Bleeding the Hydraulics
Bleeding may be necessary from time to time, and especially after exchange of a hydraulic
component or in case of a too low hyd. oil level in the reservoir. The need for bleeding will often
result in a “Drop time-out” error.
Use the procedure in the following for the bleeding (turn ON the MAN.KEY switch of the
Compact15 Front Panel while using the manual pushbuttons for operation of the FWD):
1) Refill the hyd. Reservoir with hyd. oil if necessary (See 16.1, “Checking the Hydraulic Oil
Level”).
First bleed the two “raise plate” cylinders by moving their shafts full-stroke some times in the
following manner:
2) Unlock the transport locks (first release by pressing shortly the RP button).
3) Lower the plate by pressing the LP/RW button and KEEP this button pressed only until
the weight starts raising (the TG LED turns off).
4) Raise again the plate completely by pressing the RP button, until the P1 LED turns off
(PH LED should then be ON).
5) Repeat steps 3) and 4) at least twice.
Then the main cylinder (raise weight cylinder) should be bled - two Allen screws for this
purpose are placed as indicated on the figure in the following:
6) Repeat step 3).
7) Drop the weight from a small height (press and keep pressed the red DROP button, then
also press the LP/RW button, until the weight has dropped, then release both buttons).
8) Raise the catch to its top position (LP/RW button).
9) Lower the catch completely (LC button).
10) Repeat steps 7) to 9) at least twice, the last time only lowering the catch some 10 cm.
To Next Page