Thermo Scientific System IV, Установка, эксплуатация, базовое обслуживание

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Filling Requirements
Remove the top access panel and locate the reservoir. Fill the reservoir with
cooling fluid to within one inch of the top. Since the reservoir capacity is small
compared to the volume of the circulating system, keep extra cooling fluid on
hand until the circulating system is full.
Auto Refill
Device (Optional)
The automatic refill device maintains the correct level of cooling fluid in the
reservoir. The device consists of a float switch in the reservoir and a solenoid
valve at the rear of the unit. If the cooling fluid level falls, the float switch will
drop, opening the solenoid valve and allowing make-up fluid to fill the reservoir.
Once the cooling fluid reaches the proper level, the float switch will rise and the
solenoid valve will close.
NOTE:
For the solenoid valve to close properly, the minimum supply flow rate
should be 2.2 gallons per minute.
Connect the
3
/
8
inch OD stainless steel barbed fitting on the solenoid valve
to the make-up fluid source using
5
/
16
or
3
/
8
inch ID flexible tubing.
Tubing is available from Thermo Fisher. Contact our Sales Department for more
information (see Preface, After-sale Support).
Flow Control
The RECIRCULATING FLOW CONTROL handle is connected to a three-way
valve that controls the flow of the cooling fluid to the instrument being cooled.
The handle is located on the front of the unit.
When the handle is in the “+” position, the valve is open and all available
cooling fluid is supplied to the instrument being cooled. When the handle is
in the “0” 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 the
flow meter to adjust the desired flow rate.
The gauge next to the flow control handle indicates the operating pressure.
Auto Restart
Units are equipped with an auto restart feature. If power is lost, the unit will
automatically restart when power is restored. This feature is enabled/
disabled using the controller's Tune Loop, see page 13.