112
CDHH-SVX003C-EN
Figure 73. Waterbox lifting—condenser and
evaporator lifting points
Lifting
Location
Lifting
Location
Lifting
Location
Lifting
Location
Reassembly
Once service is complete, the waterbox should be
reinstalled on the shell following all previous procedures in
reverse. Use new O-rings or gaskets on all joints after
thoroughly cleaning each joint.
Important: Torque waterbox screws as specified in “Torque
Requirements and Waterbox Weights,” p. 112.
Torque Requirements and Waterbox
Weights
Note: CDHH CenTraVac™ chillers are assembled with
metric fasteners.
Table 28. CenTraVac chiller screw torques — metric
Screw Size
(a)
Torque
(b)
Wrench Size
for ANSI/ISO
(c)
Bolts (mm)
ft·lb N·m
M5–0.8
54–66 (in-lb)
6–8 8
M6–1.0
86–105 (in-lb)
10–12 10
M8–1.25 17–21 23–28 13
M10–1.5 34–42 46–57 16
M12–1.75 60–72 81–98 19
M14–2.0 95–115 129–156 21
M16–2.0 148–180 200–244 24
M18–2.5 203–247 275–335 30
M20–2.5 288–348 390–472 36
(a)
Grade 8.8 metric fasteners
(b)
If threads are lubricated, reduce torque value by 25%.
(c)
ANSI = American National Standards Institute, ISO = International Organization for Standards
Waterbox Removal and Installation
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