Servomex NanoTrace DF-760E, Instruction Manual

Page: 42 / 182

38 DF-760E 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. 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 8.
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 173 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
11.
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.
Figure 11: Vacuum Pump Power Connections and Controls
GND
RLY5-NC
RLY6-COM
RLY6-NO
RLY6-NC
RLY5-COM
RLY5-NO
KEY
5 5 RLY4-COM RLY2-COM
RLY1-COM
RLY1-NO
RLY1-NC
KEY
4 4 RLY3-NC
1
2
3
KEY
3
2
1 RLY3-COM
RLY3-NO
RLY2-NO
RLY2-NC
GND 8
6
7
GND 8
7
6 RLY4-NO
RLY4-NC
5 5
4 KEY 4
1
2
3
1
2
3
RLY7-COM
8 GND 8
6
7
6
7 RLY8-NC
RLY8-NO
RLY8-COM
RLY7-NC
RLY7-NO
RX+
TX+
3
2
1 4-20mA-
4-20mA+
3 3
1
2
1
2
4-20mA-
4-20mA+
TX-
GND
RX-
KEY
7
8
5
4
6
AOUT+
GND
KEY
AOUT-
8
7
6
4
5
KEY
GND 8
7
6
4
5 AOUT-
AOUT+
~
~
~
~ ~
~
AC INLET
VACUUM PUMP AC POWER OUT
VACUUM PUMP ON/OFF