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ML442 | v5k
Expo Technologies UK
T: +44 (0) 20 8398 8011
Expo Technologies US
T: +1 (440) 247 5314
Expo Technologies China
T: +86 532 8906 9858
Is the Pressurized
Enclosure
pressure too
high?
Is there debris on
the RLV disk
allowing air to
leak from the
valve?
Relief Valve opens
continuously or
intermittently.
Call Expo
Remove the RLV cover
and clean the valve
disk. If it is necessary to
remove the disk and
spring from the RLV,
draw a line around it
with a pencil to allow
accurate replacement
before removal,
otherwise the opening
pressure may be
affected.
The Flow Control Valve
(FCV) is too far open.
Adjust the FCV
clockwise to reduce the
PE pressure
No
Yes
No
Yes
