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Cleaning Procedures
• It is mandatory to clean regularly the coils for a proper
unit operation. Eliminate pollution and other residual
material help to extend the life of the coils and the unit
Sound power levels
CAUTION! Equipment Damage! Do not use coil cleaning
Discharge
agents to clean uncoated RTAF coils. Use clean water
only. Use of coil cleaning agents on uncoated RTAF coils
Measurement conditions:
could cause damage to coils.
Measurements taken in a room adjacent to the room containing the FWD, at the outlet of the rectangular duct (1.5 m
long) fixed to its discharge opening.
• Regular coil maintenance, including annual cleaning-
enhances the unit's operating efficiency by minimizing
Fan
compressor head pressure and amperage draw.
Unit
speed
The condenser coil should be cleaned at least once
1
each year or more if the unit is located in a "dirty"
FWD 08
2
or corrosive environment. Cleaning with cleansers
3
1
or detergents is strongly discouraged due to the
FWD 10
2
all-aluminum construction; straight water should
3
prove sufficient. Any breach in the tubes can result in
1
FWD 12
2
refrigerant leaks
3
1
Important: Only in extreme cases should any type of
FWD 14
2
chemical cleaner or detergent be used on microchannel
3
1
coils. If it becomes absolutely necessary because water
FWD 20
2
alone did not clean the coil, specify a cleaner that is:
3
• A is pH neutral cleaner.
• An alkaline cleaner that is no higher than 8 on the
Intake
pH scale.
• An acidic cleaner that is no lower than 6 on the
Measurement conditions:
pH scale.
Measurements taken at the horizontal air intake.
• Does not contain any hydrofluoric acids.
Be sure to follow the instructions provided with any
Fan
Unit
cleaner chosen. Keep in mind that it is still MANDATORY
speed
1
that the coils are thoroughly rinsed with water after the
FWD 08
2
application of the cleaner even if the instructions specify
3
a "No Rinse" cleaner. Cleaners or detergents that are
1
FWD 10
2
left on the coil due to improper rinsing will significantly
3
increase the possibility of corrosion damage on the
1
microchannel coil
FWD 12
2
3
1
WARNING! Hazardous Voltage!
FWD 14
2
Disconnect all electric power, including remote
3
disconnects before servicing. Follow proper lockout/
1
FWD 20
2
tagout procedures to ensure the power cannot be
3
inadvertently energized. Failure to disconnect power
before servicing could result in death or serious injury.
1. Disconnect Power to the unit.
2. Wear proper personal protection equipment such as
a face shield, gloves and waterproof clothing.
3. Remove enough panels from the unit to gain safe
access to the microchannel coil.
Note: It is better to clean the coil from the opposite
direction of normal air flow (inside of unit out) because
this allows the debris to be pushed out rather than forced
further into the coil.
RLC-SVX19E-GB
UNT-PRC002-GB
Condenser Coils MCHE Maintenance
Power level in dB(A), per Hz frequency band
125
250
500
55
50
42
57
54
47
58
57
50
57
51
45
58
54
48
60
58
50
57
51
45
58
54
48
60
58
50
56
62
50
61
66
55
63
69
58
57
63
51
61
66
55
63
69
58
Power level in dB(A), per Hz frequency band
125
250
500
56
55
55
63
62
60
66
65
63
62
58
55
66
63
60
70
67
63
62
58
55
66
63
60
70
67
63
66
65
65
73
72
69
78
76
73
68
72
64
76
76
68
78
79
71
4. Use a soft brush or vacuum to remove base debris or
surface loaded fibers from both sides of the coil.
5. Using a sprayer and water ONLY, clean the coil
following the guidelines below.
a. Sprayer nozzle pressure should not exceed
40 bars.
b. The maximum source angle should not exceed
25 degrees (Figure 27) to the face of the coil. For
best results spray the microchannel perpendicular
to face of the coil.
c. Spray nozzle should be approximately 5 to 10 cm
from the coil surface.
d. Use at least a 15º fan type of spray nozzle.
1000
2000
Figure 46 – Sprayer source angle
37
37
40
30
42
32
42
34
45
38
48
40
42
34
45
38
48
40
48
39
53
47
56
50
49
40
53
47
56
50
To avoid damage from the spray wand contacting the
coil, make sure the 90º attachment does not come in
contact with the tube and fin as abrasion to the coil
could result.
Repair/Replacement of
1000
2000
53
46
Microchannel Coil
60
53
62
56
Microchannel coils are considerably more robust in
58
51
62
56
design than tube and fin condenser coils, however they
65
59
are not indestructible. When damage or a leak occurs in
58
51
the field, it is possible to temporarily repair the coil until
62
56
65
59
another coil can be ordered.
65
57
71
64
If the leak is found to be within the tube area of the coil,
75
69
a field repair kit (KIT16112) is available through your
64
56
71
65
local Trane parts center. Because of the all-aluminum
74
69
construction and aluminum's high thermal expansion
rate, a leak located at or on the header assembly cannot
be repaired.
Overall power
4000
8000
dB(A)
31
30
46
38
40
50
40
43
53
33
28
48
39
35
51
42
39
54
33
28
48
39
35
51
42
39
54
38
36
56
46
45
60
50
49
63
39
37
57
46
45
60
50
49
63
Overall power
4000
8000
dB(A)
45
42
57
53
53
64
55
57
67
48
44
61
55
52
66
59
57
69
48
44
61
55
52
66
59
57
69
50
46
68
59
57
74
64
63
78
52
50
69
61
61
75
66
66
78
11
121
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