21
5 Troubleshoot
This chapter provides information on how to investigate or rectify problems that may occur. Actions
marked with (*) must be carried out by TAWI or a TAWI authorised service technician.
Problem Likely caused by
Action required
Vac
uum lift
er does no
t lift
Vacuum pump not started
Check function of vacuum pump. See
Install vacuum
pump on page 4
.
Load too heavy
Reduce load. It must not exceed the lifting capacity of
the lift.
Air leakage
Check connections, air and lift tube for damage or
wear. Tighten clamps and, if necessary, change air or
lift tube (see
Shorten or change lift tube on page
8).
Check filter unit for leakage.
Dirty vacuum pump filter
Clean filter inset, see
Clean vacuum pump filter on
page 18
.
Dirty suction foot filter
Clean suction foot filter, see
Clean suction foot filter
on page 17
.
Vacuum pump installed in the wrong
direction
Check the direction of rotation of the vacuum pump. Is
air blowing from the silencer? If not, change the phas-
es over. This must be carried out by a qualified electri-
cian, see
Install vacuum pump on page 4
.
Suction foot installed incorrectly
Remove suction foot and clean the foot filter. Refit
suction foot, see
Install suction foot and touch bolt
on page 10
. Do not overtighten the fixing bolts.
Problems can occur because the bolts are undertight-
ened or overtightened. Overtightening may deform the
top of the suction foot.
Suction foot rubber gasket damaged
or worn
Replace gasket.
Tool mo
ves slo
wly
up
/do
wn
Air leakage
Check connections, air and lift tube for damage or
wear. Tighten clamps and, if necessary, change air or
lift tube (see
Shorten or change lift tube on page
8)
. Check filter unit for leakage.
Filter unit control valve open
Adjust filter unit control valve, see
Install filter unit
and air tubes on page 7
.
Operating handle t
oo
high or lo
w
Wrong adjustment of load balance
Adjust load balance without and with load, see
Adjust
load balance on page 12
.
