Sweco Primax Trailer Manual 18-04
Sweco Primax Trailer Manual 18-04
Sweco Primax Trailer Manual 18-04
Trailer-mounted
User Manual
Contents
Preface ................................................................................................................................................................... 7
We have reedited our manual for PRIMAX FWD/HWD/SHWD. We are still working on the manual and any good
ideas you may have to improve our manual are most welcome.
The English version of the PRIMAX FWD user manual is the only authorised manual. Any other
translations of this manual are not valid and Sweco Danmark A/S cannot be held responsible for the
contents of such manuals.
Preface
This manual has been written to be the best of our knowledge and is intended to introduce
users to proper use and maintenance of this equipment and we recommend to read the
manual and the safety sections and condition of use before taking this equipment into use
and to follow the training courses which are always offered in connection with delivery of our
equipment.
We believe this manual to be correct at the time of publishing. Still Sweco exclude all liability
for loss (whether arising under contract, tort, statute, or otherwise, to the extent lawful,
arising from the contents of the manual or from its use.
Although Sweco is aware of its liabilities and always will comply with such provisions, we
expect people to apply their own skill and judgement when using the information contained in
the manual and when using the equipment.
I. Condition of use
Intellectual Property:
Software described in this manual is the property of Sweco Danmark A/S, Pavement
Consultants (hereinafter called Sweco). The software is protected by copyright laws and
international copyright and other intellectual property laws and treaties. The software and all
information embodied in the software is confidential.
Disclaimer:
Sweco disclaims any express or implied warranties of merchantability, title or fitness for a
particular purpose. Distribution of any of Sweco’s software is forbidden without to express
written consent of Sweco. Furthermore, Sweco reserves the right to discontinue distribution
of any Sweco software.
Warranty:
Sweco shall determine whether or not any defective item shall be repaired or replaced, within
the warranty period and in accordance with the issued warranty certificate.
Software upgrades do not extend or modify the warranty on the equipment already provided.
1. The software will perform in accordance with the written materials for a period of 12
months from date of the warranty certificate
2. Hardware will be free from defects in material and workmanship for a period of 12 months
from date of the warranty certificate provided that service and maintenance is performed
in accordance with the user instructions and under normal use.
Customer remedies:
Sweco’s liability under contract, tort, equity, breach of statutory duty or any other law,
regulation or rule and your exclusive remedy in respect of any rights accrued to you and your
successors in title and permitted assigns against Sweco, its employees pursuant of any of
the foregoing arising from your use of the equipment and software shall be repair or
replacement of the software or hardware that does not meet Sweco’s limited warranty (as
described above) and which is returned to Sweco with your purchase documents within the
warranty period.
No other warranties:
Sweco disclaims to the extent permitted by law, all other warranties, either express or
implied, including but not limited to warranties of merchantability and fitness for a particular
purpose, with respect to the product, the accompanying written materials or the accessories
supplied.
Part 0: Safety
Read this section before using the equipment. This section contains recommendations and
practices which should be observed to ensure safe installation, operation and maintenance
(hereinafter referred to as “use”) of the equipment described in this manual.
You will find additional safety information such as task-specific safety alert messages
appearing as appropriate throughout the manual.
WARNING: Failure to follow the safety messages, recommendations, and hazard avoidance
procedures in this manual can result in personal injury, including death or damage to
equipment or property.
Below safety alert symbols and signal words are used throughout the manual to alert the
reader to personal safety hazards or to identify conditions that may result in damage to
equipment or property. Comply with all safety information in this manual and the safety
information that follows the signal word.
Warning: Indicates a potentially hazardous situation that can result in serious personal
injury, including death if not avoided.
Caution: Indicates a potentially hazardous situation that can result in minor or moderate
personal injury, if not avoided.
Caution: Emergency button which is placed on FWD trailer frame and on side of cabinet
with hydraulic system
Caution: Used without the safety alert symbol: Indicates a potentially hazardous situation
that can result in damage to equipment or property, if not avoided.
Warning: Indicates a potentially hazardous situation that can result in serious personal
injury.
Equipment owners are responsible for managing safety information, insuring that all
instructions and regulatory requirements for use of the equipment are met, and for qualifying
all potential users.
Research and evaluate safety information from all applicable sources, including owner-
specific safety policy, best industry practices, governing regulations, and this manual.
Maintain safety information, including the safety labels affixed to the equipment, in readable
condition.
