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Seasonal Maintenance
These items should be checked at the beginning of each season
(or more often if local conditions and usage patterns dictate):
AIR CONDITIONING
• Condenser fan motor mounting bolts tightness
• Compressor mounting bolts
• Condenser fan blade positioning
• Control box cleanliness and wiring condition
• Wire terminal tightness
• Refrigerant charge level
• Evaporator coil cleaning
• Evaporator blower motor amperage
HEATING
• Power wire connections
• Fuses ready
• Manual-reset limit switch is closed
ECONOMIZER OR OUTSIDE AIR DAMPER
• Inlet filters condition
• Check damper travel (economizer)
• Check gear and dampers for debris and dirt
AIR FILTERS AND SCREENS
Each unit is equipped with return air filters. If the unit has an
economizer, it will also have an outside air screen. If a manual
outside air damper is added, an inlet air screen will also be
present.
Each of these filters and screens will need to be periodically re-
placed or cleaned.
RETURN AIR FILTERS
Return air filters are disposable fiberglass media type. Access
to the filters is through the small lift-out panel located on the
rear side of the unit, above the evaporator/return air access
panel. (See Fig. 1.)
To remove the filters:
1. Grasp the bottom flange of the upper panel.
2. Lift up and swing the bottom out until the panel disen-
gages and pulls out.
3. Reach inside and extract the filters from the filter rack.
4. Replace these filters as required with similar replacement
filters of same size.
To re-install the access panel:
1. Slide the top of the panel up under the unit top panel.
2. Slide the bottom into the side channels.
3. Push the bottom flange down until it contacts the top of
the lower panel (or economizer top).
IMPORTANT: DO NOT OPERATE THE UNIT WITHOUT
THESE FILTERS!
OUTSIDE AIR HOOD
Outside air hood inlet screens are permanent aluminum-mesh
type filters. Check these for cleanliness. Remove the screens
when cleaning is required. Clean by washing with hot low-
pressure water and soft detergent and replace all screens before
restarting the unit. Observe the flow direction arrows on the
side of each filter frame.
ECONOMIZER INLET AIR SCREEN
This air screen is retained by spring clips under the top edge of
the hood. (See Fig. 3.)
To remove the filter, open the spring clips. Re-install the filter
by placing the frame in its track, then closing the spring clips.
Fig. 3 — Filter Installation
MANUAL OUTSIDE AIR HOOD SCREEN
This inlet screen is secured by a retainer angle across the top
edge of the hood. (See Fig. 4.)
To remove the screen, loosen the screws in the top retainer and
slip the retainer up until the filter can be removed. Re-install by
placing the frame in its track, rotating the retainer back down
and tighten all screws.
Fig. 4 — Screens Installed on Outdoor-Air Hood
17 1/4”
DIVIDER
BAROMETRIC
RELIEF
CLEANABLE
ALUMINUM
FILTER
FILTER
HOOD
FILTER
CLIP
OUT
S
IDE
AIR
Содержание Puron R-410A
Страница 29: ...29 Fig 44 RTU Open Overlay for Economizer Wiring ...
Страница 30: ...30 Fig 45 VFD Overlay for W2770 Controller Wiring ...
Страница 50: ...50 Fig 63 50KC Typical Unit Wiring Diagram Power 06A 208 230 3 60 ...
Страница 51: ...51 Fig 64 50KC Unit Wiring Diagram Control A06 ...
Страница 76: ...76 Fig B Unit Wiring Diagram Controls for Sizes A04 A06 208 230 1 60 208 230 3 60 460 3 60 575 3 60 ...
Страница 77: ...77 Fig C Unit Wiring Diagram Power for Sizes A04 and A06 208 230 1 60 ...
Страница 78: ...78 Fig D Unit Wiring Diagram Power for Size A05 208 230 1 60 ...
Страница 79: ...79 Fig E Unit Wiring Diagram Power for Sizes A04 A06 208 230 3 60 460 3 60 575 3 60 ...
Страница 80: ...80 APPENDIX F MOTORMASTER SENSOR LOCATIONS Fig F 50KC A04 Outdoor Circuiting Fig G 50KC A05 Outdoor Circuiting ...
Страница 81: ...81 Fig H 50KC A06 Outdoor Circuiting ...