Trane Arctic Manhattan Gen II, Installation, Operation And Maintenance Manual

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54 ARTC-SVX001B-EN
5. For extremely dirty coils, chemical soaking may be
required to loosen debris build-up. Apply chemicals
with a hand-held pump sprayer following a similar
pattern used in the water cleaning.
6. Let the chemical mixture soak in the evaporator for
a short period of time to loosen sediment and scale
build-up. Trane recommends using straight tap
water except in extreme cases. (Take extra
precautions by covering electrical components with
plastic bags, etc.)
7. After chemical cleaning, all surfaces must be
flushed thoroughly with clean water to remove
residual chemicals. Trace chemical residue may
result in premature aluminum fin breakdown and
deterioration requiring coil replacement.
8. Securely reinstall fan grill assembly (or V-baffle end
cap).
9. Turn power back on individual unit after ensuring
all electrical connections are wiped dry.
10. Ensure that each unit’s panels are clean and clear of
debris.
Evaporator Cleaning Procedure
Fouling of evaporators will result in a gradual decline in
performance of the chiller.
1. Isolate each evaporator using the isolation valves.
2. Back flush using the city water supply forced to a
drain.
3. A brazed-plate evaporator is cleaned by back
washing which is forcing a cleansing water/glycol
mixture backwards through it at higher than normal
pressures.
4. Flushing should take place across a maximum 30
Mesh screen filter/strainer with frequent screen
cleaning to remove the debris from the chiller.
Flushing should continue until the screen is clean.
After detergent and chemical cleaning, flush the
piping for a minimum of one hour with fresh water
to remove any remaining cleaning compounds.
Compressor Tasks
The Manhattan™ Gen II Chiller has been designed for
ease of maintenance access. When properly positioned
within a machine room or space, Copeland
compressors can be quickly removed for repair or
replacement. (See
“Site Preparation and
Clearances,” p. 14 ).
Remove Compressor
Verify that power is turned OFF via the chiller module
breaker that is found in the power distribution panel.
Confirm module power is OFF by testing with known
operational voltmeter. Once confirmed, install lockout/
tagout equipment to ensure power is not turned on
while service work is being performed.
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cca an n n no ott b be e iin na ad dv ve errtte en nttlly y e en ne errg giizze ed d.. V Ve erriiffy y tth ha att n no o
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1. Close the suction and discharge rotalock valves.
Firmly front-seat both rotalock valves clockwise.
N No otte e:: Do not over-tighten as the valve can become
difficult to loosen if over-tightened.
2. Recover the remaining refrigerant charge from the
compressor using a suitable recovery machine and
a clean recovery cylinder that is pressure rated for
the refrigerant being removed. Weigh refrigerant
charge that was removed.
3. Remove all compressor electrical wiring, as well as
safety and crankcase heater wiring. Make sure to
notate all connection points for the new installation.
N No otte e:: Be sure to document conductor/wire numbers
and their corresponding termination points.
4. Using a spud wrench, remove the rotalock nuts
from the compressor.
5. Remove the four compressor mounting bolts from
frame using two 1/2 inch sockets, or a socket and a
wrench. (Install the nuts underneath the frame.)
6. Remove the compressor from the module.
Install Compressor
Verify that power is disconnected from the chiller.
W WA AR RN NIIN NG G
H Ha azza arrd do ou uss V Vo olltta ag ge e!!
F Fa aiillu urre e tto o d diisscco on nn ne ecctt p po ow we err b be effo orre e sse errv viicciin ng g cco ou ulld d
rre essu ulltt iin n d de ea atth h o orr sse erriio ou uss iin njju urry y..
D Diisscco on nn ne ecctt a allll e elle eccttrriicc p po ow we err,, iin nccllu ud diin ng g rre em mo otte e
d diisscco on nn ne eccttss b be effo orre e sse errv viicciin ng g.. F Fo ollllo ow w p prro op pe err
llo occkko ou utt//tta ag go ou utt p prro occe ed du urre ess tto o e en nssu urre e tth he e p po ow we err
cca an n n no ott b be e iin na ad dv ve errtte en nttlly y e en ne errg giizze ed d.. V Ve erriiffy y tth ha att n no o
p po ow we err iiss p prre esse en ntt w wiitth h a a v vo ollttm me ette err..
1. Position the compressor into the chiller and align
the mounting holes. Apply anti-seize compound to
the four mounting bolts, washers, and nuts before
installation. Tighten nuts securely with 1/2 inch
socket and wrench.
2. Remove Schrader valve fittings from old
compressor and install them on new compressor
with appropriate thread sealant.
3. Install the rotalock nuts on the compressor suction
and discharge connections. Tighten with a spud
wrench.
M Ma aiin ntte en na an ncce e P Prro occe ed du urre ess