Ensure that the equipment is used in accordance with the instructions and information
provided in this manual, governing codes and regulations, and best industry practices.
If applicable, receive approval from you facility’s engineering or safety department, or other
similar function within your organization, before installing or operating the equipment for the
first time.
Re-evaluate safety practices and procedures whenever changes are made to the process or
equipment.
• Receive safety training appropriate to their function and in accordance with governing
regulations and best industry practices.
• Are familiar with the equipment owner’s safety and accident prevention policies and
procedures
• Receive equipment- and task-specific training from another qualified individual.
• Possess industry- and trade-specific skills and a level of experience appropriate to their
job functions
• Are physically capable of performing their job function and are not under the influence of
any substance that degrades their mental capacity or physical capabilities.
NOTE: Sweco can provide equipment-specific installation, operation and maintenance training.
Contact your Sweco representative or Sweco directly for more information.
The safety practices apply to the use of the equipment in the way described in the present
document. The information represents the best safety practices for equipment of similar
hazard potential used in similar industries and is not meant to include all possible safety
practices.
• Use the equipment only for the purposes described and within the limits specified in this
manual.
• Do not use unapproved auxiliary devices. Contact your Sweco representative if you have
questions on the use of non-standard auxiliary devices.
• Read and follow the instructions of this manual and other referenced documents.
• Familiarise yourself with the location and meaning of the safety warning labels and tags
affixed to the equipment, and appearing from the control software and data collection
software. Refer to Safety Labels and Tags (if available) at the end of this part.
• If you are unsure of how to use the equipment, please contact your Sweco representative
or Sweco directly for assistance.
• Install the equipment in accordance with the instructions provided in this manual and in
the documentation provided with auxiliary devices.
• If the required installation configuration does not match the installation instructions,
please contact your Sweco representative.
• Trailer hitch – ball must match coupler to ensure correct towing of equipment and prevent
that the trailer is disconnected from towing vehicle while driving.
• Loading of towing vehicle – do not stow too much cargo in rear of car. This will tilt trailer
frame and course unstable driving on the road.
• Do not pass communicable through a back door. This may damage the cable.
• Too low voltage may cause overheating and breakdown of FWD unit
• Park/alarm override plug, do not use this in the field, only for servicing purposes
• Maximum temperature limit for computer is typically 40oC if placed in shade. Storage
temperature is -40oC to +65oC. Remove computer from vehicle after use to protect it from
high humidity and large temperature shifts from day to night.
• Warning signs on trailer: check local requirements with regard to warning signs on FWD
trailer. Consult authorities if required.
• Familiarise yourself with the location and operation of all safety devices and indicators.
• Make sure that the equipment, including safety devices, is in good working order.
• Do not use equipment that is malfunctioning or shows signs of potential malfunction.
• Perform scheduled maintenance and calibration activities at the intervals described in this
manual.
• Use only new or factory-authorised refurbished replacement parts.
• Read and comply with the manufacturer’s instructions and any MSDS supplied with the
equipment.
• Check that all safety devices are operating correctly prior to using the equipment.
• Keep equipment safety warning labels clean and replace any worn or damaged labels.
Below you find some important safety precautions which must be observed when operating
the Falling Weight deflectometer for your own safety and for the safety of others. Always
keep in mind that a Falling Weight deflectometer can cause injury to persons in case of
malfunction, wrong handling or mistreatment. All safety warnings in this manual must be
observed.
Freight handling:
• When pulling the FWD trailer with a vehicle; make sure that hitch ball match coupler
• Do not carry too much cargo in towing vehicle; may cause the trailer frame to tilt and
results in unstable driving on the roads
• Warning lights and placing to comply with local legislation and regulations
• Do not start driving with foot down – emergency switch will send an alarm to driver
• When transporting FWD trailer by sea or air: make sure no fork lifts or cranes are used
for handling the equipment and disconnect and protect batteries from short circuit.
Part 1: Introduction
1.1 Sweco Denmark Pavement Consultants
Behind the PRIMAX falling weight deflectometers are more than 75 years of experience in
road construction and road maintenance.
In 1968, Sweco Danmark Pavement Consultants began developing and manufacturing falling
weight deflectometers (FWD). The latest model is PRIMAX, a precise and very effective
FWD, and a combination of several years of experience and customer requirements.
