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

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gasket material on the casing joint and mark it by pressing it against the edges of the
casing. Trim the gasket so that it is flush with the inside edges of the casing.
1. Place impeller key (3–911–1) in shaft (3–007–0).
2. Check the impeller (4–002–0) and casing to determine the correct impeller rotation
and locate the impeller on the shaft per dimension “A” given in “Dimensions” table.
NOTE: For impellers with replaceable rings, heat each new ring (4–004–9) and slide it
onto the impeller. Hold the rings against the impeller shoulder until they cool.
3. Place both shaft sleeve keys (3–911–3) an shaft (3–007–0).
4. Slide sleeve gaskets (1–428–1) onto shaft and against hub of impeller.
5. Slide sleeves (3–009–9) onto shaft.
6. Place the sleeve O-ring (3–914–9) onto the shaft, into the sleeve counterbore. Verify
that Dimensions “A” is maintained. Using a pin spanner wrench and hammer, securely
tighten the shaft sleeve nuts (3–015–9). Then, drill a shallow recess in the shaft through
the set screw hole in each of the shaft nuts. Lock each shaft sleeve nut in position with
cup point set screws (3–902–9). A low strength sealant, such as Loctite 271, can be
used to retain set screws.
7. Assemble casing rings (3–003–9). See figure for adjustable rings.
8. Start heating bearings (3–026–2) so that they will be ready when called for in the next
step. Use dry heat from induction heat lamps or electric furnace, or a 10–15% soluble
oil and water solution.
IMPORTANT: Do not exceed 275°F.
These are precision, high-quality bearings. Exercise care always to keep them clean
and free from foreign matter.
9. Assemble oil seal (3–177–9) in each bearing cover. Install gaskets (3–409–9) on each
bearing cover.
NOTE: Seal lip or pressure side of oil seal must point towards the ends of the shaft that
the oil seal is assembled on. See oil lubricated bearings. See figures 18 and 19 to show
a grease lubricated bearing housing and an oil lubricated bearing housing,
respectively.
10.Slide deflectors (3–136–9) and bearing covers (3–018–3, –4) on the shaft. Install snap
rings (3–915–9). Install thrust washer (3–078–9) on the outboard end. For ease of
assembly and protection of rubber parts while sliding parts onto shaft, cover O-ring
groove, keyways, and threads with electrical tape.
NOTE: Inboard bearing cover (3–018–3) is approximately 1/4 inch less in width than
the outboard bearing cover (3–018–4). This is the only dimensional difference.
11.Press heated bearing (3–026–2) on shaft against snap ring or thrust washer. Install
locknut (3–516–4) and lock washer (3–517–4) on outboard end. Make certain the
locknut is secured and then bend over tab on lock washer.
12.
Condition Action
Pumps with grease lubrication Cool bearings at room temperature and coat with 2
ounces or 3 ounces of a recommended grease.
Pump with oil lubrication Refer to instructions for installation of oil lubricated
parts.
13.Assemble oil seals (3–177–9) in each bearing housing. Refer to NOTE under number 9
for direction of oil seal.
14.Slide bearing housings (3-025-2) onto shaft (3-007-0) over bearings (3-026-2)
15.Assemble bearing cover to bearing housing with two capscrews (3–904–9).
16.Replace pump coupling half and key (3–911–2).
17.Assemble rotating element in lower half casing (2–001–8). Correctly locate casing ring
pins (3–943–9) in casing main joint slot.
6 Maintenance
G&L Pumps Series A-C 9100 Base Mounted Centrifugal Pumps INSTRUCTION MANUAL 39