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WSHP-SVX014F-EN
Maintenance
WWAARRNNIINNGG
HHaazzaarrddoouuss SSeerrvviiccee PPrroocceedduurreess!!
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ddeeaatthh oorr sseerriioouuss iinnjjuurryy..
TTeecchhnniicciiaannss,, iinn oorrddeerr ttoo pprrootteecctt tthheemmsseellvveess ffrroomm
ppootteennttiiaall eelleeccttrriiccaall,, mmeecchhaanniiccaall,, aanndd cchheemmiiccaall
hhaazzaarrddss,, MMUUSSTT ffoollllooww pprreeccaauuttiioonnss iinn tthhiiss mmaannuuaall
aanndd oonn tthhee ttaaggss,, ssttiicckkeerrss,, aanndd llaabbeellss,, aass wweellll aass tthhee
ffoolllloowwiinngg iinnssttrruuccttiioonnss:: UUnnlleessss ssppeecciiffiieedd ootthheerrwwiissee,,
ddiissccoonnnneecctt aallll eelleeccttrriiccaall ppoowweerr iinncclluuddiinngg rreemmoottee
ddiissccoonnnneecctt aanndd ddiisscchhaarrggee aallll eenneerrggyy ssttoorriinngg
ddeevviicceess ssuucchh aass ccaappaacciittoorrss bbeeffoorree sseerrvviicciinngg..
FFoollllooww pprrooppeerr lloocckkoouutt//ttaaggoouutt pprroocceedduurreess ttoo
eennssuurree tthhee ppoowweerr ccaann nnoott bbee iinnaaddvveerrtteennttllyy
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eelleeccttrriiccaall ccoommppoonneennttss,, hhaavvee aa qquuaalliiffiieedd lliicceennsseedd
eelleeccttrriicciiaann oorr ootthheerr iinnddiivviidduuaall wwhhoo hhaass bbeeeenn
ttrraaiinneedd iinn hhaannddlliinngg lliivvee eelleeccttrriiccaall ccoommppoonneennttss
ppeerrffoorrmm tthheessee ttaasskkss..
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 45. Filter sizing DX* models
Size
Filter Size (Nominal) inches
DXHF
024 18x24
036 19x26
048 21x30
060 21x30
070 21x30
DXVG
024 18x23
036 20x30
048 27x30
060 30x33
070 30x33
Table 46. Filter sizing EX* models
Size (60
Hz)
Filter Size (Nominal) inches
Size (60 Hz) Filter Size (Actual) inches
EXHF
006 15 x 20
009 15 x 20
012 15 x 20
015 15 x 20
018 18 x 24
024 18 x 24
030 19 x 26
036 19 x 26
042 21 x 30
048 21 x 30
060 21 x 30
070 21 x 30
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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