THERMOJET
®
G3500E SERIES
OIL PURIFIER SYSTEM
INSTALLATION AND OPERATING MANUAL
Doc #
77740123
Rev
14
Date
June 2020
Page
18
of
104
Inlet and Return Oil Piping Connections
The oil inlet and outlet connection sizes are 1” FNPT. The user suction and discharge line sizes (either
schedule 40 (min) pipe or smooth I.D. hose) should be ¾” I.D. minimum and 2” I.D. maximum to ensure that
no flow restrictions will occur due to line lengths, high viscosity, etc. When processing high viscosity oils, the
larger sizes of pipe or hose should be used. If tubing is used, increase the diameter by at least one size. All
connections should be tight and free of air leaks.
If a flooded suction to the ThermoJet Oil Purifier is not practical, ensure that the suction height from the
reservoir drain to the inlet connection of the Thermo
Jet
is no more than 8 feet (2.4 meters) above the
minimum oil level in the reservoir.
If the suction lift exceeds 8 feet (2.4 meters), install a foot-valve or foot-pump to ensure that the suction
pump will prime and hold prime during long-term service.
Ensure that the oil return connection is above the oil level in the reservoir to prevent back flow and flooding
of the separation tank when the Thermo
Jet
is not operating. Return oil must be introduced into the
reservoir above the oil level to prevent siphoning when the Thermo
Jet
is not operating.
NOTICE:
Even very small air leaks can dramatically affect pump suction
performance.
Oil Inlet and Return
Connections
1” NPT
Oil Return
Connection
Oil Inlet
Connection
