AMF-BRUNS K90 ACTIVE - Platform Jerking; Platform Lowering Slowly

Faults and Troubleshooting
Back-in-Box-Lift K70 / K90 / K90 ACTIVE Page 61 of 100
Fault
Possible Cause
Remedial Measures
The Back-in-Box-Lift
raises the platform
slightly but abruptly af-
ter it has extended.
The 2/2-way valve is defec-
tive.
Have the 2/2-way valve replaced
in a specialist
workshop.
The platform jerks
when retracting into the
cassette.
The Back-in-Box-Lift is not
adjusted correctly.
K70 / K90: Adjust the switching
point for the retract position or
adjust the rollers (see Section 9.1,
page 62).
K90 ACTIVE: Adjust the switching
point for the retract position (see
Section 9.2, page 68).
The Back-in-Box-Lift
lowers the platform
slowly of its own ac-
cord.
The lowering valve is de-
fective.
Have the lowering valve replaced
in a specialist workshop.
The ball-cock is open.
Close the ball-cock (see Figure 27,
page 45 (K70 / K90), or Figure 33,
page 49 (K90 ACTIVE)).