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NOTE – Failure to follow recommended maintenance procedures could void unit
warranties.
Interior Sanitization:
The interior of the unit should be cleaned and sanitized periodically. The frequency of
cleaning will be dependent upon the application and the HACCP procedures outlined
for the air-handling unit. It is extremely critical that the chemicals used to clean the unit
are compatible with the interior materials and components.
supplier of cleaners and sanitizers for the plant be consulted so they can make
recommendations on proper cleaning procedures and processes for the unit.
When cleaning the unit:
1.
Make sure the unit is locked and tagged out per plant procedures.
2. Cleaning personnel should make sure to have proper protective clothing, as per
their standard operating procedures.
3. Make sure all of the filters have been removed from the unit.
4.
Protect any control devices inside the unit with waterproof covering.
5.
If the unit is supplied with UVC lights, protect both the light and the fixture from
the cleaning process.
6.
Make sure that all of the drain connections are open.
7. Do not aggressively spray/wash the motor bearings. Aggressive washing can
damage the seal and wash out the grease. This can cause premature failure of
the bearing.
8.
The coils can be cleaned however do not spray with high pressure system,
especially at an angle toward the fins. This can bend the leading edge of the
fins over. If the coil has aluminum fins do not use caustic cleaners.
9. Do not aggressively spray the gasketing on the filters. This can damage the
gasketing.
10. Do not aggressively spray the caulked seams in the unit. This can damage or
dislodge the sealing caulk.
Prior to putting the unit back in operation:
1. Make sure the interior of unit is as dry as possible. Operating before the unit is dry
can cause water to be airborne and damage the electrical components or get
the filters wet and damage them.
2. Make sure any drain caps that have been removed for cleaning, are replaced
and sealed.
3. Remove all protective coverings used during the cleaning process.
4. Check all the caulked seams in the unit for integrity.
maintenance item.
5. Check the gasketing on the filter frames. Replace if necessary.
6.
Replace all filters and remove all protective material from interior components.
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MAINTENANCE INSTRUCTIONS
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It is recommended the
Caulking is a routine
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Summary of Contents for EVAPCO CPA
- Page 1 MAINTENANCE INSTRUCTIONS NOTE – Failure to follow recommended maintenance procedures could void unit warranties. Interior Sanitization: The interior of the unit should be cleaned and sanitized periodically. The frequency of cleaning will be dependent upon the application and the HACCP procedures outlined for the air-handling unit.
- Page 2 Make note in the maintenance schedule for the unit. Final Filter Service: CPA units can be supplied with two types of final filters, MERV 14 or 15 and HEPA filters. These filters are typically located at the discharge of the unit. The following is the servicing procedures for the two types of filters.
- Page 3 The filter gauge will ensure the final filters have reached their full life, and are not changed prematurely. Please contact EVAPCO at 507-446-8005 for availability of filters.
- Page 4 Use the following procedure to change the HEPA filters. 1) Stop the fan motor and lockout using disconnect switch. 2) Remove the fully loaded final filters. (NOTE: Maintenance personnel may want to use protective clothing and facemasks while changing.) Be careful not to dislodge any of the particles collected in the filter.
- Page 5 Some applications will have a three filter system, a pre, an intermediate and a final filter. The pre and intermediate filters are held in the same filter frame at the inlet of the unit using a special “P” clip. The intermediate filter “pushes through”...
- Page 6 Greasing procedure: Clean the grease fitting (or the area around the hole, if equipped with slotted grease screws. If motor has a purge plug, remove it. Apply grease gun fitting. Too much grease or injecting grease too quickly can cause premature bearing failure.
- Page 7 In addition to timely response checks, a preventative maintenance program of periodic cell replacement should be implemented. When the cell becomes depleted, a replacement cell can be obtained from Evapco, 507-446-8005. Simply unplug the ribbon cable from the transmitter, pull the old cell from the spring clip, discard the old cell and replace it with a new one.
- Page 8 6) Check local codes for proper disposal of the used bulbs. Desiccant Dehumidification (Optional feature) 1) CAUTION! The desiccant wheel is constructed of a fragile composite material. DO NOT clean with water, chemicals, solvents, or high pressure sprays. 2) See the separate section in the maintenance manual for proper cleaning and maintenance of the desiccant wheel and system.
- Page 9 Check trolley before each use and at regular intervals per the O&M manual. Unit Roof Fall Protection Anchor(s) (option): As an option, CPA units can be supplied with roof mounted fall protection anchor(s). The system...
- Page 10 4) Check all door gasketing yearly to make sure there is an airtight seal. 5) If the unit is supplied with a control panel cooling system, clean or replace the filter regularly. EVAPCO, Inc. 215 1 Street NE, P.O. Box 88...
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