Comfort-Aire HKV300A - Manual (Page 48)

Installation, Operation & Maintenance HKV SERIES Heat Controller, LLC
47
Water Coil Maintenance –
(Direct Ground Water Applications Only)
If the installation is performed in an area with a known high
mineral content (125 P.P.M. or greater) in the water, it is best to
establish with the owner a periodic maintenance schedule so
the coil can be checked regularly. Consult the well water ap-
plications section of this manual for a more detailed water coil
material selection. Should periodic coil cleaning be necessary,
use standard coil cleaning procedures which are compatible
with either the heat exchanger material or copper water lines.
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chance for scaling therefore 1.5 gpm per ton [2.0 l/m per kW] is
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Water Coil Maintenance –
(All Other Water Loop Applications)
Generally water coil maintenance is not needed however, if
the installation is located in a system with a known high dirt or
debris content, it is best to establish with the owner a periodic
maintenance schedule so the coil can be checked regularly.
These dirty installations are a result of the deterioration of iron
or galvanized piping or components in the system or open
cooling towers requiring heavy chemical treatment and mineral
buildup through water use. Should periodic coil cleaning be
necessary, use standard coil cleaning procedures which are
compatible with both the heat exchanger material and copper
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ton can produce water (or debris) velocities that can erode the
heat exchanger wall and ultimately produce leaks.
Filters
Filters must be clean to obtain maximum performance. They
should be inspected every month under normal operating condi-
tions and be replaced when necessary. Units should never be
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hibit a very high pressure drop for the fan motor and reduce air
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wash similar to that found at self-serve car washes.
Condensate Drain
In areas where airborne bacteria produce a slime in the drain
pan, it may be necessary to treat chemically with an algaecide
every three months or so to minimize the problem. The conden-
sate pan may also need to be cleaned periodically to assure
indoor air quality. The condensate drain can pick up lint and
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Compressor
Conduct annual amperage checks to ensure amp draw is no
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Fan Motors
All units have lubricated fan motors. Inspection should be
performed for proper tension and excessive wear of drive belts
every three months.
Air Coil
The air coil must be cleaned to obtain maximum performance.
Check once a year under normal operating conditions and, if
dirty, brush or vacuum clean. Care must be taken not to dam-
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sharp.
Cabinet
Do not allow water to stay in contact with the cabinet for long
periods of time to prevent corrosion of the cabinet sheet metal.
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inches for prevention. The cabinet can be cleaned using a mild
detergent.
Refrigerant System
To maintain sealed circuit integrity, do not install service gauges
unless unit operation appears abnormal. Reference the operat-
ing chart for pressure and temperatures. Verify that air and
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servicing the refrigerant circuit.
Preventive Maintenance
To avoid the release of refrigerant into the atmosphere, the
refrigerant circuit of this unit must be serviced only by techni-
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ments.
WARNING!
! !