BA551501-en
31
Error
Cause
Remedy
Air motor running dry; no
oil in the maintenance
unit
Top up oil
Air pressure too low;
local cause
Contact service
Air motor not running at
all
Air filter plugged; dirt
from supply network
Clean
Air motor running dry,
comes to a stop; no oil in
the maintenance unit
Top up oil
Air motor defective
Replace
Rapid lift control does
not work
Air filter plugged; dirt
from supply network
Clean
Valve levers blocked;
mechanical (local) cause
Contact service
Valve levers broken;
mechanical cause
Contact service
Load is lowering when in
raised condition
Lowering spindle not fully
closed; spring not fully
closed
Close lowering spindle
Load valves leaking
Contact service
Unloaded rams are
raising slowly at first,
then get suddenly faster
Fluid level too low due to
shipping damage or
normal consumption
Top up hydraulic fluid
Rams are "rattling";
inaccurate controlling
Fluid level too low due to
shipping damage or
normal consumption
Top up hydraulic fluid
Hydraulic system must
be bled
Contact service
Leakage at ram bleeder
If leakage remains
limited =
no error
Fully raise the ram in
regular intervals to
eliminate any leaked oil
accumulation
Leakage at valves
Too much oil from
maintenance unit
Set lower
Oil dilution by water from
compressed air
Check maintenance unit
Leakage at spindle guide Mechanical seal wear
Contact service
Leakage at sealing plug
Sealing plugs leaking
Contact service
