Service and Parts manual (Version B)
75
Wireless
Cause
Solution
The pressure relief valve has not been
correctly adjusted.
Contact technical services to have the
valve correctly adjusted.
The pump's capacity is inadequate.
Replace the pump.
The maximum height difference (more
than 60 mm) has been exceeded.
Cancel the fault by pressing [UNLOCK]
for 2 seconds. If the fault occurs again,
contact technical services.
6.6.2
The column lift cannot be lowered
Cause
Solution
No battery power.
Check the main fuse above the batteries.
Have the batteries checked by a battery
specialist.
The pawl does not retract from the safety
lock.
First raise the column lift about 35 mm
and then lower it.
The electrically operated lowering valve
on the hydraulic unit will not open.
There is no voltage on the lowering valve
or the lowering valve is faulty. Have
technical services solve the problem.
Contaminated or damaged lowering
valve.
Have the lowering valve cleaned or have
it replaced by technical services.
The maximum elevation difference (more
than 30 mm) has been exceeded.
Press [UP] until the height difference has
been leveled out. If this occurs regularly,
contact technical services.
The maximum height difference (more
than 60mm) has been exceeded.
Cancel the fault by pressing [UNLOCK]
for 2 seconds. If the fault occurs again,
contact technical services.
The highest position is virtually the same
as the highest locking position.
Have the height set again by technical
services.
6.6.3
The column lift lowers all by itself
Cause
Solution
The cylinder seal is damaged; oil is
leaking continuously.
Have technical services replace the cuff
or the cylinder.
Leak in the oil line couplings.
Tighten the couplings or union nuts.
Contaminated or damaged non-return
valve.
Have the non-return valve cleaned or
have it replaced by technical services.
Contaminated or damaged lowering
correction valve.
Have the valve cleaned or have it
replaced by technical services.
Summary of Contents for ST 1065-FWF
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Page 111: ...Service and Parts manual Version B 111 Wireless 8 19 Hydraulic cylinder ST1065 ST1085 ST1100 ...