Carrier 38GS User Manual

Instructions for handling damaged or incomplete shipments.

Guidance on safely removing the unit from its packaging.

Recommendations for site survey before installation.

Notes on refrigerant charge for specific tubing lengths with Carrier evaporators.

Guidance for using non-Carrier evaporators and piping requirements.

Details on accessory tubing packages for various unit models and lengths.

Guidance on installing filter-driers in the system for specific units.

Detailed steps for making mechanical refrigerant line connections.

Requirements for installing a fused disconnect for branch circuit.

Guidance on routing power leads, ground, and control wiring.

Procedure for energizing the crankcase heater before starting.

Information on unit start-up delays from Time Guard or solid-state circuits.

Step-by-step guide for initiating unit operation.

Service procedures for PSC type single-phase compressors.

Troubleshooting and service for compressors with PTC start thermistors.

Procedure to check the resistance of the start thermistor.

Explanation of overload protection and reset behavior.

Steps for safely removing the compressor from the unit.

Steps for diagnosing improper unit operation.

Troubleshooting steps when contacts do not close.

Verifying wiring, connections, and transformer output voltage.

Steps to pump down the system for repairs without losing charge.

Overview of system charge adjustment based on evaporator type and tubing.

Procedure for using charging charts for thermal expansion valve systems.

Instructions for operating the Chargemaster device.

Steps to repair leaking mechanical or sweat refrigerant line connections.

Procedure for cleaning the condenser coil.

Instructions for removing and lubricating the condenser fan motor.

Common compressor problems and their potential causes.