THERMOJET
®
H-2500E SERIES
OIL PURIFIER SYSTEM
INSTALLATION AND OPERATING MANUAL
Doc #
77740119
Rev
15
Date
June 2020
Page
47
of
100
Oil Filter Maintenance
Check the inlet pump discharge and filter discharge pressure gauges for the pressure loss between the
two readings. If the pressure loss is approaching 25 PSID (1.7 BAR), the filter element is plugged and
must be changed. The filter element should be changed when the pressure loss is 25 PSID (1.7 BAR)
To change the filter element, first shut down the ThermoJet. See the section titled
Shut Down Procedures
on how to turn the ThermoJet Oil Purifier OFF.
Remove the vent plug located on top of the filter housing to prevent the siphoning of oil out of the heater
tube.
Open the drain valve at the bottom of the filter housing and allow the oil to drain into a suitable container.
Turn the locking ring on the filter housing counter-clockwise using the supplied wrench that is attached to
the filter housing until the housing is loose. Drop the filter housing down from the filter head. Clean the
interior of the filter housing by use of a safe solvent and/or wiping with a lint free cloth. Install a new oil filter
(p/n 1910-3006) and O-ring (p/n 4051-1031).
Reinstall the filter housing and using the spanner wrench to tighten and secure the filter housing with the
lock-nut.
Reinstall the vent plug on top of the filter housing and ensure that the drain valve on the botto of the filter
housing is closed.
See the sections of this manual titled
Cleaning and Decontamination
and
Removal from Use, Disposal and
Transport
for additional information.
Filter Vent Plug is
located on the top of
the oil filter head
Use spanner wrench
to remove locking ring
Remove filter sump
and replace element
