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Figure 18. Installation of 1/8-in. GORE-TEX tape
8. Lift the suction elbow into place using a sling or chain-
fall hoist.
9. Install the suction elbow retaining bolts.
10. Tighten the retaining bolts only "hand tight". Tighten
two retaining bolts, 180 degrees apart at the
compressor connection. Then tighten two bolts,
180 degrees apart at the evaporator connection.
Alternate between connections until all retaining bolts
are tight. Monitor the dial indicators to ensure that
there is no more than 0.010 inches of compressor
movement. If there is more movement than this,
loosen all of the bolts, "zero" the dial indicators and
repeat the procedure. Refer to
p. 20
for bolt tightening sequences.
11. Reconnect the economizer vent pipe. Be sure to clean
the mating surfaces and use new O-rings on the
connections. Tighten first stage volute and economizer
top flange bolts; refer to
Flanges," p.
20.
12. Reinstall all other chiller components which were
removed.
13. Torque all bolts to specifications listed in
Table 2.
Bolt torques for waterbox mounting
Bolt Size
(in)
(mm)
1/2
13
5/8
16
130–190
Metric Bolt Size (Non-Gasketed Joints or O-ring Joints)
Bolt Size
M8
M10
M12
M16
130–179
M20
239–334
20
"Tightening Flanges,"
Table 2, p. 20
and
"Tightening
Table
Torque
(ft·lb)
(N·m)
70–100
95–136
176–258
Torque
(ft·lb)
(N·m)
12–16
16–22
24–33
33–45
48–65
65–89
177–243
324–453
14. Reconnect the previously cut compressor supply and
return lines, oil supply and return lines, and the motor
cooling lines using the factory-supplied couplings.
Tightening Flanges
Flanges with 8 or 12 Bolts
Tighten all bolts to a snug tightness, following the
numerical sequence for the appropriate bolt pattern as
shown below. Repeat this sequence to apply the final
torque to each bolt.
7
1
4
8
2
6
8 bolt flange
Flanges with 16 Bolts
Tighten only the first half of the total number of bolts to a
snug tightness, following the numerical sequence for the
appropriate bolt pattern as shown below. Next,
sequentially tighten the remaining half of the bolts in
numerical order.
1
5
16
12
8
4
14
10
2
6
2.
1
12
5
8
4
3
10
6
12 bolt flange
9
13
3
7
11
15
CVHM-SVN001C-EN
5
9
3
7
11
2
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