THERMOJET
®
H-2500E SERIES
OIL PURIFIER SYSTEM
INSTALLATION AND OPERATING MANUAL
Doc #
77740119
Rev
15
Date
June 2020
Page
15
of
100
Principal of Operation
The ThermoJet Oil Purifier works on the principal of air stripping. The use of air bubbled through
contaminated liquids has long been used to remove contaminants. But the use of this technique was
restricted because the volume of gas required was large due to limited mixing of the gas with the
liquid. The unique technology embodied by the ThermoJet
makes air stripping practical and efficient
because of the mixing and intimate contact of the air with the fluid being cleaned. In addition, the
ThermoJet
utilizes the principal that the capacity of air to entrain moisture increases exponentially
with temperature.
The ThermoJet is designed to operate on ISO 32 through ISO 220 oils from circulating oil systems. Oil with
higher viscosity (ISO 150 and ISO 220) must be at 40
o
C (100
o
F) minimum temperature at the inlet to the
ThermoJet during start-up.
Dewatering
The ThermoJet
®
removes dissolved and emulsified water from industrial lubricants. The ThermoJet
returns the viscosity of the lube oil and restore it to like new levels. No longer is there a need to dispose
of water laden lube oils; these oils can be purified and reused.
Flow through the Unit
The suction pump of the ThermoJet
draws contaminated oil from the user lube or hydraulic system.
Flexible hose or hard piping can be used to connect the ThermoJet
to the system reservoir. A one and
one half horsepower motor drives the suction pump. The suction pump is protected by a “Y” strainer.
From the pump the oil passes through a filter. This cartridge filter can be easily replaced. It is
recommended replacement be made when the pressure differential across it, as monitored by two
easily read gages which are externally mounted on the panel above the access door, reaches 30 PSI
( 2 BAR). From the filter the oil passes through the heater that elevates the oil to 180° F (82° C).
The electric heater temperature is set and controlled with a solid-state temperature controller whose
operation is viewed through a window on the electrical control box. After the heater, the oil passes
through the heart of the ThermoJet, the dual stage jet mixer
The Jet Mixer
This proprietary and uniquely designed device is the heart of the system. Without the aid of secondary
pressure, it continuously and automatically draws ambient air into the heated oil stream as delivered to
it by the inlet pump. The ambient air becomes intimately mixed with the oil and assumes the temperature
of the oil and absorbs water from the oil. The oil leaves the Jet Mixer and is directed to the separation
vessel that operates at atmospheric pressure. Here the moisture laden air expands and leaves the oil
thus cleansing the oil of water.
Return of Clean Oil
In the separation vessel the oil from the jet mixer cascades down trays to promote the release of the
water laden air. A volume of oil is maintained in the lower portion of the separation vessel to allow any
entrained air to leave the oil so that none is contained in the return oil stream. The second close
coupled pump driven by the electric motor returns oil to the user reservoir. Water vapor vents from
the separation vessel and travels through a filter and oil absorbing media to insure that discharge from
the unit is oil free. The water condensate discharged from the ThermoJet
can be piped to a sanitary
sewer.
Mounting Options
The ThermoJet Model H2500
Oil Purifier is offered in two different mounting configurations so that the unit
can best fit client requirements. All series units are available as base mounted with lifting eyes. See the
H2500E Model Code sheet for additional mounting options.
