Finish Thompson PFS ATEX VERSION (INCLUDES M6A, M6XA, M10X MOTORS & SPK) - Manual (Page 9)

Inspection
1. Check the housing cover (item 16), the impeller (item 15), and the impeller housing (item 13) for wear, rub-
bing, or damage from foreign objects. Replace if damaged.
Note: The double impeller design of this pump is dependant on the impeller working correctly. Any damage
to the impeller can cause pump failure.
2. Inspect the pump shaft (item 14) for wear in the bottom bearing (item 11) and the lip seal (item 4) areas.
Replace the shaft if needed.
3. Inspect the bottom bearing (item 11) for internal wear. Inspect all o-rings (items 8 &12) for nicks or chemi-
cal attack. Replace as needed.
4. Inspect the bearing assembly (item 3) for rust or corrosion.
5. If the bearing assembly needs to be replaced, unthread it from the shaft. Insert 3/32” pin into the hole at
the bottom and hold the bearing assembly by the half coupling. Turn the shaft counterclockwise (right
hand thread) to loosen and remove. If corroded, then a penetrating fluid may be used on the threads to help
loosen.
Note: Never reuse the lip seal.
Reassembly
1. Install new lip seal (item 4) into the pump head with the grooved side facing the bottom of the pump.
2. If bearing assembly is replaced -- thread the shaft (item 14) into the bearing assembly (item 3) with the 3/32
hole in the shaft on the other end. Carefully insert the shaft straight through the lip seal (to avoid seal dam-
age) from the top and seat the bearing assembly (item 3) into the pump head.
3. If o-rings are replaced -- install 2 inner tube o-rings (item 8) in the grooves. Install the impeller housing o-
ring (item 12) inside the top of the housing. Apply a small amount of Vaseline to the o-rings to aid in assem-
bly.
4. With the pump on a bench, slide shaft liner (item 10) into the inner tube (item 9) assembly onto the shaft
until it stops. Slide the shaft liner/inner tube/shaft assembly into the outer tube (item 7) using the shaft (item
14) as a guide.
5. Slide the impeller housing over the shaft, center the bottom of the lower inner tube into the counter bore in
the top of the impeller housing, and push / thread into the intake tube bottom (left hand thread).
6. Gripping the coupling at the top of the pump, thread the impeller on (right hand thread). Install the housing
cover (left hand thread). turn the coupling to verify there is no binding inside the pump.
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