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Operation
The rupture disk monitors the pressure inside the
chiller. If the pressure exceeds the disk's burst setting,
the disk ruptures, allowing the chiller pressure to enter
the valve holder compartment upstream of the relief
valve. If the pressure is above the pressure setting of
the relief valve, the valve will open, allowing only the
amount of refrigerant to escape to keep the pressure
within safe operating limits.
The excess flow valve maintains the downstream side
of the rupture disk at atmospheric pressure to assure
proper operating conditions for the disk. When the disk
bursts, the rapid pressure increase causes the excess
flow valve to seal and the valve holder area becomes
pressurized.
22
A disk rupture will be indicated by a pressure reading
on the gauge and the pressure switch contacts will
close. The pressure switch is an optional accessory
(see components figures in
It is recommended that the RuptureGuard™ be visually
inspected.
The vent line drip leg must be periodically checked for
accumulation of water or refrigerant. Drain any
accumulation that may be present into an evacuated,
properly labeled vessel and dispose of in accordance
with local, state and federal codes.
"Overview," p.
7).
CTV-SVX06J-EN
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