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Coil Maintenance
Coils must be clean to obtain maximum performance.
Check once a year under normal operating conditions
and, if dirty, brush or vacuum clean. Soiled fins reduce
the capacity of the coil, demand more energy from the
fan, and create an environment for odor and bacteria
to grow and spread through the conditioned zone.
High pressure water (400 psi or less) may be used to
clean coils with fin thickness over 0.006 inches thick.
Test the spray pressure over a small corner of the
coil to determine if the fins will withstand the spray
pressure.
For coils with fragile fins or high fin density, foaming
chemical sprays and washes are available. Many coil
cleaners contain harsh chemicals, so they must be
used with caution by qualified personnel only. Care
must be taken not to damage the coils, including fins,
while cleaning.
CAUTION
Fin edges are sharp.
Winterizing Coils
Coil freeze-up can be caused by such things as air
stratification and failure of outdoor air dampers and/
or preheat coils. Routine draining of water cooling
coils for winter shutdown cannot be depended upon
as insurance against freeze-up. Severe coil damage
may result. It is recommended that all coils be drained
as thoroughly as possible and then treated in the
following manner.
Fill each coil independently with an antifreeze solution
using a small circulating pump and again thoroughly
drain. Check freezing point of antifreeze before
proceeding to next coil. Due to a small amount of
water always remaining in each coil, there will be
diluting effect. The small amount of antifreeze solution
remaining in the coil must always be concentrated
enough to prevent freeze-up.
NOTE: Carefully read instructions for mixing antifreeze
solution used. Some products will have a higher
freezing point in their natural state than when mixed
with water.
Drain Pan Maintenance
Drain pans in any air conditioning unit will have
some moisture in them, therefore, algae and other
organisms will grow due to airborne spores and
bacteria. Periodic cleaning is necessary to prevent
this buildup from plugging the drain and causing the
drain pan to overflow. Inspect twice a year to avoid
the possibility of overflow. Also, drain pans should be
kept clean to prevent the spread of disease. Cleaning
should be performed by qualified personnel.
®
Start-Up Documentation
Job Information
Job Name
_________________________________
Address
_________________________________
City ________________ State ______ Zip ___________
Phone Number
_________________________________
Contact Person
_________________________________
Start-Up Company Information
Service Oranization _______________________________
Address
_______________________________
City ________________ State ______ Zip ___________
Phone Number
_______________________________
Fax Number
_______________________________
Start-Up Date
_______________________________
Start-Up Personnel Name __________________________
Nameplate Information
Unit Model Number _______________________________
Volts ________________ Hertz ________ Phase _______
Amps _______________Mark _______________________
Fan rpm _____________
Unit Serial Number _______________________________
Field Start-Up Documentation
o Check blower rotation
o Check air volume (cfm)
_________ Design
_________ Actual
o Actual motor voltage
o Actual motor hertz
o Actual motor phase
o Actual motor amps
Drive
o Fan RPM Range
_________ Minimum
_________ Maximum
Model MSCF Modular Small Cabinet Fan
_________
Volts
_________
Hertz
_________
Phase
_________
Amps
17
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