SECTION
4
BLUE
LINE THERMALWAVE
®
5M
37
PRESSURE REGULATOR
The pressure regulator holds water pressure at a
preset point and bypasses this water back to the
water box.
To adjust:
1. With the unit running, close the cleaning tool
valve. Check the pressure gauge. Open the tool
valve. Set the pressure regulator so that the
pressure gauge reads 350 PSI with the tool valve
open.
With the tool valve open, there should be a normal
drop of approximately 100-PSI, in pressure.
If the
drop is greater than 100 PSI, it may be
necessary to lubricate the pressure regulator o-
rings.
2. To adjust the pressure regulator,
turn the
adjusting knob (while observing the pressure gauge
on the control panel) until you reach the desired
pressure.
ADDING/DRAINING ENGINE
COOLANT
Use a 70:30 coolant to water ratio in this unit’s
cooling system.
1. To drain the coolant, remove the upper radiator
cap and turn the lower radiator draincock counter-
clockwise. Open the draincock on the heli-coil
assembly, until drained.
