Delta NANOTRACE DF-745 Instruction Manual download pdf (Page 32)

28 DF-745 Options

5.6.2 Moisture Sample Gas Outlet Connection to Vacuum Pump

The sample gas outlet connection is a ¼ inch compression fitting labeled Moisture Sensor

Outlet as shown in Figure 4 and Figure 5. Use the polyethylene tubing provided with the

analyzer to connect between the outlet fitting and the ¼ inch fittings on the needle control

valve and vacuum pump (included separately). See Figure 11. Open the needle control

valve completely.

NOTE: If the Hydrogen Service Safety System is included, the sample outlet line must be

made of steel. See page 89 for additional information.

5.6.3 Electrical Connections

Plug the vacuum pump power cord into the vacuum pump power receptacle on the rear of

the analyzer. Turn on the vacuum pump power breaker that is adjacent to the receptacle.

The pump will not turn on until the main analyzer power switch is turned on. See Figure 14.

NOTE: The voltage supplied at the vacuum pump power connector is the same as the input

voltage to the analyzer. For example, if 110VAC is supplied to the analyzer then 110VAC is

supplied to the pump.

CAUTION

Be sure the pump outlet is at atmospheric pressure before starting.

The pump is not designed to start against any backpressure.

VACUUM PUMP AC POWER OUT

VACUUM PUMP ON/OFF

Figure 14: Vacuum Pump Power Connections and Controls

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Delta NANOTRACE DF-745 Instruction Manual Page 32