STRAINERBACKW-A Strainer, Backwash - Annual

                                                      Man Hours 60
Special Instructions:

1.  Review manufacturer's instructions.
2.  De-energize, tag, and lock out electrical circuit.

Items to Check & Initial Completion:

1. ___ Close inlet and outlet valves.
2. ___ Drain backwash.
3. ___ Install hoist and remove lid bolts.
4. ___ Remove wiring harness and shaft hex nuts.
5. ___ Lift cover flange.
6. ___ Remove tube support rod nuts and tie bar.
7. ___ Individually remove tubes and acid/detergent clean each tube.
8. ___ Clean inner casing and tube sheet.  Inspect for pits and cracks.
9. ___ Remove side inspection plate and clean bottom sump.
10.___ Inspect arm assembly and bolt flange.
11.___ Inspect cutless bearing, bearing housing, set screw, shaft coupler bolt
       and nut, shaft, and distributor barrel seat.
12.___ Install tubes, rod nuts, and tie bars.
13.___ Replace shaft gasket.
14.___ Inspect main shaft, bearing housing, set screw, cutless bearing, drive
       shaft bearing, and the stud and nut (upper unit).
15.___ Replace gasket for main cover.
16.___ Install cover lid and bolts.
17.___ Replace packing and inspect gland bolt.
18.___ Replace two "O" rings on upper shaft.
19.___ Inspect thrust bearings and replace if necessary.
20.___ Replace shear key and install hex nuts.
21.___ Drain oil from gear case and replace.
22.___ Install wiring harness and lubricate motor if necessary.
23.___ Check all starting relay contacts and wire connections.
24.___ Start backwash; observe rotation and arm movement through inspection
25.___ Clean half inch tubing and flange for pressure gauge.
26.___ Secure unit and install inspection plate.
27.___ Close drain valve and open inlet and outlet valves.
28.___ Start backwash and adjust packing.
29.___ Inspect unit for leaks.
30.___ Touch up rusted and corroded areas with rust inhibitor and paint.
31.___ Clean up work site.

Tools and Materials:

1.  Standard Tool Kit
2.  Lubricants.  Consult the Material Safety Data Sheets (MSDS) for hazardous
    ingredients and proper personal protective equipment (PPE).
3.  Cleaning equipment and materials.  Consult the MSDS for hazardous ingredients
    and proper PPE.
4.  Multimeter
5.  8 foot ladder.  Check ladder for defects. Do not use defective ladders.
6.  Chain or cable hoist
7.  Rust inhibitor and paint.  Consult the MSDS to ensure that the paint lead
    level is 0.06% or less and proper PPE.

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