THERMOJET
®
G-3700E SERIES
OIL PURIFIER SYSTEM
INSTALLATION AND OPERATING MANUAL
Doc #
77740151
Rev
03
Date
June 2020
Page
38
of
111
Adjusting System Pressure
The pressure control valve (
PCV1
) downstream of the Oil Heater is factory set at 16.5 BAR (240
PSIG) at the heater process temperature of 82
o
C (180
o
F). Initially, the filter inlet and outlet
pressures will vary due to higher oil viscosity at start-up.
Once the oil temperature approaches the normal operating range, the pressure will return to the
normal operating setting of approximately 16.5 BAR (240 PSIG). Slight adjustment to the
operating pressure may be necessary. If the pump discharge pressure is too low, adjust
PCV1
by
turning adjustment screw clock-wise to increase the oil pressure and c-clockwise to decrease the
oil pressure setting. Once adjusted, the filter discharge pressure range should be 14.5-16.5 BAR
(210-240 PSIG).
A pressure relief valve is installed on the inlet side of the oil filter. The relief valve is factory set at
18.6 BAR (270 PSIG). If the oil pressure will not reach 16.5 BAR (240 PSIG) the relief valve may
have operated and opened. See the trouble shooting section of this manual for additional
information.
Monitor oil pressure at the oil filter inlet
pressure gauge while adjusting the
pressure control valve (PCV)
Check oil filter discharge pressure
Use the adjust the screw to change
the oil pressure setting