PRIMAX is modular in design and can be upgraded within the load ranges 7-150 kN, 7-250
kN or 7-350 kN for use on road and airfield pavements the latter especially for runways,
taxiways, aprons, etc. that must be capable of withstanding Boeing 747, Airbus380 and other
large aircrafts.
The module principle means that there is no need to invest in new FWD equipment. Instead,
all that is necessary is to add more geophones, time history, larger load cells, more weights.
The trailer-mounted equipment can also be built into a van, without having to invest in new
basic measuring equipment. PRIMAX offers infinite possibilities.
1.1.1 CE marking
The PRIMAX FWD test system carries a CE mark in accordance with the EU Machine and
EMC Directives. The falling weight deflectometer thus fully complies with the safety
requirements laid down for work with measuring equipment. We refer to the appendix for CE
certificate.
Road bearing capacity measurements can be carried out with several kinds of equipment,
one of these being a Falling Weight Deflectometer (FWD). The FWD is the most commonly
used equipment for this kind of measurements.
When analysing and calculating the data collected with the FWD, it is possible to find
answers to various questions occurring when maintaining road networks e.g.:
• Dynamic E moduli
• Residual life
• Critical layers
• Reinforcement needs
A set of weights is dropped onto a platform with springs (rubber buffers) and the impact load
is transferred to the pavement through a Load plate.
Normally, the load applied on road pavements is 10-65 kN and on airfield pavements 65-350
kN.
When subjected to a load, the pavement will bend and a deflection basin is created. The
deflections at various distances from the loading centre are recorded by the sensors
(geophones) and stored in a data file.
The geophones are set at distances, which have been calculated to cover various kinds of
pavement structures that are normally measured with FWD.
A measuring cycle normally consists of 3 drops. One set drop and two measuring drops.
The set drop adjusts the FWD. The two other drops are measuring drops. The latter are
compared with each other and the maximum allowable reference values in the data
collection software. If the difference is larger than the set allowable difference, a new
measurement should be made. This cycle consists of two drops and if the measured result is
accepted then the result is stored, and the operator may go on to the next measuring point.
Load Characteristics
Load range 7-150 kN (7-250 kN, 7-350 kN)
Load pulse duration 25-30 ms
Load pulse shape essentially half-sine
Load pulse rise time approx. 10-15 ms
Load Cell
Load cell accuracy 2% +/- 0.2 kN
Load resolution 0.01 kN (0.01 KPa)
Load plate 4-split, 300 mm in diameter
Deflector Sensor
Sensor type Seismic Velocity Transducer
Number of geophones 1-18 (optimum)
Geophone accuracy better than +/- 2%
Geophone resolution 0.1 micron
Geophone range 2200 micron
Geophone beam 2500 mm from centre
Temperature Sensor
Sensor type PT 100
Number of sensors 1 manual – optional 3
(surface, air, manual)
Temperature accuracy better than 1C
Temperature resolution 0.1 C
• Paint/point marker
• Rear deflection extension beam (rear 600 mm & transverse 450 mm)
• Stacking tower tester (relative calibration procedure for geophones)
• 450mm load plate (optional rigid or 4 split)
• Video camera & monitor
• Warning light (trailer and car)
• National language versions (may require national MS Windows version)
• Calibration reference package (geophones) ready for operation: hardware &
software
• Upgrade to heavy weight deflectometer (250 kN) or super HWD (350 kN)
• New: PRIMAX Wireless connection (PC ↔ FWD unit)
• New: PRIMAX Pavement Road Image System
• New: PRIMAX Data Collection Software
• PRIMAX extended warranty
• 12/24Volt unit powered by the towing vehicle, portable for use with different
• Upgrading from trailer to built-in version (VW transporter van)
• Reflecting safety panel (traffic signs)
• Automated IR pavement surface temperature transmitter
• DGPS (antenna and software)
2.3 System
CPU
Analog
220v ac power CPU-bus
supply Parallel com. cabel. I/O
Digital
Digital
Power Output
Computer.
Supply Digital
Sinus Wave 200W Input
12V dc
220v ac
12 Vdc 24 Vdc
Warning Warning
inverter
Trailer lights
Light. Hydraulic motor
Light.
Connection
M
Batt
12V
Original standard batteri
Honda gasoline motor
Geophone signal handling is the most sensitive part of the FWD PRIMAX system.
