Carrier 52C, P manual General Cleaning, Cleaning and Safety, Component Cleaning Schedule

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GENERAL CLEANING

Maintaining proper performance of 52C,P systems requires conscientious cleaning and care of compo- nents. See Figure 20. Specific components require periodic cleaning and/or replacement, including the following:

COMPONENT CLEANING SCHEDULE

Indoor Air Filter

Monthly

Vent Air Filter

Monthly

Indoor Coil

Seasonally

Indoor Fan

Seasonally

Outdoor Coil

Seasonally

CLEANING AND SAFETY

Before starting to clean a unit, read the instructions thoroughly and gather the necessary tools for the job. Review all safety information on unit and in literature.

Before cleaning, servicing, performing maintenance, or removing the chassis from the wall sleeve, discon- nect all power to the unit to avoid the possibility of electrical shock and personal injury. Only trained and qualified service personnel should perform installation and service procedures on these units. Untrained personnel may perform basic mainte- nance tasks such as cleaning and replacing filters. Refer to General Disassembly section of this manual for proper procedures to disconnect power to 52C,P units.

Consider the following safety issues before beginning:

New and unfamiliar tasks should be performed under the supervision of an experienced service technician.

Personal protective equipment, such as safety glasses and work gloves, should be used.

The floor around the work area should be clean and free of debris.

The 52C,P unit weighs up to 150 pounds. Use a lift- ing device or ask for assistance if the unit must be moved.

Make sure tools are the correct tools for the job, and that they are working properly and in good condition.

EXTERIOR GRILLE (ACCESSORY)

FRONT

 

 

PANEL

CHASSIS

WALL SLEEVE

(STANDARD)

(STANDARD)

(ACCESSORY)

 

FIGURE 20 — STANDARD 52C UNIT

 

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Contents Contents Service Technician GuideSummary of DANGERS, WARNINGS, and Cautions IntroductionDisconnect Power for CORD-CONNECTED Unit Unit DisassemblyDisconnect Power for Permanently Connected Hardwired Units Tools NeededRemove the Unit from the Wall Sleeve Open the Control BOXAccessing INDOOR-AIR Section Components Accessing Unit ComponentsAccessing OUTDOOR-AIR Section Components Remove the Discharge Deck AssemblyRemove the AIR Discharge Grille Ptac Unit with Lateral Duct Accessory InstalledGusset Removal Location of Screws on Discharge Grille Reinstall Front PanelGeneral Cleaning Cleaning and SafetyComponent Cleaning Schedule Cleaning the Outdoor AIR Vent Filter Monthly CleaningSeasonal Cleaning Cleaning the Indoor and Outdoor CoilsAccess and Clean Indoor FAN and FAN Scroll Ptac Exterior Surfaces Rotary Compressor Components CompressorCompressor Troubleshooting Disconnect ALL Power to the UnitBasic Hermetic Compressor Electrical Measurements Basic Compressor Troubleshooting Guide Compressor ReplacementSHORTED/OPEN Windings Test Strainer Capillary Tube Location Heaters Common Causes Heater FailureHeater Removal Acceptable Heater Resistance Values Disconnect ALL Power to UnitUNIT-MOUNTED Controls Operating ControlsWALL-MOUNTED Thermostat Controls Remote Thermostat TroubleshootingDo not daisy chain R 24 VAC NON-USER Adjustable Controls Description of Selector Switch Settings FigureComponent Operation and Troubleshooting Sequence of OperationTools Needed Indoor Thermostat IT CONTACTS, ALL 52CE, PE Models Indoor Thermostat IT CONTACTS, ALL 52CQ, PQ Models Capacitor Test Electrical Components Removal and ReplacementComponent Locations Open Control BOX FAN Motor Troubleshooting FAN MotorBasic FAN Motor Electrical Tests Typical 265 Volt Motors FAN Motor Troubleshooting Chart Typical 208/230 Volt MotorsLocation of Wiring Schematic On Front Panel of Control BOX FAN Motor ReplacementField Temperature Charts 100 110 120 130 52P 12,000 BTU Unit Field Temperature Chart High Cool 50% RH Indoor Series Indoor 52C,P Series Page 000 Btu 52P-12,000 Btu 52C-12,000 Btu 15,000 Btu Refer to Figures 68-72 for Typical Wiring Schematics Wiring DiagramsComponent Legend CAP Component Connection Marked Fan Motor Page Most Frequent Ptac Service Questions Accessory Form Number Part Number Description AccessoriesAmps 52C Performance and Physical Data52PE-512---3 52P Performance and Physical DataPage Page Copyright 2002 Carrier Corporation