Specifications

Return Thermocouple
Heater
Supply Thermocouple
To Process
From Process
Cooling Water In
Cooling Water Out
Vent Line
Cooling
Valve
Relief
Valve
Cooling Heat
Exchanger
Pump
Isolated Circuit
NOTE: There is a 180˚ F operating temperature
limit on isolated circuit units.
Supply
Pressure
Gauge
Make-Up Line
Level
Sight Glass
Low Level
Switch
Manual Fill
and Vent Port
3 Gal. Reservoir
HOW IT WORKS:
I
SOLATED CIRCUIT
UGH015/0100 Thermolator TW-1 and TW-2
DESCRIPTION 2-5
Isolated Circuit models maintain the process temperature
by heating and cooling fluid for the process circuit. The
process fluid, which is stored in a reservoir, is isolated from
cooling water supplied by a chiller, tower or other source
A
B
The temperature of the
process fluid is measured
as it leaves the unit’s heater
tank. The fluid then flows
through the “To Process”
line to the mold or
process. The fluid returns to
the unit through the “From
Process” line for reheat-
ing or cooling.
1
A
B
C
D
If the process temperature
is below the setpoint, the
heater elements inside the
heater tank are energized.
E
4
The pump moves water
from the mixing tank to
the heater tank. Pressure
is measured after the
pump .
E
The temperature of
the process fluid is
measured as it flows
into the cooling tank
through the “From
Process” line .
2
B
If the temperature is
above the setpoint
value, the cooling valve
opens. Cool water
enters the cooling piping
and circulates through a
tube heat exchanger to
cool the process fluid.
C
G
The vent line allows warm
process fluid to expand to the
reservoir . The reservoir
supplies process fluid through
a make-up line as needed.
G
3b
3a