Component Maintenance Required Frequency Check
Relief valve -
maintenance
and testing
The relief valve manufacturer requires that under normal
operating conditions a “try lever test” must be performed
every two months.
Under severe service conditions, or if corrosion and/or
deposits are noticed within the valve body, testing must be
performed more often. A “try lever test” must also be
performed at the end of any non-service period.
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 appliance 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 appliance. This is particularly
important when your system contains treatment chemicals
or glycol solutions. If the system employs plain water, the
combi boiler auto fill valve must be turned on in order to
recharge the lost fluid.
Annually
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