62
ARTC-SVX005B-EN
N
NO
OT
TIIC
CE
E
E
Eq
qu
uiip
pm
me
en
ntt D
Da
am
ma
ag
ge
e!!
F
Fa
aiillu
urre
e tto
o ffo
ollllo
ow
w iin
nssttrru
uccttiio
on
nss cco
ou
ulld
d rre
essu
ulltt iin
n
e
eq
qu
uiip
pm
me
en
ntt d
da
am
ma
ag
ge
e..
D
Do
o n
no
ott o
op
pe
erra
atte
e w
wiitth
ho
ou
utt ssttrra
aiin
ne
errss iin
n p
plla
acce
e..
1. De-energize power to the module containing the
strainer by turning the power OFF at the breaker
and/or disconnect.
2. Close the two service isolation valves between the
header and the evaporator.
N
No
otte
e:: If this is a variable flow chiller, the HX outlet may
be equipped with an electronic valve that must
be manually locked in the closed position.
3. Remove the insulation to expose the roll grooved
blind end cap or service cap on the end of the
strainer housing. Utilize a short section of hose to
connect to the valve on the end cap to relieve
pressure and capture fluid. (Dispose of or re-utilize
water/glycol mixture according to local protocols.)
C
CA
AU
UT
TIIO
ON
N
E
Ex
xp
pllo
ossiio
on
n H
Ha
azza
arrd
d!!
F
Fa
aiillu
urre
e tto
o rre
elliie
ev
ve
e p
prre
essssu
urre
e g
grra
ad
du
ua
alllly
y cco
ou
ulld
d rre
essu
ulltt
iin
n m
miin
no
orr tto
o m
mo
od
de
erra
atte
e iin
njju
urry
y a
an
nd
d e
eq
qu
uiip
pm
me
en
ntt
d
da
am
ma
ag
ge
e..
W
Wa
atte
err//g
glly
ycco
oll m
miix
xttu
urre
e cca
an
n b
be
e u
un
nd
de
err cco
on
nssiid
de
erra
ab
blle
e
h
hy
yd
drra
au
ulliicc p
prre
essssu
urre
e iin
n tth
he
e ssttrra
aiin
ne
err h
ho
ou
ussiin
ng
g.. C
Cllo
osse
e
iisso
olla
attiio
on
n v
va
allv
ve
ess ffu
ulllly
y.. R
Re
elliie
ev
ve
e p
prre
essssu
urre
e u
ussiin
ng
g a
a
b
bo
oiille
err v
va
alle
e.. U
Usse
e e
ex
xttrre
em
me
e cca
arre
e tto
o ssllo
ow
wlly
y rre
em
mo
ov
ve
e tth
he
e
e
en
nd
d cca
ap
p a
an
nd
d rre
elle
ea
asse
e p
prre
essssu
urre
e g
grra
ad
du
ua
alllly
y..
4. Inspect the gasket and service cap for abrasions,
tears, excessive dirt, or deterioration. Replace
gasket if necessary.
5. Remove the strainer from the housing.
6. Clean the strainer inside and out using a soft
natural bristle brush and tap water.
7. Clean the interior of the end cap (or service cap),
and the gasket using a soft natural bristle brush and
tap water. Apply a light coating of lubrication to the
gasket.
8. Re-install the strainer in the housing (large end
first). Replace the gasket and end cap and tighten
coupling collar securely.
9. Ensure the water/glycol make-up system is
operational to replenish the water/glycol mixture
lost during the cleaning process.
10. Energize power to the module containing the
strainer by turning power ON at the breaker and/or
disconnect.
Figure 35.
Chiller strainer
Heat Exchanger Cleaning Procedure
Fouling of the heat exchangers will result in a gradual
decline in performance of the chiller/heater.
1. Isolate each heat exchanger using the isolation
valves.
2. Back flush using the city water supply forced to a
drain.
3. A brazed-plate heat exchanger 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/
heater. 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 PolyTherm Chiller/Heater has been designed for
ease of maintenance access. When properly positioned
within a machine room or space, Trane compressors
can be quickly removed for repair or replacement. (See
“Site Preparation and Clearances,” p. 11
).
Remove Tandem Compressors
Verify that power is disconnected from the chiller/
heater.