The reason is the fact that a geophone (velocity transducer) is not linear in the low
frequency band, approx. 0 Hz to approx. 7 Hz. Furthermore, each geophone has it own
“cut off frequency” which varies within the range of +/- 0.5 Hz. This means that in the
lower band each geophone can vary with up to 1 Hz (6.5-7.5 Hz). To compensate for
this non-linearity in the lower frequency band, a reverse filter with the same
characteristics is added. In this way a geophone linear from approx. 0 Hz to approx.
400 Hz is achieved.
If only a filter at 7 Hz is added, this may cause problems, as each geophone may vary
from 6.5-7.5 Hz. Therefore, it is essential to know the exact cut off frequency of each
geophone.
The PRIMAX trailer is a double-axle trailer with overrun brake operating on all four
wheels. The trailer weight is approx. 1270 kg with one layer of weights (with 11 layers
approx. 1670 kg).
Make sure that the towing vehicle is allowed to tow the stated weight. Contact the
local authorities if necessary. The trailer is supplied with a 50 mm trailer hitch ball (EU
standard).
The hitch must be 450-475 mm above ground level allowing the trailer frame to be parallel with
the ground surface and the guide shaft for the drop weight to be perpendicular to the ground
It is important that the trailer frame is placed parallel with the ground surface as the
guide shaft for the foot must be perpendicular to the ground surface.
The towing vehicle must be of a suitable size and have enough driving power to tow a
trailer of approx. 1500 kg (1800 kg SHWD).
The towing vehicle must comply with local authority regulations and the car
manufacturer’s specifications.
Towing vehicle
450 mm.
To warn the traffic during testing, a warning flasher is mounted as standard on top of
the FWD. Due to the height of the towing vehicle a warning flasher should also be
mounted on this for maximum visibility. Sweco Pavement Consultants recommend
consulting the local authorities concerning guidelines for warning light selection and
positioning.
During transport (e.g. air freight) dismantling of the warning flasher on the FWD is
possible in order to reduce the height of the FWD.
If warning lights other than those provided by Sweco Pavement Consultants are to be
mounted, these must be 24 VDC, max. 8 AMP.
An alternator (24 VDC) driven by the Honda petrol engine is charging the battery pack
(2 x 12 VDC battery connected in serial) on the trailer.
Generator
It is possible to take out the 12VDC from the towing vehicle and connect the 12VC to a
12/24VDC converter mounted on the FWD trailer or the towing vehicle. The output from
the 12/24VDC converter should be approx. 40 amp. Another possibility is to connect
two 20 amp in parallel mode.
On most towing vehicles an extra 24VDC generator can be mounted to power the FWD via a
cable on the towing vehicle and connect it to the standard power connection plug at the front
end of the FWD trailer.
Battery pack
The battery pack (24 VDC) on the trailer powers the FWD control, measuring system and
warning lights (on the trailer). By means of the power front connector it is possible to receive
power from the towing vehicle if required (note: max 24 VDC).
The two 12VDC batteries are connected in series.
NB: If an external battery charger is applied, the two 12VDC batteries must be
simultaneously charged with a 24VDC charger connected in series.
Only apply a charger that stops charting automatically as soon as the battery has been fully
charged (100%). Otherwise the risk of damaging the battery is high.
When replacing a battery ALWAYS replace with a new battery with the below specifications:
• 12VDC
• min. 85AMP
• Battery type: Deep cycle
NOTE:
Only run the generator/ Honda engine when the power
plug in front of the trailer is plugged in plug
• Starter rope
• Engine on/off switch
• Fuel tank
• Choke on/off switch
• Gas engine rpm handle
• Air filter
• Oil level cap
NOTE:
The engine MUST run at high RPM to make generator charge the battery.
When the engine is running, the choke can be put in off position.
When stopping the engine: Set the engine switch on/off in off position.
NOTE:
The oil level has to be at the brim of the hole. If the oil level is too low, the engine
will stop automatically. If any problems arise, please also check/see the original
instructions book for the Honda engine.
Normally, the power inverter 12 VDC/220 VAC is installed in and powered by the towing
vehicle. The power inverter is applied for powering computer and printer.
The power inverter should be of high quality – this means that the 220 VAC output must be a
clear sine curve and not a trapeze or squared curve.
Output:
220-240 VAC
200 WATT
Clear sine curve
Power inverter
NOTE:
An electric motor (24 VDC) [no. 7] drives the pump [no. 6] of the hydraulic system.
The pump is directly connected to the rotating shaft of the electric motor [no. 7].
