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1. Turn unit off. Locate the external relief valve. Loosen the
locknut. Turn the threaded stem all the way in (clockwise).
This manually closes the valve by setting it to an infinite
value.
2. If the unit is not plumbed to an application, install a loop of
hose between the supply and return fittings. Turn unit on.
NOTE: The external relief valve may drip
while the locknut is loose. This is normal.
3. CFT units: Crimp the loop of hose flat using a pair of vise-
grips. HX units: Turn flow control valve completely clockwise
if a round handle, or fully - if a lever handle. The pressure
gauge should rise to a high value. It is now indicating the
internal relief valve setting.
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