10 service, 11 technical data – Lukas PO-4 User Manual
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9.3 Preventive Maintenance
The oil tank must principally be cleaned with each oil change.
To clean the oil tank, the mounting screws on the oil tank cover must be loosened and the motor/
pump unit pulled out.
Attention
The tank must be cleaned by flushing with hydraulic oil.
Do not use textiles!
10 Service
Service may be carried out exclusively by the manufacturer of the device or by personnel trained
by the manufacturer and the authorized dealer.
Only genuine LUKAS spare parts may be used for repair works.
When carrying out maintenance or service works be sure to wear protective clothing (see safety
regulations), since rescue devices may be under pressure even in unoperated state.
10.1
Trouble Shooting
Malfunction
No delivery or only partial delivery from pump at no load.
Cause
Air in the suction area of the pump.
Remedy
Reduce the pressure at no load as far as possible - turn the adjusting screw of the pressure limiting
valve in anti-clockwise direction. Switchíng the pump on/off repeatedly supports the venting
process.
If the defects cannot be repaired, contact an authorized LUKAS dealer or the LUKAS service
department. The address: LUKAS Hydraulik GmbH, Weinstraße 39, 91058 Erlangen; P.O.B.
2560, 91013 Erlangen Germany; Service-Tel.: +49 / 91 31 / 6 98 - 3 38;
Fax: +49 / 91 31 / 69 83 53.
Description
Ref. no.
Operating press.
Dimensions
Weight
Remarks
PN (MPa)
(lxwxh) mm
kg
PO4-4-NA 500
84112/12
50
22
for
PO4-4-NA 700
84112/22
70
22
single-
PO4-4-NA 500F
84112/14
50
22,5
acting
PO4-4-NA 700F
84112/24
70
260x250x400
22,5
cylinders
PO4-4-N3/N4 500
84112/13
50
22,2
for
PO4-4-N3/N4 700
84112/23
70
22,2
double-
PO4-4-N3/N4 500F
84112/15
50
22,7
acting
PO4-4-N3/N4 700F
84112/25
70
22,7
cylinders
weight including oil filling.
11 Technical data