Modine Manufacturing ElectroFin User manual

Cleaning Procedures for Modine Coated Coils and/or Cabinets
NOTE: Please follow proper safety policies, procedures and practices when working on HVAC
equipment.
ELECTRICAL SHOCK HAZARD CUT HAZARD
Failure to follow this warning could cause
personal injury or death. Before performing
service or maintenance operations on unit,
always turn off main power switch to unit
and install lock(s) and lockout tag(s). Unit
may have more than one power switch.
Ensure electrical service to rooftop unit
agrees with voltage and amperage listed on
the unit rating plate.
Failure to follow this caution may result in personal
injury. Sheet metal parts may have sharp edges or
burrs. Use care and wear appropriate protective
clothing, safety glasses and gloves when handling
parts and servicing air conditioning equipment.
A scheduled and documented QUARTERLY cleaning procedure is REQUIRED for all HVAC/R
equipment coated with Modine coil and/or cabinet protection.
GENERAL INSTRUCTIONS: ( Detailed instructions to follow)
Remove surface loaded fibers – Coils
Only
Surface loaded fibers or dirt should be removed prior to cleaning and/or water rinse to prevent further restriction of
airflow. If unable to back wash the side of the coil opposite that of the coils entering air side, then surface loaded fibers
or dirt should be removed with a vacuum cleaner. If a vacuum cleaner is not available, a soft non-metallic bristle brush
may b e used while brushing with the fins, typically vertically for RTPF coils. Co
il surfaces can be easily damaged (fin
edges bent over) if the brush is applied across the fins.
NOTE: Use of a water stream, such as a garden hose, against a surface loaded coil will drive the fibers, dirt and salts
into the coil. This will make cleaning efforts more difficult. Surface
loaded fibers must be completely removed prior to
completing low velocity cleaning and water rinses.
SAFETY:
Installation and servicing of air conditioning
equipment can be hazardous due to system
pressure and electrical components. Only
trained and qualified service personnel
should install, repair, or service air
conditioning equipment.
EFFICIENCY:
Routine cleaning of coil surfaces is
essential to maintain proper operation of
the unit. Elimination of contamination and
removal of harmful residues will greatly
increase the life of the coil and extend the
life of the unit.

Required quarterly cleaning and chloride removal of Modine coated equipment (coil and cabinet
surfaces)
Quarterly cleaning is required to maintain warranty coverage and is essential to maintain the life of a Modine coated
coil and cabinet. Coil and cabinet cleaning shall be part of the unit's regularly scheduled maintenance procedures.
Failure to clean a Modine coated coil or cabinet on the prescribed quarterly cycle will void the warranty
and may result
in reduced efficiency and durability in the environment.
Aroutine two-step quarterly coil cleaning is required to maintain warranty. Step one is to clean the coil with the
below approved coil cleaner (see approved products list under the "Recommended Coil Cleaners” section. Step
two is to use the approved salt/chlorideremover under the "Recommended Chloride Remover” section to dissolve
soluble salts and revitalize the unit. It is very important when cleaning and/or rinsing not to exceed 130
O
Fand
potable water pressure is less than 100 psig to avoid damaging the unit and coil fin edges.
For routine quarterly cabinet cleaning, first clean the cabinet using a rag or sponge with a mild dish soap such as
Dawn to remove dirt and/or contaminants. Once the cabinet surfaces have been cleaned, a thorough rinse should
be completed. After the cabinet has been cleaned, use the approved chloride remover under the "Recommended
Chloride Remover” section to remove soluble salts and revitalize the units cabinetry. This is then followed by a
thorough water rinse. It is very important when cleaning and/or rinsing not to
exceed 130
O
F and potable water
pressure is less than 100 psig to avoid damaging the unit.
Recommended Coil Cleaners
The following coil cleaners, assuming it is used in accordance with the manufacturer's directions on the container
for proper mixing and cleaning, have been
approved for use on Modine coated coils to remove mold, mildew, dust,
soot, greasy residue, lint and other particulate. Never use any cleaners that are not approved.
Table 1 - Step 1 of 2
Coil Cleaner Reseller
GulfCoatTM Coil Cleaner Modine: Tel: [phone] Fax: [phone]
Recommended Chloride Remover
The following chloride remover, assuming it is used in accordance with the manufacturer's directions on the
container for proper mixing, has been approved for use on Modine coated coils and cabinets to remove
chlorides/salts & sulfates. Never use any chloride removers that are not approved.
Table 2 - Step 2 of 2
Chloride Remover Reseller
CHLOR*RID
®
Concentrate
Modine: Tel: [phone] Fax: [phone]
Harsh Chemical and Acid Cleaners
Harsh chemicals, household bleach or acid cleaners should not be used to clean outdoor or indoor Modine coated coils and/or
cabinets. These cleaners can be very difficult to rinse out of the coil and can accelerate the corrosion attack of the coil.
High Velocity Water or Compressed Air
High velocity water from a pressure washer or compressed air should only be used at a very low pressure, (< 100 psi), to prevent fin
and/or coil damages. The force of the water or air jet may bend the fin edges and increase airside pressure drop. Reduced unit
performance or nuisance unit shutdowns may occur.

