Xylem G&L A-C 9100 Series, Инструкция по эксплуатации

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1. Outer guard
2. Inner guard
3. Attach the support bracket inline with the bolt
4. Support bracket
5. Nut
6. Lockwasher
7. Capscrew
8. Flat washer
9. Spacer washer
10.Option used instead of the spacer where overall guard length exceeds 12 in. (30 cm) or
the guard width is over 10 in. (25 cm) across the flats
11.Locate the support arm between the outer guard ends. Align the arm with holes in the
outer guard and holes in the saddle bracket.
12.Motor saddle bracket attached to the motor saddle
Figure 20: Hex guard exploded view for typical installation
6.6.4 Disassemble the pump with packing on shaft sleeve
See Parts list chapter for exploded view of the pump.
1. Close valves on suction and discharge sides of the pump. If no valves have been
installed, it will be necessary to drain the system.
2. Remove coupling guard and disconnect coupling. Refer to instructions on how to
remove the hex coupling guard.
3. Loosen the cap screws which secure the coupler flanges to the coupler hubs. Remove
the coupler flanges and sleeve by compressing the flanges and pulling out from
beneath the hubs or by loosening the allen set screws and sliding the hubs back on
the shafts. Remove the coupler hub from the pump shaft.
4. Drain the pump by opening the vent plug (0–910–0) and remove drain plugs (0–910–0)
on suction and discharge nozzle.
5. Remove seal lines (0–901–0, 0–950–0, 0–952–0), if supplied.
6. Remove gland bolts (3–904–9), washers (1–909–9) and slide gland (3–014–2) away from
casing.
7. Remove all casing main joint capscrews (2–904–1) and dowels (2–916–9). Use slot in
casing main joint and separate the casing halves with a pry bar. Lift upper half casing
(2–001–7) by cast lugs.
8. Remove packing (1–924–9) and seal cage (1–013–2) from each stuffing box.
9. Remove cap screws (1–904–9) which hold bearing housings (3–025–2) to the casing
and lift rotating element out of lower casing (2–001–08). Rotating element may now be
moved to a suitable working location.
10.Pull coupling half and key (3–911–2) off shaft (3–007–0).
NOTE: A spare rotating element can be installed at this point.
11.Remove cap screws (3–904–9) from bearing covers (3–018–3, 4).
12.Remove bearing housings (3–025–2), locknut (3–516–4), and lockwasher (3–517–4).
Mount bearing puller and remove bearings (3–026–2). Remove thrust washer (3–078–9)
and snap ring (3–915–9).
NOTE: Locknut, lockwasher, and thrust washer are not on inboard side.
IMPORTANT: Do not reuse the ball bearings.
13.Remove bearing covers (3–018–5, 4) and push oil seals (3–177–9) out of bearing covers
and coupling and bearing housing. Pull deflectors (3–136–9) off shaft.
14.Remove casing rings (3–003–9) from impellers (4–002–0).
15.Remove set screw (3–902–9) from shaft nuts. Remove shaft nuts (3–015–9), O-rings (3–
914–9), sleeves (3–009–9), sleeve gaskets (1–428–1), and impeller (4–002–0).
NOTE: Apply heat uniformly to the shaft sleeve to loosen the sealant between the shaft
and sleeve. DO NOT HEAT ABOVE 275°F. To further assist in removing the sleeves,
6 Maintenance
G&L Pumps Series A-C 9100 Base Mounted Centrifugal Pumps INSTRUCTION MANUAL 33