowers Oil/Oil 1.80 litres * 0.60 litres vertical flow
0.30 litres horizontal flow
* Due to differences in oil quantity for vertical and horizontal mounting these figures are only a guide
! Max figures are for oil quantity with machine arranged for vertical flow
# Min figures are for oil quantity with machine arranged for horizontal flow
Handing for HR Blowers Size 1 – 4
Please note:- If the blower is to be used with a non-standard handing (refer to the handing
chart) the Grease Release Point should always be below the shaft axis. The covers can be
rotated to a suitable position by removing the four retaining bolts. Great care must be taken
to ensure that the shims are retained and are not fouled, as the blower will not rotate
without them.
Grease Nipples
Grease Release Point
HR Oil – Grease Type Horizontal Flow
1. Drain Plug
2. Level Plug – Sight Glass
3. Fill Plug
4. Breather Plug, Top Port