20
6.2.
Troubleshooting
a) Lift does not pump or will not hold a load
• Insufficient oil possibly lost during transport. Add low-viscosity
hydraulic oil (HLP 35)as far as the upper mark on the dip stick. Ram
must be fully in starting position!
• Check the non-return valve on the cylinder. Remove any dirt that
may be present, or replace the valve.
If these first points are correct, then the groove ring in the guide must
be defective. This generally does not occur until after at least four
years. In this case, the lift must be overhauled.
Removal of the guide: Disconnect the pit lift from the power supply.
Unscrew the guide using a suitable tool. The piston rod can remain in
the lift. After installation, bleed the lift; see page 13.
b) Oil loss on the piston rod
• Reseal the guide, replace the wiper ring and the groove ring
c) Oil loss on the lifting or lowering spindle
• Replace seals; lubricate all sliding parts with Molykote.
6.3.
Replacement equipment and repairs
Small repairs can be carried out by the customer, assuming technical
competence. Replacement parts sets are available.
Please note the following when ordering replacement parts: In addition
to the item number from the replacement parts list, you must specify the
model and load capacity (from the data sheet), or alternatively the main
dimensions of the piston rod, the lift height, and the year of manufac
-
ture.
In the event of major repairs, and after 4 to 5 years at the latest, the lift
should undergo thorough maintenance and overhaul, for safety rea
-
sons.
We will repair your equipment within a few days, with a full factory
warranty. Replacement equipment is available for common models and
load capacities
