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Flow ControlFlow Control
Flow ControlFlow Control
Flow Control
The flow control handle is connected to a valve that controls the flow rate of
the cooling fluid to the instrument being cooled. The handle is located on the
right side of the unit and is labelled RECIRCULATING FLOW CONTROL.
When the handle is in the “+” position, the valve is open and all possible
cooling fluid is supplied to the instrument being cooled. When the handle is
in the “-” position, the valve is closed and no cooling fluid is supplied to the
instrument being cooled. When the handle is between these two positions,
the flow rate of the cooling fluid is between full flow and no flow. Use a flow
meter on the SUPPLY line to adjust the desired flow rate.
Never “crank” the valve wide open from the closed or slightly openNever “crank” the valve wide open from the closed or slightly open
Never “crank” the valve wide open from the closed or slightly openNever “crank” the valve wide open from the closed or slightly open
Never “crank” the valve wide open from the closed or slightly open
position.position.
position.position.
position.
Pressure GaugePressure Gauge
Pressure GaugePressure Gauge
Pressure Gauge
Units with a PD-1, PD-2, or any TU type pump are equipped with a pressure
gauge. Refer to the pump identification label on the rear of the controller to
identify the specific pump in your unit. The RECIRCULATING PRESSURE
gauge is located next to the flow control handle. The gauge indicates the
operating pressure of the system.
Flow Control Valve
RECIRCULATING PRESSURE gauge
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