Gardner Denver VM 135, Руководство по эксплуатации, безопасности и техническому обслуживанию

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H4960700 Date 20.11.08 Issue 002
31
TROUBLE SHOOTING
SYMPTOM POSSIBLE CAUSE REMEDY
Loss of hydraulic system
power. Emergency stop button
engaged. Disengage
Power take off unit not fully
engaged. Re-engage
Geared power take off unit
failure. Test by replacement.
Main hydraulic pump
failure.
Test by replacement.
Relief valve blowing off. Pressure setting incorrect –
reset to 190 Bar.
Stabilisers can be
deployed/ stowed but no
hydraulic power to boom. Leg set switch failure. Test using a multi meter
renew if necessary.
Cables damaged. Test using a multi meter,
renew if necessary.
Dump valve solenoid
failure.
Test using a multi meter,
renew if necessary.
Hydraulic oil overheating Hydraulic oil reservoir
contents low. Replenish.
Worn main hydraulic pump Connect a flow meter and
pressure gauge to the
pressure side of the
hydraulic pump – the pump
delivers approx. 8 ltrs/min
@ 190 Bar – if necessary
renew.
Relief valve blowing Reset at 190 Bar
Whilst operating the
platform the stabiliser legs
creep upwards Lock valve leakage. Stop operating as soon as
possible, stow stabilisers
and renew the
malfunctioning lock valve
cartridge.
DO NOT
OPERATE PLATFORM
UNTIL FAULT IS
RECTIFIED.
Platform booms creep
downwards
(cont)
Lock valve leakage. Stop operating the platform
as soon as possible, stow
platform and renew, the