C−LRV lift control valve Operation
82/92
300−I−9010212−E−10/08.08
Page (Chapter)Corrective actionCauseFault
S Hydraulic line to the
cylinder is too small
S Fit larger line
S Oil is too cold S Use multigrade oil
S Install oil heater
S Provide parking circuitry
S Too much friction in
system
S Align cylinder and rails
Car overshoots landing
during DOWN travel
S Deceleration switches
wrongly positioned
S Set as per page(s) 58 (4.3.8)
S Safety relay R1 drops out
too early, or without a
delay
S Set as per page(s) 23 (1.4.4)
Car overshoots landing
during DOWN travel
S Deceleration time too
short
S Increase deceleration in
C−DELCON
S Deceleration switches in
shaft wrongly positioned
S Set as per page(s) 58 (4.3.8)
S Feedback sensor (Hall
sensor) GND not
connected
S Connect GND to terminal
12
49 (4.2.3)
S Demand values set too
high
S Set as per page(s) 79 (5.2)
S DOWN pilot valve
contaminated
S Clean pilot valve 61 (4.3.11)
S Oil is too cold S Consider installing oil
heater; providing parking
circuitry
Leakage in hydraulic
system (test only when
oil is cold)
S Pressure drop in approx.
3 minutes is not more
than 5bar (with ball valve
closed)
S None, valve is leak−tight!
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