Pfaff Praktikus Betriebsanleitung Seite 11

Trolley lift Praktikus
English
Recommended Hydraulic Oil and Lubricant
For perfect function of the stacker we recommend to use a hydraulic oil respectively a lubricant as per the below
table. These special oils fulfil best the technical requirements with regard to viscosity (walk penetration) and Pour-
point. The lubricants are based on ambient temperatures of - 10° up to + 40°C.
rec. working substance for the hydraulic system:
Viscosity class Hydraulic Oil HLP-DIN 51524 T 2 - ISO VG 46
DEA
UK-Mineralölwer-
ke Eschweiler
Every other reputed brand of lubricant corresponding to the applicable specification of the table may be used.
*) decomposable by 98,8% within 21 days.
Waste oil must be disposed of in accordance with legal provisions!
Malfunctions and their causes
Hydraulic system
Malfunction
The trolley lift PRAKTIKUS does
not lift – the pump does not work
The trolley lift PRAKTIKUS does
not lift the load, although the
pump is working perfectly
Loaded or unloaded, the trolley
lift PRAKTIKUS only lifts slowly
or not at all when the pump is
actuated
Raised load is lowered of its own
accord. Oil loss on hydraulic cyl-
inder.
The raised load is lowered too
slowly
Disposal:
After placing out of service, the trolley lift PRAKTIKUS parts must be disposed of or
recycled in accordance with legal provisions.
technische Änderungen vorbehalten
Optimol Hydo oil 5045
Esso Nuto H 46
BP Energol HLP 46
Shell Tellus oil 46
Aral Vitam GF 46
Mobil D.T.E. 25
Astron HLP 46
*)
UKABIOL HY 32
Cause
air in hydraulic system
Insufficient oil in the tank
Load too heavy – the pressure control
valve is active
Lowering valve does not close any
more or the valve face is not sealed
because of dirt
Pressure control valve displaced or
valve face soiled
Hydraulic system pump is defective
Leakage in the hydraulic system
Lowering valve does not close any
more or the valve unit is not sealed be-
cause of dirt
Incorrect valve set-up.
Sealing elements are worn
Temperature too low – the hydraulic
system oil is too thick
design changes under reserve
F 08.01.005
rec. lubricant for greasing points:
multipurpose grease - DIN 51825 T1 - K2K
Optimol Olit 2 EP
Esso Beacon 2
BP Energrease LS 2
Shell Alvania grease R 2
Aral Aralub HL 2
Mobil Mobilux 2
Glissando FT 2
Elimination
ventilate the hydraulic system
Refill with oil (while the fork is low-
ered)
Reduce load
Clean or replace
Adjust or clean valve
Repair or replace hydraulic system
pump!
Seal!
Clean or replace
Adjust lowering valve
Replace sealing elements
Find a warmer location
changements techniques sous réserve
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