66
HDWA-SVX001D-EN
Figure 46. Waterbox and 3/8-in. (9.5-mm) rigging
shackle
Waterbox Reassembly
After service is complete, the waterbox should be
reinstalled on the shell following removal procedures
in reverse (refer to “Waterbox Removal,” p. 65). After
thoroughly cleaning each joint, use new O-rings on ALL
joints. Torque waterbox bolts in a star pattern to 163
ft·lb (221.0 N·m) dry.
Table 16. Waterbox weights
Shell
Size
Descrip-
tion
Fabricated Non-
marine Waterbox
Welded Dome
Marine Waterbox
Cover
lb
kg
lb
kg
020
Condens-
er Supply,
150 psi
(1034.2
kPa)
145 65.8 253 115
Evapora-
tor
Supply,
150 psi
(1034.2
kPa)
170 77.1 253 115
Return 100 45.4 NA NA
040
Condens-
er Supply,
150 psi
(1034.2
kPa)
210 95.3 395 179
Evapora-
tor
Supply,
150 psi
(1034.2
kPa)
245 111.1 395 179
Return 145 65.8 NA NA
Note: Each optional waterbox hinge weighs
44 lb (19.94 kg)
Obtain the required parts from your local Trane Parts
Center.
Chemical Cleaning
Scale deposits are best removed by chemical means.
Consult a qualified water treatment specialist (i.e., one
that knows the local water supply chemical/mineral
content) for a recommended cleaning solution suitable
for the job. (A standard condenser water circuit is
composed solely of copper, cast iron and steel.)
Improper chemical cleaning can damage tube walls.
All of the materials used in the external circulation
system, the quantity of the solution, the duration of the
cleaning period, and any required safety precautions
should be approved by the company furnishing the
materials or performing the cleaning.
NNoottee:: Chemical tube cleaning should ALWAYS be
followed by mechanical tube cleaning.
Cleaning the Evaporator
Because the evaporator is typically part of a closed
circuit, it does not accumulate appreciable amounts of
scale or sludge. However, if cleaning is deemed
necessary, use the same cleaning methods described
in “Cleaning the Condenser,” p. 64.
Waterbox Hinges
The hinged waterbox option is available for the
evaporator, the condenser, or both. This option can be
ordered with the hinge only on the evaporator and/or
only on the condenser; however, the hinges MUST be
ordered for both ends of the evaporator and/or the
condenser.
The hinged waterbox option does NOT require annual
maintenance or lubrication, although a visual
inspection is recommended to ensure that the hinges
have not been damaged or altered. For assembly and
disassembly of hinges, please refer to HDWA-
SVN001*-EN.
MMaaiinntteennaannccee
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