Installing the heater jacket:

1. Start by removing the existing yoke assembly.

2. Unscrew the thumb screw at the bottom of the ammonia scrubber (AS) housing.

3. Place the thumb screw to the side for use on the new yoke assembly.

4. Using a 1/8" allen wrench, remove both shoulder screws threaded through the yoke arm.

5. Remove the existing yoke arm.

6. Place two of the plastic washers, used on the existing yoke assembly to the side for use on the new yoke.

7. Attach the supplied heater jacket around the AS shell using the hood and loop fastener strip.

8. Install the new yoke arm by placing one of the new spacers on the inside of the yoke arm between the AS top and the yoke arm.

9. Place one of the plastic washers, set aside from step 6, on the outside of the new yoke arm.

10. Thread a new shoulder bolt through the plastic washer, yoke arm hole and spacer into the AS top.

11. Repeat steps 8 thru 10 for the other side.

12. Reattach the thumb screw through the bottom of the new yoke arm.

13. Connect 120/240 VAC power supply lines to the power supply lines on the heater jacket.

14. Allow heater jacket to run for approx. 15-30 minutes before starting sample flow.

15. The heater is equipped with a thermocouple and thermostat to regulate the power requirements of the heater.

Note: When wiring for 240VAC operation. The white wire must be capped with a wire nut since voltage is present when heater is energized.