The pump is only running when some of the hydraulic valves (MV 1.1, MV 2.1, MV
2.2, MV 3.1) are on. When the MV 1.2 (foot down) is on, the system does not need
the hydraulic pressure as the foot applies gravity to be lowered.
Pressure Adjustments:
On the side of the hydraulic pump under the red cover there is an Allen key to adjust
the oil pressure. The pressure should normally be adjusted to max. 100 bar on the
manometer [no. 2]. The pressure is raised clockwise. The pressure is lowered
anticlockwise.
NOTE:
If the pressure exceeds 120 bar, the hydraulic system may be severely damaged.
CAUTION:
Do not push the valves with a sharp tool – this would damage the valves
• Power supply
• Power battery
• Digital input (misc. non-contact switches)
• Digital output (misc. relays)
• Analog input (misc. transducers)
All these signals I/O are connected in various junction boxes and all ends in box A
A B
(A) In box A, terminals 1-14 show the FWD digital input status from all non-contact switches
by means of a red light diode on the terminal block.
(B) The FWD digital output status can be read on relays K1-K10 by means of a green light
diode in the relay.
CAUTION: The falling weight must be in safety position when changing or adjusting
this switch!
F5: Lock 1 is on
This switch senses, whether the transport lock in the right side
of the FWD is locked. The switch is located in the right side of
the FWD at the hydraulic cylinder for the foot. This switch is
mounted on a special armature. When the switch needs to be
changed or adjusted, this armature must be dismounted in
order to get to the switch.
F6: Beam is up
The switch senses, whether the beam is up at the
front of the FWD. The switch is located at the front of
the FWD at the beam lock. When adjusted, it should
give a signal when the beam is up and in lock
position.
F7: Lock 2 is on
This switch senses, whether the transport lock in the left side of the
FWD is locked. The switch is located in the left side of the FWD at the
hydraulic cylinder for the foot. This switch is mounted on a special
fitting. When the switch needs to be changed or adjusted, this fitting
must be dismounted to get to the switch.
The relay for the hydraulic motor MG2 is located on the right
side of the FWD.
CPU/RIO
All non-contact switches
Height transducer
Main control box all inputs
Relays K1 to K10 and K 20
Load cell
The load cell is located right above the foot of the FWD with
a high-quality Lemo plug for quick (dis)mounting.
Load cell
Follow below procedure when dismounting the load cell, e.g. in connection with dismounting
of geophone no. 1:
4. Now the foot can be turned clock-wise by means of the two handles on the foot and the
foot can be dismounted from the FWD.
5. Hoist the foot into transport position. NOTE: The foot is heavy. (About 15 kg)
6. The load cell with the geophone peak for geophone no. 1 in the middle is now visible.
The load cell is mounted with three 8 mm Allen screws.
7. Dismount the Lemo connector at the load cell and the three Allen screws. Now the load
cell is loose and dismountable. If it is stuck, a moderate hit with a rubber hammer may
loosen it.
Follow the above procedure (1-7) backwards when mounting the load cell that is 7-1. It
should, however, be noticed that when the load cell is fastened with the 3 Allen screws (step
7), this should be done transversely and it must be fastened with a moment torque spanner.
The FWD can be mounted with 1-18 geophones. Normally, the FWD has 9 geophones. The
geophones are located in the centre of the foot arrangement and on the geophone beam
respectively. Geophone no. 1 is always located in the centre of the foot.
Geophones 2-9 (18) are located on the geophone beam. The 17 geophones on the beam
can be adjusted from 19-250 cm, measured from the centre of the foot.
The physical location of the beam must be in accordance with the geophone setup in the
data collection program (system configuration).
Dismounting of Geophones:
For instance, calibration and checks require dismounting of the geophones from the metal
housing and foot.
Geophones 2-9 (18) are mounted in metal housings, which are mounted on the geophone
beam. When dismounting geophones from these, the following should be done:
1. Dismount the geophone housings from the beam and their connectors in box F.
2. Separate metal housing and geophone from each other by dismounting the nut at the
top of the metal house.
The three temperature sensors are of a high accuracy DT100 type and capable of measuring
from 0-100C.
Option:
An IR sensor can be mounted under need the vehicle.
This IR sensor can measure the surface temperature,
without touching the surface.
When a measuring sequence has been carried out in the data collection
program, the road temperature can be measured by means of the manual
temperature sensor.
1. Drill a 5 mm hole in the road and pour a mixture of water and glucose into
it.
