NH3 Servo Signal Chopper Instructions

NH3 Servo Signal Chopper Instructions For Installation on Micro-Trak NH3 Plumbing Panels

(For use with GS-2 System)

1. Locate the NH3 Servo Valve 3-Pin W/P Shroud. See Illustration 1. 2. Disconnect the 3-Pin Connector. See Detail A in Illustration 1.

3. Install the Servo Signal Chopper Module between the male and female ends of the Servo Valve connectors. See Illustration 1.

Illustration 1

SERVO VALVE

DETAIL A

SHUTOFF VALVE

DETAIL A

LIQUIFIER SERVO SIGNAL CHOPPER MODULE

DETAIL B

P/N 13273

NH3 System Diagram after Servo Signal Chopper Module Installation 4. Locate the Shutoff Valve 3-Pin Connector. 5. Disconnect the 3-Pin Connector 6. Connect the Power Cable from the Servo Signal Chopper Module to the Connectors from the Shut-off Valve and Harness. See Detail B in Illustration 1. 7. This completes the Servo Signal Chopper Module Installation.

© 2009 P/N 50321 Rev A • Page 1

Servo Signal Chopper Instructions

Servo Signal Chopper Module System and Electrical Diagrams

TO MAIN HARNESS P/N 13273 SERVO CHOPPER NH3 POWER CABLE P/N 17921

TO SHUT-OFF VALVE

TO MAIN HARNESS P/N 13273

SERVO SIGNAL CHOPPER MODULE

TO SERVO VALVE

6.0 IN. 3-PIN A W/P B TOWER C

18 GA. WHT 18 GA. BLK 18 GA. RED

18 GA. WHT 18 GA. BLK 18 GA. RED

SERVO CHOPPER NH3 POWER CABLE P/N 17921

A 3-PIN B W/P C SHROUD

CABLE, SERVO CHOPPER OUTPUT P/N 21583-A

18 GA. BLK 18 GA. RED CABLE LENGTH 2.5 FT.

3-PIN A W/P B TOWER C

CABLE, SERVO CHOPPER INPUT P/N 21584-B

© 2009 P/N 50321 Rev A • Page 2

A 3-PIN B W/P C SHROUD

6.0 IN.

6.0 IN.