INSTALLATION, OPERATION AND MAINTENANCE MANUAL – COSA
9610™
23 | Page
1.9 System maintenance
Maintenance and installation are performed by trained personnel only. Please contact COSA Xentaur
for the maintenance schedule.
Regular Maintenance
Drain the protection system regulator frequently and clean system with nonsolvent cleaning agents
only.
Long-Term Maintenance
Calibrate the enclosure pressure indicator to 0 inches by venting the purge pressure reference port
and the protected enclosure to atmosphere and adjusting the calibration screw in the lower center
portion of the indicator’s face.
Fully open the enclosure pressure control regulator, to blow out any deposits around the tip of the
valve and to ensure that the enclosure protection vent is operating properly, then carefully readjust
system according to the set-up procedure and operating sequence on pages 16 and 17 of “X-Purge
Installation and Operation Manual”. Replace or tighten stem packing nut as required to prohibit stem
packing leakage.
.
Carefully disassemble the enclosure protection vent by loosening the two bottom hex nuts that hold
the unit together.
(DO NOT REMOVE CAP NUTS ON TOP OF VENT BODY)
Carefully clean the flapper valve and vent body seats with warm soap and water, being careful not to
extend the vent valve beyond its normal opening point and being careful not to exert any stress on
the valve hinge.
Examine the entire protection system and the protected enclosure and replace any defective parts
during routine shutdown of the protected enclosure(s). Parts are available from Pepperl+Fuchs on
immediate notice as required.
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