RKI Instruments GD-K7D2 (115 VAC) User Manual
Page 22
18 • Model GD-K7D2 (115 VAC) Sample Draw Transmitter
4.
Place the GD-K7D2’s ON/OFF switch in the OFF position.
5.
Loosen the thumbscrew on the front of the housing cover, then remove the cover from
the detection unit and installation bracket.
6.
Rotate the clear plastic cover on the right side of the detection unit towards you to
allow access to the amplifier and sensor.
7.
A metal snap-in bracket holds the sensor in place. While facing the GD-K7D2, push
this bracket to the left until it releases the sensor.
8.
Gently push the sensor back, away from the sample cup, and slide it out of the right
side of the detector unit with the amplifier cable still connected to the amplifier. The
amplifier is attached to the sensor and will come out with the sensor.
9.
Disconnect the amplifier cable from the amplifier. Gently pull on the connector to
disconnect it.
10. Remove the retaining screw near the top of the amplifier that holds the amplifier to
the sensor.
11. Disconnect the sensor connector at the bottom of the amplifier from the sensor by
gently pulling the bottom of the amplifier away from the sensor.
12. Install the amplifier onto the new sensor with the sensor connector and retaining
screw.
13. Connect the amplifier cable to the amplifier.
14. Reinstall the sensor into the sample cup.
15. Reinstall the sensor retaining bracket.
16. Reinstall the clear plastic cover on the right side of the detection unit.
17. Reinstall the GD-K7D2 cover.
18. Turn on power to the controller and turn on the controller.
19. Turn on the 115 VAC power source to the GD-K7D2 and place the ON/OFF switch in
the ON position.
20. Calibrate the sensor as described in the Calibration section.
Replacing the Pump
1.
Turn off the controller.
2.
Turn off power to the controller.
3.
Turn off the 115 VAC power source to the GD-K7D2.
4.
Place the GD-K7D2’s ON/OFF switch in the OFF position.
5.
Loosen the thumbscrew on the front of the housing cover, then remove the cover from
the detection unit and installation bracket.
6.
Loosen the captive screw in the lower left front of the detection unit that secures it to
the installation bracket.
7.
Pull the detection unit away from the installation bracket until the main board
disengages from the socket, then lift it up slightly to free the detection unit from the
installation bracket.
8.
A metal snap-on bracket holds the pump in place. A tab on the bracket is accessible on
the right side of the detector unit. Push the bracket tab back and away from the pump
until the bracket snaps back and releases the pump.