T61741
Revision:
23
STENHØJ MAJOR
TROUBLE SHOOTING CHART (continued)
SYMPTOM CAUSE
REMEDY
G. Unusually high
noise level
Pump worn
Replace pump
Lift overloaded
Max. load - see decals
Seal in high pressure
cylinder defective
Replace or renovate cylinder
Incorrect post position
Re-position posts according to installation instructions
Oil pressure release valve
out of adjustment
Adjust:
7,2 t = 225 bar
. Lift cannot ascend
Overloading
Max. load - see decals
Insufficient pressure from
pump unit
See step M
I. Lift
cannot
descend
Pump does not start
See step L
One or more of the ratchets
still activated
Lift free from ratchet rails before lowering
Air system blocked
See step E
J. Lift cannot reach
topmost position
Insufficient oil in pump unit
Fill up oil until middle of oil glass/dip stick with
platforms at floor level. Oil type: see oil specifi-
cations on page 49.
Incorrect cable adjustment
(too long)
See page 20
K. Platform descends
when ratchets are
not engaged
Leaks in hydraulic system
See step F
Lowering valve/ non-return
valve leaking (internal in the
pump unit)
Call authorized service engineer
L. Pump unit cannot
start
Electric failure
Check fuses.
Incorrect electric connections
Call authorized electrician
Fault in control box
Faulty electric motor
Defective pushbutton
Replace
M. Pump unit delivers
none or insufficient
pressure
Pump defective
Replace pump
Air in hydraulic system
Lower platforms to bottom position without load
and keep pressing DOWN-button for
approx. 20 sec.
Non-return valve or oil
pressure relief valve defective
(internal in pump unit)
Call authorized service engineer
Содержание MAJOR 7000
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