WSHP-SVX01E-EN 87
Preventive Maintenance
Maintenance on the unit is simplified
with the following preventive
suggestions:
Filter maintenance must be
performed to assure proper
operation of the equipment. Filters
should be inspected at least every
three months, and replaced when it
is evident they are dirty. Filter sizing
includes:
Table 6.
Size
60 HZ
Size
50 HZ
Filter Size
GEH
006-015 006-012 14 5/8" x 20 1/4"
(371 x 514)
018-030 015-024 16 3/8" x 23 5/8"
(416 x 600)
036-042 030-036 18 5/8" x 25 3/8"
(473 x 645)
048-060 042-060 20 5/8" x 29 3/4"
(524 x 755)
072-120 072-090 20 x 20 (3)
(508 x 508)
150-180 120-150 25 x 25 (3)
(635 x 635)
GEV
006-015 006-012 15 7/8" x 19 7/8"
(403 x 504)
018-030,
040
015-024 17 7/8" x 24 7/8"
(454 x 632)
036-042 030-036 19 7/8" x 24 7/8"
(504 x 632)
048-060 042-060 27 7/8" x 29 7/8"
(708 x 759)
GEV 072-
120
090 20 x 20 (4)
(508 x 508)
150-300 120-240 19 5/8" x 24 5/8" (6)
(498 x 625)‘
WARNING
Hazardous Voltage!
Disconnect all electric power,
including remote disconnects before
servicing. Follow proper lockout/
tagout procedures to ensure the
power can not be inadvertently
energized. Failure to disconnect
power before servicing could result
in death or serious injury.
Check the contactors and relays
within the control panel at least once
a year. It is good practice to check the
tightness of the various wiring
connections within the control panel.
A strainer (60 mesh or greater) must
be used on an open loop system to
keep debris from entering the unit
heat exchanger and to ensure a clean
system.
For units on well water, it is
important to check the cleanliness of
the water-to-refrigerant heat
exchanger. Should it become
contaminated with dirt and scaling
as a result of bad water, the heat
exchanger will have to be back
flushed and cleaned with a chemical
that will remove the scale. This
service should be performed by an
experienced service person.
WARNING
Hazardous Chemicals!
Coil cleaning agents can be either
acidic or highly alkaline. Handle
chemical carefully. Proper handling
should include goggles or face
shield, chemical resistant gloves,
boots, apron or suit as required. For
personal safety, refer to the cleaning
agent manufacturers Materials
Safety Data Sheet and follow all
recommended safe handling
practices. Failure to follow all safety
instructions could result in death or
serious injury.
It should be noted that the water
quality should be checked
periodically. See Ta b le 7.
Condensate Trap
For units incorporating a negative
trap design, ensure that the
condensate system is primed with
water at all times. Allowing a
negative, pressure condensate
system to run dry could cause a
break in the condensate seal
allowing the fan to draw water from
the condensate line to spray
moisture into the mechanical
system. By maintaining a primed
condensate trap, a seal will be
created and will help prevent these
complications.
Ta b l e 7. Wa t e r Quality Table
Scaling
Calcium and
magnesium (total
hardness)
Less than 350 ppm
Corrosion
pH 7-9.5
Hydrogen Sulfide Less than 1 ppm
Sulfates Less than 25 ppm
Chlorides Less than 125 ppm
Carbon Dioxide Less than 75 ppm
Total dissolved solids
(TDS)
Less than 1000
ppm
Biological Growth
Iron Bacteria Low
Erosion
Suspended Solids Low
Maintenance
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