stertil-KONI ST 1055, Installation, Operation & Service Manual, Page: 27 / 50

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7.7 ADJUSTING THE PALLET JACK MECHANISM (ONLY ST 1072)
When moving the handle bar up and down, with the handle in position 3 (see fig. 7.2), the cylinder should at the correct
setting be raised approx. 5/16" per stroke. Set the handle to position 2 and move the handle bar up and down; at a correct
setting the cylinder will not be raised now.
When the cylinder is raised, nut 1 must be loosened and the adjusting nut be turned clockwise. When the cylinder comes
down, the adjusting screw must be turned anti-clockwise until the cylinder does not come down any further.
Bring the cylinder in its highest position and set the handle to position 1; now the cylinder should come down. When it
comes down slowly or not at all, the adjusting screw must be slightly tightened.
Repeat the aforementioned steps until all movements are normal. When the settings are right, nut 1 can be tightened.
8. SERVICE
8.1 GENERAL
Attention: All repairs carried out on the lifting system by non-service department personnel, the consequences of
such repairs are entirely at the user's risk.
The term 'service department' is the Stertil service department or a service department recognized by Stertil.
Two tables are provided to assist the service technician in locating faults in the lifting system .
The first table shows the faults indicated by the LEDs on the printed circuit (see fig. 8.1) and the second table
shows possible mechanical faults.
When a fault occurs, the "SET REF" light on the control panel will go out. On the box where the fault has
occurred the "SET REF" light will start flashing. When serious failures occur, e.g. height differences of over
60 mm between columns and an emergency stop, both the "SET REF" light and the mains power light
will go out. In the box subject to failure faults are indicated by means of 4 LEDs (see sticker (fig. 8.1) in the
control box and table on page 23).
Remarks:
- Danger of getting injured by voltage and when used inexpertly .
- Only remove the covers to carry out maintenance. In this case make sure that the lifting system is
disconnected from the electrical power supply.
Fig. 7.2, Adjusting the pallet jack mechanism