NOTE:
If the temperature probe is not placed correctly in its holder, the foot cannot be raised
into its transport mode position. This precaution protects the probe against damage if
you try to leave the measuring spot while the probe is still in the road.
RIO/FCU unit
• Auto mode
• Manual mode
In auto mode, some of the keyboard functions (manual keyboard) are locked.
In manual mode, some of the PC commands are locked. Auto mode is used
when driving and measuring. Manual mode is mainly used in case of
workshop servicing of the FWD.
14.2 A/D-card
Geophones 1-18
Load cell
Air temperature
Surface temperature
Manual temperature
Weight height transducer
The I/O card controls the entire digital input signal and digital output signal
from/to the CPU card.
magnet Relase Foot is Lock 1 Beam Lock 2 Foot is Weight Man.temp Trig from Trig from Covering Covering From
is lock down is on is up is on up is in holder dis. dis. countt is ON is ON man. box
countt
Control signal
in to I/O card
I/O CPU
Card Card
Control signal
out from I/O card
RL 1 RL 2 RL 3 RL 4 RL 5 RL 6 RL 7 RL 8 RL 9 RL 10 Man.box
Magnet up Magnet Foot up Foot down Lock 1+2 Lock beam Hy-pump on Warninglight Magnet on Spraymark ligh
down off on Aut/man.t
• Vehicle
• Generator/battery
• FWD mechanics/hydraulics
• Setup for weight/buffer
• Setup for geophones
• Software setup
• Practical test on test site
• DMI
15.1 Vehicle
Check the vehicle in accordance with the original vehicle manual (lights, brakes, engine,
tyres, etc.).
Check power inverter (220 V/110 V). (If mounted permanently on the vehicle).
Check DMI (if any). We recommend using the same road section each time for this purpose,
for instance 1,000 m (accuracy 0.001%).
Check the 24V power supply from the 24V FWD alternator.
(Control lamp should not light when the car engine is running)
If the car/FWD is equipped with two 12/24 inverters, then make sure that the inverter
indication for power IN 12V and for power OUT 24V is turned on while the car engine is
running.
Both inverters have “overload” lamps. These will light up when the batteries are defect, in
case of low power, no connection, or if the inverter is defective.
Stand clear of all moving parts and do not allow observers to stand close to
the FWD while operating.
By changing weight, number of buffers or drop height, it is possible to achieve the desired
peak load level and still maintain load pulse duration of 25-35 ms (we recommend to work
with a pulse time of 27-34 ms) and essentially half-sine load pulse shape.
Do not forget to check that the correct setup is used for the measuring assignment in
question.
By changing the number of buffers, it is possible to achieve the desired peak load level
(10-150 kN FWD/ 10 - 250 kN HWD/ 10-350 kN SHWD) and still maintain a load pulse
duration of 25-35 ms (we recommend working with a pulse time of 27-34 ms).
When mounting or dismounting of buffers, always make sure to have the same configuration
on each buffer plate.
See table section 16.2 Setup for Weight concerning target Load and load pulse time
Buffer plates without any buffers Buffer plates with 11 buffers on each side
Buffer plates with 9 buffers on each side Buffer plates with 7 buffers on each side
Buffer plates with 5 buffers on each side Buffer plates with 3 buffers on each side
• Switch on the FWD by turning the main key “ON” and switch the safety key to
position 1.
• Take safety cover of, front and rear.
Remove the manual weight locks, Fig.1, from the holder and screw magnet and
weight together, Fig. 2.
• Lower foot and raise magnet with weights into top position.
• Turn the two locking devices in against the weight, Fig.3.
Fig. 1 Fig. 2
NOTE:
Fig. 3
The weight can be changed with 40 kilo intervals from 108 kilos (base weight) to 628
kilos (HWD).508 kilos (FWD).
