Zero/Span And Sample Solenoid Valve Replacement - Thermo Scientific 48i Instruction Manual

Servicing

Zero/Span and Sample Solenoid Valve Replacement

Zero/Span and Sample
Solenoid Valve
Replacement
7-26 Model 48i Trace Level-Enhanced Instruction Manual
6. Reconnect the pump cable to the AC PUMP connector on the
measurement interface board.
7. Connect a calibrated flow sensor at the SAMPLE bulkhead on the rear
panel.
8. Press to return to the Flow Sensor Cal screen.
9. At the Flow Sensor Cal menu, press
The Calibrate Flow Span screen appears.
10. Wait at least 10 seconds for the reading to stabilize, use
and to enter the flow sensor reading, and press
save the value.
11. Install the cover.
Use the following procedure to replace the solenoid.
Equipment Required:
Solenoid
Philips screwdriver, #2
Wrench, 9/16-inch
Equipment Damage Some internal components can be damaged by small
amounts of static electricity. A properly grounded antistatic wrist strap
must be worn while handling any internal component.
1. Turn instrument OFF, unplug the power cord, and remove the cover.
2. Unplug the solenoid electrical connector from the measurement
interface board.
3. Remove the Teflon® lines from the solenoid.
4. Remove both screws holding the solenoid to the rear panel, and remove
the solenoid.
to select Span.
to
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