THERMOJET
®
G-5700E SERIES
OIL PURIFIER SYSTEM
INSTALLATION AND OPERATING MANUAL
Doc #
77740153
Rev
1
Date
June 2020
Page
20
of
90
Inlet and Return Oil Piping Connections
The oil inlet and outlet connection sizes are 1-1/2” NPT and 1” FNPT respectively. The user
suction and discharge line sizes (either schedule 40 pipe or smooth I.D. hose) should be DIN 25 /
1” I.D. minimum and DIN 50 / 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.
NOTICE:
Even very small air leaks can dramatically affect pump suction
performance. If air bubbles are visible in the sight glass after flow is
established, re-tighten all suction connection points.