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Bypassing Pumpout Flow Restrictor
THE PUMPOUT FLOW RESTRICTOR MAY BE TEMPORARILY BYPASSED TO
ACCELERATE THE REMOVAL OF NON-CONDENSABLE WHEN LARGE AMOUNTS OF
NON-CONDENSABLE ARE PRESENT. (TYPICALLY AFTER CHILLER REPAIRS.)
NOTE:
This is a manual procedure that will reduce the efficiency of the purge and
should be used only during certain service conditions.
TO BYPASS THE PUMPOUT FLOW RESTRICTOR:
TEMPORARILY CONNECT A BYPASS HOSE BETWEEN THE BRANCH TEE ON TOP OF
THE PURGE TANK AND THE BRANCH TEE AT THE INLET OF THE PUMPOUT
COMPRESSOR.
NOTE
: To minimize refrigerant loss; as soon as practical, the bypass hose should be
removed and the purge returned to normal operation.
The following section outlines a few select "Service Tips" for helping the chiller operator get
the most from the wealth of purging and operational information stored in the microprocessors
data base. While the following discussion is not intended to be all inclusive, it does however
serve to illustrate how various data and combinations of data may be used by the operator for
managing a chillers refrigerant charge.
Moisture monitor
If there is excessive moisture within the chiller refer to the maintenance section under
Moisture Monitoring on page 47).
Air-Leak Rate
The rate at which air may be leaking into the chiller can be determined by monitoring the
"Purge pumpout time for the last 24 hours" and the "Purge 30 -day average pumpout time."
Example
: A gradual but steady increase in purge activity would typically indicate a
worsening leak condition such as deteriorating gaskets and/or "O" ring seals.
Example
: A sudden marked increase in purge activity (especially as indicated by the
"Purge pumpout time in the last 24 hours") mi ght suggest a line such as a gauge line has
broken or possibly the rupture disc may have cracked. If the chiller had been serviced or
repaired during the previous 24 hour period it might indicate that a leak may have been
inadvertently created during servicing.
Summary of Contents for Redi-Purge PRG-113-C3
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