Pfaff 034554030 Betriebsanleitung Seite 31

Electric Stacker with Electric Travel
English
EGV ESL EPH
6. Description of Required Inspection and Maintenance
6.1. Hydraulic System
The hydraulic system consists of the hydraulic aggregate with mounted-on speed-adjustable lowering valve
and safety valve, as well as lifting cylinder with incorporated lowering brake valve.
The hydraulic system requires almost no 5.1 maintenance apart from the recommended tests
(see 5.1 - 3.4) and the required oil change (see 5.1 - section 13 and oil recommendations 5.2).
Prior to maintenance or repair relieve the pressure in the hydraulic system. Lower the fork completely and
remove the load.
If repair is unavoidable on the extended lifting structure, secure all parts (fork, mast, cylinder) against unin-
tended lowering.
Do not run the hydraulic pump without oil !
Replace the pressure hoses in case of damage or on demand, but at least after 6 years.
For oil changing suck the oil out of the oil tank.
For further details see 5.1 - oil recommendation 5.2
Ventilate the hydraulic system after oil change or on demand.
Ventilation may only be effected in unloaded state.
Ventilation Process
Slightly open the screw plug • at the top of the hydraulic cylinder.
Operate the adjusting lever (see 4.3.3) until hydraulic oil discharges without bubbles.
Tighten the screw plug • before operating the lowering valve
6.2. Adjustment of the Lifting Chain
Adjust the chain length by tightening the tension nut ƒ so that the load chain is tightened
when the fork is completely lowered.
After adjustment fix nuts ‚ and ƒ by a lock-nut.
At regular intervals, check the lifting chains for fractures, scores and marks of wear (see
5.1)
The permissible elongation must not exceed 3%.
Replace damaged chains or those elongated by more than 3%
6.3. Electro-magnetic Spring Brake
Works on the brake may only be executed by
authorised and competent personnel.
The brakes are virtually maintenance-free.
However, we recommend to check the ventilation
gap SLü = at regular intervals depending on type
of application (every 2000 operating hours). If the
ventilation gap has reached SLümax ] 0,5 mm,
the nominal value SLü = 0,2 mm has to be re-
adjusted.
For that, loosen the fixing screws (A) and tighten
the sleeve screws (3) until on three points of the
circumference (measured between magnetic
body and anchor washer by means of thickness
gage) the same value for SLü = 0,2 mm results.
Then, re-tighten the fixing screws.
6.4. Electric System
During all works on the electric system, pull the battery plug out of the feeding socket.
Due to danger of short circuit , no metallic objects must be laid on the battery.
Design changes under reserve!
F8.1.20
Fühlerlehre
S
Lüftweg
Lü
A
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