5. Preparing for Measurements
5.1 Checking the FWD/HWD Hardware
Four pushbuttons and several LEDs (Light Emitting Diodes) at the Compact15 front panel
may be used for manual control and check of the FWD/HWD operation. The pushbuttons are
enabled by turning and holding the MAN.KEY switch in the clockwise position (which in
turn will disable remote control from the computer in the towing vehicle).
If the FWD/HWD hydraulics at any time does not operate as expected when the manual
control pushbuttons are used, then refer to Section 16, “Trouble Shooting”.
SAFETY NOTE!
Whenever somebody is close to the moving parts of the FWD/HWD, MAKE
SURE that all POWER has been switched OFF!
(ON.KEY switch OFF and, if the Remote Control Box in the vehicle is connected, the
SYSTEM ON switch should be toggled OFF (out) as well). All LEDs (except 12V
Bat) at the Compact15 front panel should be off!
Prepare/check the FWD/HWD Hardware as follows, noting that the MAN.KEY must be
turned for the manual buttons to function:
1) While the drop weight subassembly is still in its top (transport) position, check that the
rod of the centre deflection device (deflector holder) sticks out through the bottom of
the loading plate at least a distance of some 10-20 mm.
2) Check the springs, foam rubber guides and set up of all deflector holders to ensure
they are functioning properly. Make sure that the spring tensions are properly adjusted
such that a force on the end of a feeler can move the holder and feeler upwards until
the feeler is at least some 5 mm inside the bottom of the holder body (resp. the loading
plate), and that it returns easily when released again (otherwise apply a few drops of
silicone oil to the top guide rod).
3) Check that the cable for the raise/lower bar is properly positioned on both guide
pulleys.
4) Turn the MAN.KEY switch while you shortly press the RP (Raise Plate) button, so
that the drop weight subassy. is raised to its topmost position, releasing the transport
locks.
5) Unlock the transport locks. (In case of automated locks, this is done by pressing the
LC button).
6) Remove the locking pin securing the guide mechanism of the far (front) end of the
raise/lower bar.
7) Lower the plate (subassy.) to the ground by pressing the LP/RW (Lower Plate/Raise
Weight) button. Keep the LP/RW button pressed until the PL LED has turned off (see
5.3 “Lock error” and “Plate not low error” below).
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