Prochem Apex GTX - Manual (Page 53)

51
Maintenance
Pressure Regulator
The pressure regulator serves to maintain water
pressure at a preset point and to bypass water back to
the water box.
To adjust:
1. With your unit running, close the cleaning tool
valve. Check the pressure gauge. Open the tool
valve. We recommend setting the pressure
regulator so that the pressure gauge reads 450
PSI with the tool valve closed.
When the tool valve is opened, there is an approxi-
mate drop of 100 PSI in pressure. If there is a
pressure drop greater than 100 PSI, it may be
necessary to lubricate the o-rings in the pressure
regulator.
2. If the pressure regulator requires adjustment, turn
the adjusting knob (while observing the pressure
gauge on the control panel) until the desired
pressure is obtained.
86341750 APEX GTX