Operating instructions

MAINTENANCE
980076 08/26/03
4-9
PRESSURE REGULATOR
The pressure regulator serves only to hold locked up
water pressure at a preset point and to bypass this
water back to the water box.
To adjust:
1. With your unit running, close the cleaning tool.
Check the pressure gauge. Open the tool valve.
We recommend setting the pressure regulator
so that the pressure gauge reads 400 PSI with
the tool valve open.
When the tool valve is opened, there is an
approximate 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. Turning the knob
clockwise increases pressure, turning the knob
counter-clockwise decreases pressure.