DETAILED INSTRUCTIONS:
SCOPE:
The Warranty Protection plan consists of a two-step process. Step 1 is to clean the coils and step 2 is to remove the salts/chlorides.
The coils are to be thoroughly cleaned using an approved coil cleaner as listed above in table 1. Once cleaned, they will then need
to have the chlorides/salts removed byusing preferred chloride remover as listed above in table 2.
1 Complete the coil cleaning following these steps.
1.1 Ensure that the power to the unit is off and locked out.
1.2 Clean the area around the unit if needed to ensure leaves, grass or loose debris will not be blown into the
coil.
1.3 Remove panels or tops as required gaining access to the coil(s) to be cleaned.
1.4 Using a pump up sprayer, fill to the appropriate level with potable water and add the correct amount of
approved cleaner as per manufacture instructions leaving room for the pump plunger to be reinserted.
NOTE: Coils should always be cleaned / back flushed, opposite of airflow to prevent impacting the dirt into the coil.
1.5 If the coils have heavy dirt, fibers, grass, leaves etc. on the interior or exterior face areas, a vacuum and
brush should be used to remove those surface contaminants prior to applying cleaner. The interior floor,
drain tray or pan areas should also be vacuumed.
1.6 Apply the mixed cleaner to coil surfaces using a pressurized pump up sprayer maintaining a good rate of
pressure and at a medium size nozzle spray, (not a solid stream and not a wide fan but somewhere in the
middle). Work in sections/panels ensuring that all areas are covered and kept wetted.
1.7 Apply the cleaner to unit interior air exiting side coil surfaces first. Work in sections/panels moving side
to side and from top to bottom.
1.8 Generously soak coils by spraying cleaner directly on and into the fin pack section to be cleaned and allow
the cleaning solution to soak for 5 to 10 minutes.
1.9 Using pressurized potable water, (< 100 psi), rinse the coils and continue to always work in sections/panels.
Start at the top of the coil and slowly move vertically downward to the bottom. Then, staying in the same
vertical area, slowly move back up to the top where you started. Now move over slightly overlapping the area
just completed and repeat above. Continue until all coil areas on the inside of the unit have been rinsed.
1.10 Complete steps 1.5-1.9 for the exterior air entering side of the coils.
1.11 Final rinse – Now complete a quick rinse of both sides of the coil including the headers, piping, u-bends
and hairpins.
1.12 If the coil has a drain pan or unit floor that is holding rinse water or cleaner, extra time and attention will
need to be taken in those areas to ensure a proper rinse has been completed.
Warranty Protection Step 1 of 2

2 Complete the coil chloride (salt) removal following these steps.
2.1 CHLOR*RID
®
is a concentrate to be used for both normal inland applications at a 100:1 mix ratio OR for
severe coastal applications 50:1 m i x r a t i o with potable water, (2.56 ounces of Chlor*rid to 1 gal of water).
Using a pump up sprayer, fill to the appropriate level with potable water and add the correct amount of
CHLOR*RID
®
salt remover leaving room for the pump plunger to be reinserted.
2.2 Apply Chlor*rid to all external coil surfaces using a pressurized pump up sprayer maintaining a good rate of
pressure and at a medium size nozzle spray, (not a solid stream and not a wide fan but somewhere in the
middle). Work in sections/panels ensuring that all areas are covered and kept wetted.
2.3 Generously soak coils by spraying Chlor*rid directly on and into the fin pack section. Let stand for 5 to 10
minutes keeping the area wetted. Do not allow to dry before rinsing.
2.4 Using pressurized potable water, (< 100 psi), rinse the Chlor*rid and dissolved chlorides/salts off of the coils
continuing to always work in sections/panels.
2.5 Starting at the top of the coil, begin rinsing the coil from side to side until you reach the bottom. Repeat
as many times as is necessary to ensure all coil sections/panels have been completed and are thoroughly
rinsed.
2.6 Reinstall all panels and tops that were removed.
3 Complete the cabinet cleaning and chloride removal following these steps.
3.1 Ensure that the power to the unit is off and locked out.
3.2 Clean the cabinet using a rag or sponge with a mild dish soap such as Dawn to remove dirt and/or
contaminants.
3.3 Once the cabinet surfaces have been cleaned, a thorough rinse should be completed.
3.4 After the cabinet has been cleaned, use the approved chloride remover under the "Recommended
Chloride Remover” section to remove soluble salts and revitalize the unit’s cabinetry.
3.5 NOTE: It is very important when cleaning and/or rinsing not to exceed 130
O
F and potable water
pressure is less than 100 psig to avoiddamaging the unit.
3.6 Final rinse – Now complete a quick rinse of all cabinetry and coils to ensure a proper final rinse.
3.7 Notify the proper personnel that the equipment may now be turned backed on.
Warranty Protection Step 2 of 2
INS75-130