Fan Coils
INSTALLATION, OPERATION, & MAINTENANCE MANUAL
14
SECTION THREE — Normal Operation & Periodic Maintenance, Cont’d.
void all factory warranties. All repair work should be
done in such a manner as to maintain the equipment in
compliance with governing codes, ordinances and testing
agency listings.
More specific information regarding the use and operating
characteristics of the standard controls offered by the
manufacturer are contained in other manuals.
Valves and Piping
No formal maintenance is required on the valve-package
components most commonly used with fan coil units other
than a visual inspection for possible leaks in the course
of other normal periodic maintenance. In the event that
a valve should need replacement, the same precautions
taken during the initial installation to protect the valve
package from excessive heat should also be used during
replacement.
Filters, Throwaway
The type of throwaway filter most commonly used on fan
coil units should be replaced on a regular basis. The time
interval between each replacement should be established
based on regular inspection of the filter, and should be
recorded in the log for each unit. Refer to the product
catalog for the recommended filter size for each product
type and size. If the replacement filters are not purchased
from the factory, the filters used should be the same type
and size as those furnished from, or recommended by the
factory. Pleated media, or extended surface filters should
not be used since the high air pressure drops encountered
with these types of filters is not compatible with the type
of fan coil unit covered in this manual. Consult the factory
for applications using filter types other than the factory
standard or optional product.
Filters, Permanent
A maintenance schedule for permanent filters should
be developed in the same manner as throwaway filters.
Unlike throwaway filters, permanent filters may be
cleaned and re-installed in the unit instead of being
discarded when dirty. The optional factory permanent
filter may be cleaned in hot soapy water to remove any
trapped dirt. It should then be set aside on edge to dry.
Before replacing the filter in the unit, it should be
recharged with some type of entrapment film such as
“Film-Cor Recharging Oil.” The filter should be sprayed on
both sides or submerged in the film to assure complete
coverage. The filter should not be allowed to soak in the
film, but should be immediately removed and the excess
film drained from the filter before re-installation in the unit.
Consult a local filter supplier for types of available cleaning
solutions and charging films.
It should be noted that permanent filters normally have
less static pressure loss than throwaway filters.
Drain
The drain should be checked before initial start-up, and at
the beginning of each cooling season to assure that the
drain, drain trap, and line are clear. If it is clogged, steps
should be taken to clear the debris so that condensate will
flow easily.
Periodic checks of the drain should be made during the
cooling season to maintain a free-flowing condensate.
Units provided with a secondary or “tell-tale” drain
connection will indicate a clogged main-drain line by flow
from the “tell-tale” connection.
Should the growth of algae and/or bacteria be a concern,
consult an air conditioning and refrigeration supply
organization familiar with local conditions for chemicals, or
other solutions available to control these agents.
Replacement Parts
Factory replacement parts should be used wherever
possible to maintain unit performance, it’s normal
operating characteristics, and the testing agency listings.
Replacement parts may be purchased through a local
Sales Representative.
Contact the local Sales Representative or the factory
before attempting any unit modifications. Any
modifications not authorized by the factory could result
in personnel injury, damage to the unit, and could void all
factory warranties.
