Maintenance for Relief valve Frequency Check
Test at or near the maximum operating pressure by holding the test lever fully
open for at least 5 seconds to flush the valve seat free of sediment and debris.
Then release the lever and allow the valve to snap shut.
If the lever does not activate, or if there is no sign of discharge, discontinue use of
equipment immediately and contact a licensed contractor or qualified service
personnel.
If the relief valve does not completely seal, and fluid continues to leak from the
discharge pipe - perform the test again to try and flush any debris that may be
lodged in the valve. If repeated tries fail to stop the leakage, contact a licensed
contractor or qualified service personnel to replace the valve.
While performing a “try lever test”, a quantity of heat transfer fluid will be
discharged from the piping system and the system pressure will drop. This fluid
must be replaced. To refill and pressurize your system, we recommend using a
system pressurization unit such as an Axiom Industries model SF100 series.
Capture the discharged fluid in a container and recycle it by returning it to the
system feeder unit. This is particularly important when your system contains
treatment chemicals or glycol solutions. If the system employs plain water, the
boiler auto fill valve must be turned on in order to recharge the lost fluid.
Annually
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