Cleaning Procedure Required For Standard And Environment Guard Microchannel Coils; Cleaning Procedure For Environment Guard Premium Microchannel Coils - Johnson Controls Quantech Millennium QCC3080CZE Installation Operation & Maintenance

SECTION 10: MAINTENANCE
The required cleaning procedure is different depend-
ing on the type of coil and protective coating supplied
with the coil. This section describes the proper proce-
dures to maintain the integrity of each type of coil.
Cleaning procedure required for
standard and environment guard
microchannel coils
Standard and Environment Guard microchannel coils
must be cleaned following this procedure at least once
per quarter to ensure that the integrity of the coils and
the warranty of the coils are maintained. In environ-
ments where coils become heavily fouled, a monthly
frequency of cleaning is recommended. Refer to the
Microchannel Heat Exchanger Application Guide
(Form 150.12-AD1) for further details on the classifi-
cation of polluted and corrosive environments.
Proper care must be taken to ensure that
cleaning agents and water are not sprayed
directly onto electrical components and
wiring in the V-panels and the chiller.
Standard and Environment Guard coils
are gray/silver in color.
1. Remove surface debris such as dirt, leaves, in-
sects or fibers with a vacuum cleaner having a
soft brush attachment. When brushing debris off
the face of the coil a soft bristle brush, not wire,
can also be used. Do not scrape the coil with the
vacuum nozzle, air nozzle, or any other hard tool
2. Rinse the coil with potable tap water. Use a gentle
spray from a spray nozzle with a plastic end. Do
not contact the coil with the hose nozzle. Rinse
the coil by running water through every passage
in the heat exchanger surface until it is clean.
3. Apply a coil cleaning solution approved by John-
son Controls. Johnson Controls approves the use
of RectorSeal brand GulfCleanTM coil cleaner, or
equivalent, on microchannel coils. Coil cleaning
solution is available from Johnson Controls Af-
termarket Parts Centers in all global regions. Mix
the correct amount of cleaner solution and water
in accordance with the manufacturer's directions
on the container. Use a hand-held pump sprayer
to apply the mixed cleaner solution on the coils.
162
Ensure that the entire surface of the coils is wet-
ted with the solution. Allow the cleaning solution
to remain on each of the coils for approximately
10 mins.
4. Repeat the water rinse as described in Step 2 to
remove the cleaning solution.
5. It is important to remove and excess water trapped
in the coils immediately after the final water rinse.
The condenser fans on the chiller can be run af-
ter the final water rinse to properly dry the coils.
Any excess water can also be removed by blow-
ing air through the coils with a hand held blower
or vacuum.
Cleaning procedure for environment
guard premium microchannel coils
Environment Guard Premium microchannel coils
must be cleaned following this procedure at least once
quarterly to ensure that the integrity of the coils and
the warranty of the coils are maintained. In environ-
ments where there are high levels of pollution or cor-
rosive elements a monthly cleaning procedure using
steps 1, 2, and 7 below is recommended in addition
to the quarterly cleaning using steps 1-8. Refer to the
Microchannel Heat Exchanger Application Guide
(Form 150.12-AD1) for further details on the classifi-
cation of polluted and corrosive environments.
Proper care must be taken to ensure that
cleaning agents and water are not sprayed
directly onto electrical components and
wiring in the V-panels and the chiller.
Environment Guard Premium coils are
coated with a black epoxy coating.
1. Remove surface debris such as dirt, leaves, in-
sects or fibers with a vacuum cleaner having a
soft brush attachment. When brushing debris off
the face of the coil a soft bristle brush, not wire,
can also be used. Do not scrape the coil with the
vacuum nozzle, air nozzle, or any other hard tool.
2. Rinse the coil with potable tap water. Use a gentle
spray from a spray nozzle with a plastic end. Do
not contact the coil with the hose nozzle. Rinse
the coil by running water through every passage
in the heat exchanger surface until it is clean.
FORM QCC3-NM1
ISSUE DATE: 12/19/2023
Quantech