ITT Goulds Pumps 3755, Инструкция по установке, эксплуатации и обслуживанию

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For oil lubricated bearings:
1. Follow steps 1 through 4 as for grease lubricated bearings.
2. Remove constant level oiler (251).
3. Turn down oil pipe (190). Remove drain plug and drained oil from oil reservoir in frame (228A).
4. Follow steps 5 through 12 as for grease lubricated bearings.
5. Using a suitable bearing puller, remove inboard ball bearing (168A).
6. Loosen set screw in oil thrower (248) and slide oil thrower off pump end of shaft. Inspect shaft
and bearings as directed in second paragraph of step 13.
7. To replace oil thrower (248), oil shoulder on shaft lightly and slide thrower on. Be sure that bev-
eled side faces coupling end of shaft. Slide thrower on shoulder but do not tighten set screw at
this time.
8. Replace ball bearings as directed in steps 15 and 16. Oil lubricated ball bearings are unshielded.
9. Slide thrower (248) up against inner race of inboard bearing (168A) and tighten set screw.
10. Completely assemble as in steps 17 through 33.
7.8 Replacing casing
1. Shut off and disconnect all piping including the seal piping if supplied.
2. Drain liquid from pump.
3. Unscrew nuts from studs (356) and remove suction cover (182) from casing.
4. Remove impeller nut (304) and impeller washer (199) from shaft.
5. By use of a suitable puller similar to that shown if Figure 10: Impeller puller on page 28 , pull im-
peller from shaft. (Puller must push against shaft as shown. Do not use a type that pulls from
casing). All impellers are provided with two tapped holes to facilitate use of puller.
6. Remove stuffing box gland (107).
7. Unscrew hex head machine bolts (370B) and remove casing from frame.
8. Remove old packing and lantern ring from stuffing box. Discard old packing but replace lantern
ring on shaft sleeve.
9. New casings are supplied with wearing ring if design requires it.
10. Place new casing in position on frame, insert and tighten hex bolts (370B).
11. Oil shaft and key.
12. Slide impeller on shaft and key as far as possible.
13. Using a soft metal hammer, tap evenly on center of impeller until shaft threads protrude beyond
impeller.
14. Push impeller on the remaining distance with impeller nut (304) and washer (199). Check impel-
ler location per chart in Table 4: Impeller locating table on page 35 .
15. Replace suction cover (182), gasket, (351) and nuts on studs (356).
16. Connect all piping.
17. Repack stuffing box as directed in
3.3 Stuffing box on page 18 .
18. Start pump as directed in
Starting Pump.
7.9 Spare parts
To ensure against possible long and costly down-time periods, especially on critical services, it is advisa-
ble to have spare parts on hand.
7.8 Replacing casing
36 Model 3755 Installation, Operation, and Maintenance Manual