McQuay SEASONCON ALP-045C User Manual

Provides an overview of the McQuay ALP SEASONCON air cooled condensing unit's design and features.

Defines the standard model designation for the ALP series units.

Details the procedure for checking received equipment for completeness and damage.

Provides instructions for safely handling and lifting the condensing unit to prevent damage.

Specifies minimum clearances for proper airflow and service access.

Details requirements for accessing unit components for maintenance.

Guides the selection and location of spring isolators based on unit size.

Outlines best practices for refrigerant piping design and installation.

Details how refrigerant lines connect to the unit and recommended sizes.

Lists components included in liquid line accessory kits.

Describes the process for testing the system for refrigerant leaks.

Information on optional hot gas bypass kits and their function.

Details refrigerant charge requirements and the charging process.

Table relating pressure/vacuum readings to boiling points.

Provides physical specifications, capacities, and dimensions for ALP units.

Lists major components like compressors and their designations.

Covers compliance with codes, wire requirements, and power connection options.

Illustrates single and multiple point power wiring configurations.

Shows wiring for safety controls and compressor sequencing.

Provides wiring diagrams for 4, 6, and 8-stage thermostats.

Essential checks before initial unit startup.

Step-by-step guide for starting the unit for the first time.

Procedures for temporarily shutting down the unit.

Guidelines for putting the unit into extended shutdown.

Routine service checks including oil level and electrical terminals.

Instructions for checking and adding oil to compressors.

Guidance on cleaning air-cooled condensers.

How to interpret sightglass readings for refrigerant charge.

Steps for replacing the filter-drier assembly.

Maintenance and replacement of liquid line solenoid valves.

Procedure for adjusting and replacing expansion valves.

Details on safety controls like high/low pressure and motor protectors.

Description and settings for the high pressure safety control.

Description and settings for the low pressure pumpdown control.

Explanation of FANTROL system for head pressure management.

Function and purpose of the compressor lockout time delay.

Modulates fan speed for head pressure control at low ambient temperatures.

Explanation of unloaders controlled by suction pressure.

Bypasses controls to allow startup in low ambient conditions.

Protects motors from electrical issues like phase loss.

System for maintaining evaporator pressure at minimum values.

Details on HP control symbol, setting, reset, and location.

Details on LP control symbol, setting, reset, and location.

Information on motor protector symbol, setting, and reset.

FANTROL settings for cut-in/out pressures and ambient temperatures.

Settings for the compressor lockout time delay.

Identifies causes and corrective steps for a non-operating compressor.

Troubleshooting guide for compressor noise and vibration issues.

Diagnosing and resolving high discharge pressure problems.

Troubleshooting steps for low suction pressure conditions.

Diagnosing and correcting oil loss from the compressor.