Xylem GOULDS AC8743, Инструкция по эксплуатации

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28
Figure 29: Casing Main Joint
27. Locate the upper half of the casing into place
using the tapered dowel pins and install the
casing main joint bolts. See Figure 29. The
casing joints should be tightened to the
following torques: 140 ft.-lb. minimum for 5/8"-
11 hex head cap screws (Grade 5); 350ft.-lb.
minimum for 7/8"-9 Ferry Cap Counterbore
screws (Grade 8). Bolt torquing pattern is
shown in Figure 12.
NOTE: Torque values are essential in obtaining
proper gasket compression so no leakage can
occur at the main joint.
28. Rotate the shaft by hand to assure that it turns
smoothly and it is free from rubbing or binding.
29. Reinstall the coupler, check for alignment, and
install the coupler guard. See the sections
entitled Alignment Procedure and ANSI/OSHA
Coupler Guard Removal/Installation.
ORDERING PARTS
The pumps covered by this manual have been
designed and built with certain replaceable
wearing parts. The recommended inventory of
spare parts depends upon the installation and the
importance of continued operation.
For critical service requiring a minimum of down-
time, a complete or quick-change rotating element
is recommended.
For normal service, with repairs to be made in the
field, the following parts are recommended for
stock.
ƒ
1 set of bearings
ƒ
1 set of wearing rings
ƒ
1 set of casing gaskets, O-rings and lip
seals
ƒ
2 mechanical seals (complete)
Parts should be ordered as far in advance of their
use as possible since circumstances beyond the
control of the company may reduce existing stock.
Not all parts are stocked and must be
manufactured for each order.
To facilitate rapid handling of your order for spare
parts, be sure to include the following information:
1. Serial number of the pump. (See the pump
nameplate.)
2. Name of the part.
3. Quantity of each part.
4. Material desired. (Parts will be furnished in
original materials unless specified as a
material change. All material substitutions
should be discussed with the factory.)
Table 1: Capscrew Torque
Capscrew Torque (Foot-Pound)
Capscrew Diameter Capscrew Type Head Marking
1 / 4 5/16 3/8 7/16 1 / 2 5/8 3 / 4 7/8 1
SAE Grade 2 6 13 25 38 60 120 190 210 300
Brass
Stainless Steel
or
4 10 17 27 42 83 130 200 300
SAE Grade 5 10 20 35 60 90 180 325 525 800
SAE Grade 8 13 28 46 75 115 225 370 590 895