Carrier 40 - Schematic Diagrams Section; Schematic Diagrams Introduction

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5-1 62-10630

SECTION 5

SCHEMATIC DIAGRAMS

W ARNING

Beware of unannounced starting of the unit. The unit may cycle the fans and operating compressor

unexpectedly as control requirements dictate. To ensure unit will not start, place the EMERGENCY

SWITCH (see Figure 1-1) in the OFF position. To ensure unit is without power, remove power plug

and

remove battery negative cable.

5.1 INTRODUCTION

Schematic diagrams for the unit models listed in Table 1-1 are provided herein.

Main Page

First Aid3
Operating Precautions3
Maintenance Precautions3
Specific Warning and Caution Statements3
Safety Summary3
Table of Contents5
Description8
Introduction8
Figure 1-1 Integra 50S8
Table 1-1 Model Chart8
Figure 1-2 Condenser9
Figure 1-3 Control Box10
Figure 1-4 Start Box (Single Phase Only)11
Figure 1-5 Evaporator 3 Fans (Integra 50S)12
Figure 1-6 Evaporator 2 Fans (Integra 40S)13
Compressor Reference Data14
Refrigeration System Data14
Electrical Data14
Torque Values15
Table 1-2 Fuses15
Safety Devices16
Table 1-3 Safety Devices -- Microprocessor Controller16
Refrigerant Circuit During Cooling17
Refrigerant Circuit During Heat and Defrost17
Figure 1-7 Cooling Cycle18
Figure 1-8 Heat/Defrost Cycle19
Operation20
Inspection20
Connect Power20
Cab Command20
Keypad20
Figure 2-1 Cab Command20
Additional Key Functions21
Unit Operating Data LED Status21
Digital Display21
Starting22
Stopping22
Set-Point Adjustment22
Defrost Cycle Adjustment22
Sequence of Operation23
Perishable Mode23
Frozen Mode23
Configuration23
Figure 2-2 Operating Sequence -- Perishable Mode23
Figure 2-3 Configuration Button23
Alarm Display25
Low Battery Voltage Alarm25
Accessing Alarm Messages25
Clearing Alarm Messages25
Table 2-1 Error Messages25
Table 2-2 Alarm Messages25
Troubleshooting27
Introduction27
Table 3-1 Alarm Indications27
Refrigeration29
Unit will Not Cool29
Unit Runs but Has Insufficient Cooling29
Defrost Malfunction29
Abnormal Pressure29
Table 3-2 Mechanical Indications29
Abnormal Pressure30
Cooling30
Expansion Valve31
Table 4-1 Preventive Maintenance Schedule32
Table 4-2 Service Category Descriptions32
Service32
Figure 4-1. Belt Tension Gauge33
Evaporator Coil Cleaning33
Refrigerant Leak Checking34
Figure 4-2. Vacuum Pump Connection35
Charging the Refrigeration System35
Figure 4-3. Typical Setup for Testing Pressure Switches HP1, HP2 and HP336
Adding a Partial Charge36
Figure 4-4. Fan Motor Brushes37
Figure 4-5. Hot Gas or Condenser Pressure Control Solenoid37
Figure 4-6. Compressor Pressure Regulating Valve37
Checking and Replacing Condenser Fan Motor Brushes37
Figure 4-7 Thermostatic Expansion Valve Bulb and Thermocouple38
Adjusting the Compressor Pressure Regulating Valve (Cpr)38
Table 4-3 R-404A Temperature--Pressure Chart39
Schematic Diagrams40
Figure 5-1 Schematic Diagram -- Road Only42
Figure 5-2 Schematic Diagram -- Three Phase Stand by Units44
Figure 5-3 Schematic Diagram -- Single Phase Stand by Units46

Carrier 40 - Schematic Diagrams Section; Schematic Diagrams Introduction

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