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McQuay
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Seasonpak ALR-035A
McQuay Seasonpak ALR-035A User Manual
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Table of Contents
Table of Contents
2
Introduction
3
General Description
3
Nomenclature
3
Inspection
3
Vibration Isolators
4
Clearance Around Unit
4
Isolator Loads
5
Isolator Locations
5
Spring Isolators
5
Water Piping
6
Flow Switch
6
Water Cooled Condenser Freezer Protection
6
Chilled Water Thermostat
6
Air Dimensional Drawings
7
Refrigerant Charge
8
Field Wiring
8
Compressor and Condenser Fan Motors
9
Voltage Limits
9
Typical Field Wiring Diagrams
10
Unit Layout & Principles of Operation
11
Major Component Locations
11
Top View of Unit
11
Control Center
12
Sequence of Operation
13
Unit Disconnect and Control Center Layout
13
Refrigerant Piping Schematic
14
Pumpdown Cycle
14
Electrical Legend
14
Power Schematic
15
Thermostat Circuit Schematic
26
Start-Up and Shutdown
38
Pre Start-Up
38
Start-Up
38
Temporary Shutdown
38
System Maintenance
39
Extended Shutdown
39
Electrical Terminals
39
Condensers
39
Service
40
Refrigerant Sightglass
40
Lead-Lag
40
Filter Driers
40
Evaporator
41
High Pressure Control
43
Low Pressure Control
43
Freeze Control
43
Fantrol - Head Pressure Control
43
Optional Controls
44
Speedtrol
44
Dampertrol
44
Factory Famtrol Settings
44
Part Winding Start
45
Low Ambient Start
45
Compressor Lockout
45
Hot Gas Bypass
46
Hot Gas Bypass Piping Diagram
46
Hot Gas Bypass Adjustment Range
46
Troubleshooting Chart
47
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McQuay Seasonpak ALR-035A Specifications
General
Model
ALR-035A
Category
Chiller
Cooling Capacity
35 tons
Refrigerant Type
R-22
Voltage
460/3/60
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