Installing The Air Cleanup Tubes; Packing The Housing; Installing The Dual Air Cleanup Assembly - ABB PGC2000 Operation And Service Manual

Installing the Air Cleanup Tubes

1. To install an air cleanup tube, insert the short end of the catalytic air tube through the larger tube
passage of the body and align it with the inside air inlet port connection of the top cap.
2. Insert the tube fitting into the cap and tighten the inlet fitting nut finger tight.
3. Repeat steps 1 and 2 for the second air cleanup tube, if applicable.
4. Assemble the flat washer and screw.
5. Insert the flat washer retaining screw assembly into the center hole located in the end of the body
assembly opposite the harness and tighten it with the Phillips screwdriver.
6. If a new tube is being installed, a small loop or "pig tail" should be coiled in the tubing to
compensate for the excess tubing length. If installing an existing tube, the pig tail will already be
present.
7. Bend and position the coiled tubing such that the end fitting can be inserted into the
corresponding air or methanizer outlet connection port located on the bottom of the top cap.
8. Tighten all inside catalytic tube inlet and outlet fittings, using a 1/4-inch open-end wrench.

Packing the Housing

1. Pack a small amount of insulation around the probes, thermocouple, heater, and associated
wiring of the body assembly and set the assembly aside.
2. Using a 9/64-inch Allen wrench, loosen and remove the four Allen head screws attaching the air
cleaner/methanizer bottom cap to the outer housing. Separate and set the bottom cap aside.
3. Carefully insert and press the body assembly into the outer housing.
4. Align the top cap with the marks on the outer housing. This will align the mounting bracket holes
in the top cap.
5. Install the four Allen head screws that secure the top cap to the outer housing and tighten with a
9/64-inch Allen wrench.
6. Place a small quantity of insulation into the housing cavity and gently pack it down using an
object such as a screwdriver. Continue adding and packing in insulation until the cavity is filled,
taking care not the damage any wiring.
7. Install the bottom cap, aligning the mark on the cap with the mark on the housing. This will align
the bottom mounting bracket holes.
8. Install the four Allen head screws to secure the bottom cap to the housing, and tighten with a
9/64-inch Allen wrench.

Installing the Dual Air Cleanup Assembly

1. Attach the Dual Air Cleanup Assembly to the interior of the isothermal oven wall. Secure the air
cleanup/methanizer with your hand while installing the four Phillips head screws through the
support bracket holes and into the mounting holes located in the isothermal oven back interior
wall.
8-74 2000-OSM, F1