810-050.2
Operator Manual
4
4
Field Adjustment of Pressure Switch
The pressure switch can be field set to accommodate local circumstances or preferences. The switch
comes preset from our factory and should only be changed if you are encountering problems. Before
changing any settings on an HTI System, run the body maker until the oil is at the normal operating
temperature (typically between 100-120°F).
1.
Turn filter system on and allow oil to fill the canister while venting the air
through the bleed cock on the canister lid.
2.
As soon as fluid flows from bleed cock, close and secure.
3.
Slowly close the outlet hose ball valve until the system pressure is at 55-58 PSI as
shown on the pressure gauge atop the canister.
4.
Remove clear cover of pressure switch.
Rotate yellow ring to ‘UNLOCK’ position.
Adjust the set point by rotating the SET ring until the LED illuminates. The RESET
ring should be set 5 PSI below the level of the SET ring. Place the cover back on the
switch and open the ball valve to restore full flow to the filter. The filter pump and
safety relief valve will start to bypass oil internally at 60 PSI so setting the pressure
sensor higher will defeat the purpose of informing the operator of a pending filter
change out.
NOTE: Do not attempt to reduce or increase the operating pressure by adjusting the internal
pressure relief valve on the pump. This safety devise has been set and locked into place at the
factory. Attempting to adjust the pressure setting screw can jam the relief valve and prevent proper
movement. Improperly removing the acorn nut may also result in air leaking into the system, which
will require frequent system bleeding until the acorn nut seal is replaced.
