Carrier 50TCA04-A07 Unit Arrangement And Access, General, Routine Maintenance, Air Conditioning

50TC

!WARNING

ELECTRICAL OPERATION HAZARD

Failure to follow this warning could result in personal injury or death.

Units with convenience outlet circuits may use multiple disconnects. Check convenience outlet for power status before opening unit for service. Locate its disconnect switch, if appropriate, and open it. Tag-out this switch, if necessary.

!WARNING

UNIT OPERATION AND SAFETY HAZARD

Failure to follow this warning could cause personal injury, death and/or equipment damage.

Puron (R-410A) refrigerant systems operate at higher pressures than standard R-22 systems. Do not use R-22 service equipment or components on Puron refrigerant equipment.

UNIT ARRANGEMENT AND ACCESS

General

Fig. 1 and 2 show general unit arrangement and access locations.

FILTER ACCESS PANEL

COMPRESSOR

ACCESS PANEL

OUTDOOR-AIR OPENING AND

INDOOR COIL ACCESS PANEL

C06023

Fig. 1 - Typical Access Panel Locations

BLOWER

ACCESS

PANEL

C07081

Fig. 2 - Blower Access Panel Location

Routine Maintenance

These items should be part of a routine maintenance program, to be checked every month or two, until a specific schedule for each can be identified for this installation:

Quarterly Inspection (and 30 days after initial start)

S Return air filter replacement

S Outdoor hood inlet filters cleaned S Belt tension checked

S Belt condition checked S Pulley alignment checked

S Fan shaft bearing locking collar tightness checked S Condenser coil cleanliness checked

S Condensate drain checked

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

S Condenser fan motor mounting bolts tightness S Compressor mounting bolts

S Condenser fan blade positioning

S Control box cleanliness and wiring condition S Wire terminal tightness

S Refrigerant charge level S Evaporator coil cleaning

S Evaporator blower motor amperage

Heating

S Power wire connections

S Fuses ready

SManual-reset limit switch is closed

Economizer or Outside Air Damper

S Inlet filters condition

S Check damper travel (economizer)

S 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 replaced or cleaned.

Return Air Filters

Return air filters are disposable fiberglass media type. Access to the filters is through the small lift-out panel

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