Bleed Lifting Cylinder; Check Indicator Lamps; Carry Out Function Test; Check Safety Cylinders - Blitz DUPLEX S2 Operating Instructions Manual

8. Maintenance

8.9 Bleed lifting cylinder


Always bleed lifting cylinder unloaded.

Each lifting cylinder has 3 bleeding positions.
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1. Extend plunger rods approx. 1m.
2. Extend further and bleed all three positions dur-
ing lifting and lowering, starting at the bottom.
Loosen bleeding screw approx. 1 turn until oil
escapes without bubbles; then close again.

8.10 Check indicator lamps

1. Switch on lift with main switch.
2. Switch on controls with On switch.
All 4 malfunction indicator lamps light up for 1
second.
3. Switch lift off again.
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8.11 Carry out function test

Danger of personal injury through
malfunctions.
WARNING
 Deactivate and secure lift immediately after
detecting malfunctions.
 Rectify malfunctions immediately and ensure
trouble-free operation.
1. Check lift function without load.
2. Check full lift function with load

8.12 Check safety cylinders

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Check safety cylinders annually.
i
Strictly observe test interval.
Danger to life due to electric shock
when working on open control cab-
inet.
DANGER
 Only electricians are permitted to work on
open control cabinet.
 Never touch live components.
1. Lift vehicle 1.85m and measure initial height.
2. Check safety cylinders: Open control cabinet
and press and hold button "1" approx. 1 min.
All solenoid valves of the working cylinders are
opened. The safety cylinders carry the entire
load.
Initially the load drops a little (maximum
i
100mm). Afterwards it must come to a
stop with activated button.
117127 ● 07/2011