Leser 526 API - Section 9.9: Adjusting the Set Pressure

LESER Global Standard
Assembly instructions for type 526 API
LGS 4104
Page 30/45
disclosure cat.:
II
proofread:
SSt
published date:
06/14/18
effect. date:
05/18
author:
Nieh
released by:
KUW
replaces:
initial
status:
Published
resp. depart.:
IE
date of release:
06/14/18
revision No.:
2
doc. type:
LGS
change rep. No.:
NA
retention period:
10
protected
9.9 Adjusting the set pressure
Illustration
Description
Aids / Tools
Figure 9.9-1
Secure the spindle from turning with a pin
punch.
Pin punch
Open-end
spanner
Figure 9.9-2
Slowly pressurise the valve on the test
bench to find out whether the valve opens
at the set pressure. The set pressure of
the valve has been reached when you
can hear air escaping. Full opening must
be achieved.
If the valve opens outside the stipulated
set pressure tolerance, then the adjusting
screw must be adjusted again.
Turning in a clockwise direction causes
the valve to open at higher pressure.
Turning in a counter-clockwise direction
causes the valve to open at lower
pressure.
Release the pressure when readjusting
the adjusting screw. Readjust the
adjusting screw and then pressurise the
valve again.
Open-end
spanner
Figure 9.9-2
If the pressure setting has been
completed, secure the adjusting screw
with a lock nut.
Afterwards, check the set pressure once
again.
Open-end
spanner