THERMOJET
®
G3500E SERIES
OIL PURIFIER SYSTEM
INSTALLATION AND OPERATING MANUAL
Doc #
77740123
Rev
14
Date
June 2020
Page
37
of
104
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 240 PSIG (16.5 BAR). 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 210-240 PSIG (14.5-16.5 BAR).
A pressure relief valve is installed on the inlet side of the oil filter. The relief valve is factory set at 290 PSIG
(20 BAR). If the oil pressure will not reach 240 PSIG (16.5 BAR) the relief valve may have operated and
opened. See the trouble shooting section of this manual for additional information.
NOTICE:
Wear appropriate personal protective gear.
Surfaces are HOT
WARNING
Check oil filter discharge pressure
Use the adjust the screw to
change the oil pressure setting
Monitor oil pressure at the oil filter inlet
pressure gauge while adjusting the
pressure control valve (PCV)
