Settings; Pressure Setting On The Angle-Type Safety Valve - Laird OL 4503 Operation Manual

7.4

Settings

The angle-type safety valve and the thermostat are set to the specified values by the manufacturer. Should
any modification be required, please follow the steps indicated below.
1
2
Fig. 11: Angle-type safety valve
1 Cover nut
3 Adjusting screw

7.4.1 Pressure Setting on the Angle-type Safety Valve

PLEASE NOTE
A small amount of oil may leak from the valve.
 The unit is switched off.
1) Loosen cover nut using a metric AF36 wrench and dismount. Use second wrench of the same size at
point 4 in Fig. 10 for holding the valve in place.
2) Loosen counter nut by turning it anticlockwise (use a AF36 wrench).
3) Set adjusting screw to the pressure value required:
 Screwing in will increase the pressure setpoint.
 Screwing out will decrease the pressure setpoint.
4) Tighten counter nut by turning it clockwise.
5) Re-install cover nut and tighten.
 Pressure setting is accomplished.
6) Operate unit and check pressure.
 If the intended pressure value is not yet reached, repeat the whole procedure.
Laird Technologies GmbH
Operation Manual (Translation)
2 Counter nut
4 Wrench to be used here for fixation
Date: 06-Jul-2015
Version: 2.0
Controlling the Unit
Oil-Air Cooling Unit OL 4503
1264.00
Settings
3
2
4
25