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Maintenance
WARNING
Hazardous Service Procedures!
Failure to follow all precautions in this manual and on
the tags, stickers, and labels could result in death or
serious injury.
Technicians, in order to protect themselves from
potential electrical, mechanical, and chemical
hazards, MUST follow precautions in this manual and
on the tags, stickers, and labels, as well as the
following instructions: Unless specified otherwise,
disconnect all electrical power including remote
disconnect and discharge all energy storing devices
such as capacitors before servicing. Follow proper
lockout/tagout procedures to ensure the power can
not be inadvertently energized. When necessary to
work with live electrical components, have a qualified
licensed electrician or other individual who has been
trained in handling live electrical components perform
these tasks.
Preventative 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 is shown below.
Table 44. Filter sizing DX* models
Filter Size (Nominal) inches
Size
024
036
048
060
070
024
036
048
060
070
WSHP-SVX014J-EN
DXHG
18 x 23
20 x 30
20 x 20 (Qty = 2)
20 x 20 and 30 x 20
20 x 20 and 30 x 20
DXVG
18 x 23
20 x 30
27 x 30
30 x 33
30 x 33
Table 45. Filter sizing EX* models
Filter Size (Nominal) inches
Size
009
012
015
018
024
030
036
042
048
060
070
009
012
015
018
024
030
036
042
048
060
070
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.
EXHG
16 x 19
16 x 19
17 x 20
18 x 23
18 x 23
20 x 30
20 x 30
20 x 20 (Qty = 2)
20 x 20 (Qty = 2)
20 x 20 and 30 x 20
20 x 20 and 30 x 20
EXVG
16x19
16x19
17x20
18x23
18x23
20x30
20x30
27x30
27x30
33x30
30x33
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