TROUBLESHOOTING
42 | EN
www.schmalz.com
30.30.01.00174/06
8 Troubleshooting
The vacuum tube lifter
J
UMBO
must only be installed and maintained by qualified specialist personnel,
mechanics and electricians. Work on electrical equipment must be carried out by qualified electrical
specialists only.
After repair and maintenance work, always check the safety features as
described in sectio
n 9.2 “Check safety features”.
If the
load cannot be lifted
, work through the following list to identify and rectify the problem.
Problem
Solution
Preventive measures
Pump rotation direction
reversed
Reverse the polarity of the pump
phases
-
Use equipment to measure
the rotating field
-
Use an automatic phase
sequence indicator
Pump does not run
Check the electrical connection:
- Check the power supply line
- Check for voltage on all phases
Required vacuum not attained Vacuum tube lifter
J
UMBO
with
pump:
-
Examine the supply hose and
tube lifter for cracks
-
Check gripping mechanism
-
Clean dust filter cartridge and
filter of the operator handle
(for Flex 20/35) and pump or
replace if necessary
-
Check pump for faults. See
separate pump instructions
Vacuum tube lifter
J
UMBO
with
pump:
-
Increase filter maintenance
interval (see section 9.7)
-
Consult with the
manufacturer
Vacuum tube lifter
J
UMBO
with
ejector:
-
Examine the compressed air
hose and tube lifter for cracks
-
Check gripping mechanism
-
Clean or replace the filter of
the operator handle (for Flex
20/35)
-
Clean the silencer of the
vacuum generator
Vacuum tube lifter
J
UMBO
with
ejector:
-
Increase filter maintenance
interval (see section 9.7)
-
Increase maintenance
interval for the filter in the
ejector
The load is too porous or non-
rigid
-
The load cannot be lifted; use
a different suction pad for
non-rigid parts
The load is too heavy
-
Decrease the load, use a
different lifting device
-
Ensure that the workpiece to
be lifted does not exceed
the maximum load