0 108
1 148
2 188
3 228
4 268
5 308
6 348
7 388
8 428
9 468
10 508
11 548
12 588
13 628
14 668
15 708
16 748
NB
The below loads and load times are only guiding values as the values can change quite
considerably. This depends on the kind of material to be measured on (asphalt, concrete,
gravel, etc.). Our specifications for the puls time is to be between 25-35 ms, but we
recommend to work with a puls time from 27-34 ms
Within specification
Within recommendation
Outside specification
3 x buffers
Falling height
Weight
Layer 100 200 300 400 500 600
16 x x x x x x
15 x x x x x x
14 x x x x x x
12 x x x x x x
10 x x x x x x
8 x x x x x x
6 42/49 78/42 112/38 146/32 180/28 193/27
4 41/45 67/40 96/34 125/30 153/26 166/25
2 33/38 50/34 69/31 88/28 106/26 115/25
0 21/31 36/28 46/27 56/26 66/24 70/23
kN/ms
4 x buffers
Falling height
5 x buffers
Falling height
6 x buffers
Falling height
7 x buffers
Falling height
8 x buffers
Falling height
9 x buffers
Falling height
10 x buffers
Falling height
11 x buffers
Falling height
17.1 CONTENTS
• Troubleshooting:
o Car
o Foot arrangement
o Weight arrangement
o Control box
o Temperature sensors
o Chainage counter
o Data reading
NB!
If an error occurs during start up or when operating with the PRIMAX, an error message will
normally pop up on the computer screen.
In cases where this error message is not enough to find an error, the below trouble shooting
procedure should be used:
2. Check all cable connections and try to connect the Ethernet cable directly to the RIO,
instead at the front end of the trailer.
Problem: Solution:
In case of any problems We recommend contacting the local car dealer in order to solve the
with the car. problem.
Problem: Solution:
Foot cylinder not stopping in 1. Limit switch for foot up position is out of adjustment or defect.
upward direction travelling Adjust or replace sensor F8 (see Part7).
from initial position and
hydraulic pump keeps
pumping until "time out" signal
is displayed on computer
screen.
Foot cylinder stops in The hydraulic pressure switch is not working. Replace or adjust
downward position and (see Part 9).
sequence is interrupted
Problem: Solution:
Foot cylinder not running. 1. Check whether pump motor is running. If not, then
check motor fuse and motor relay in box A and main
fuse.
Problem Solution
Weight Cylinder not able to run 1. Check whether hydraulic pump is running. If not, then
check fuse and relay in box A and main fuse.
2. Check output status on relay K7, K1, K2
3. Check whether the red LED on valve connector
Weight UP or DOWN is on.
“POWER ON” not lit, when key 1. Check main fuses and fuses in box A
is turned on 2. Check power relay K20 in box A.
Problem Solution
“FWD MANUAL PANEL” is not
working. Check all electric cards (plug/unplug the cards)
Accumulators not charging. 1. Check that voltage on generator is at approx. 27V when
the car engine is running
Problem Solution
Accumulators not charging. Bad connection between snap terminal and accumulators.
Clean with steel brush and, if required, with boiling water.
Generator running, and Accumulators are defect. Check by acid test and replace.
voltages is in order, but
accumulators not charging (see Connectors in bad shape.
photo in part 4.2)
If an error cannot be found/repaired, contact dealer or
Sweco Pavement Consultants directly.
Problem: Solution:
No connection to FWD 1. Check that FWD equipment is switched on
equipment (error during send)
2. Is cable between computer and FWD equipment fitted
correctly?
Problem: Solution:
Temperature reading 0 1. There is a short circuit in wiring from control box to
temperature sensors or in connector on geophone beam.
Repair or replace.
Problem: Solution:
Chainage counter not counting Check both wheel sensors - are LED lamps lit when metal is
up or not counting down held in front of them and then if both LEDs are not lit when
there is no metal (target). Replace if faulty. (See Part 7
section F11 and F12)
Problem: Solution:
No load readings
1. Check load cell cable. Repair if damaged.
Problem: Solution:
Drop is made but no readings Check, whether weight triggers F9 functions. Replace, if
are received. defect. (Part 7 Section F9)
Check status under License in bottom right corner of the
software. It shall be the name of the FWD, if it is DEMO the
connection between FWD and laptop is not working.
Problem: Solution:
Equipment not marking 1. Check that equipment is connected correctly
18.1 Car
Checking of lights x
and reflectors
Replacement of x
bulbs and reflectors
Checking of tyre
pressure (also x
spare wheel)
Follow the X X X X X x
maintenance plan
from the car
producer
Lubrication of transport x
safety lock of geophone x With Teflon oil
beam
Replacement of weights x
Water/soap/alcohol
General cleaning x x
Cleaning of operating
panel and x x Alcohol
bushes
Checking of generator x
performance (lamp)
Batteries: Checking of
liquid level x
Monitor
Cleaning of monitor
cleaner
x
Keyboard
Cleaning of keyboard x
cleaner