Thermo Scientific System IV, Installation, Operation, Basic Maintenance

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Electrical Requirements
The unit construction provides protection against the risk of electric
shock by grounding appropriate metal parts . The protection may not
function unless the power cord is connected to a properly grounded
outlet. It is the user's responsibility to assure a proper ground connec-
tion is provided.
Refer to the serial number label on the rear of the unit to identify the specific
electrical requirements of your unit.
Make sure the voltage of the power source meets the specified voltage, ±10%.
Voltage Selection
(60 Hertz Units)
If the unit is to be operated from a 220 to 240 volt source, a voltage selector
inside the unit must be reset. See Section V, Service and Maintenance, for
instructions on changing the voltage selection.
NOTE Units rated 380-415 volt do not have a voltage selection switch.
Plumbing
Requirements
The plumbing connections are located on the rear of the unit and are labelled
FACILITY WATER and RECIRCULATING WATER. FACILITY WATER connec-
tions are 1 inch nominal FPT. RECIRCULATING WATER connections are 1½
inch nominal FPT. See illustration on page 20.
Before installing the unit to an instrument that previously used tap water as a
cooling fluid, flush the instrument several times to remove any rust or scale
that has built up. The manufacturer of the instrument should be able to
recommend a cleaning fluid for their equipment.
Connect the FACILITY WATER SUPPLY to the cooling water source.
Connect the FACILITY WATER RETURN to the drain.
Connect the RECIRCULATING WATER SUPPLY to the inlet of the instru-
ment being cooled. Connect the RECIRCULATING WATER RETURN to the
outlet of the instrument being cooled.
Flexible tubing, if used, should be of heavy wall or reinforced construction.
All tubing should be rate to withstand 80 psi at +40°C. Make sure all tubing
connections are securely clamped. Avoid running tubing near radiators, hot
water pipes, etc. If substantial lengths of tubing are necessary, insulation
may be required to prevent loss of cooling capacity.