Packing The Housing; Installing The Methanizer/Air Cleanup Assembly - ABB PGC2000 Operation And Service Manual

8. 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.
9. 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.
9. Type 781 only: Install the two mounting brackets with four Phillips head screws. The mounting
brackets should be aligned parallel to one another.

Installing the Methanizer/Air Cleanup Assembly

1. Attach the Methanizer/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.
2. Connect the tube connections to their respective reducing unions while matching the numbers on
the temporary labels.
3. Remove the temporary tape labels.
4. Apply carrier and air to the Methanizer/Air Cleanup Assembly.
5. Using a liquid leak detection solution, test for leaks and make necessary repairs before
proceeding.
6. Route the heater harness in the oven interior, following the same path as the original harness
installation.
7. Connect heater one wires to J48E terminals 1 and 2, and connect heater two wires to J48E
terminals 5 and 6.
2000-OSM, F1 8-37