WSHP-SVX014J-EN
61
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
Size
Filter Size (Nominal) inches
DXHG
024 18 x 23
036 20 x 30
048
20 x 20 (Qty = 2)
060 20 x 20 and 30 x 20
070 20 x 20 and 30 x 20
DXVG
024 18 x 23
036 20 x 30
048 27 x 30
060 30 x 33
070 30 x 33
Table 45. Filter sizing EX* models
Size
Filter Size (Nominal) inches
EXHG
009 16 x 19
012 16 x 19
015 17 x 20
018 18 x 23
024 18 x 23
030 20 x 30
036 20 x 30
042
20 x 20 (Qty = 2)
048
20 x 20 (Qty = 2)
060 20 x 20 and 30 x 20
070 20 x 20 and 30 x 20
EXVG
009 16x19
012 16x19
015 17x20
018 18x23
024 18x23
030 20x30
036 20x30
042 27x30
048 27x30
060 33x30
070 30x33
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.
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