Table of Contents

TABLE OF CONTENTS
	PAGE
Speciﬁ cations	3
Performance Data	3
Component Operation & Testing	4
Compressors	4
Thermal Overload	4
Checking Compressor Efﬁ ciency	5
Fan Motor	5
Solid State Relay	5
System Control Switch	6
Run Capacitor	6
Thermostat	6
Low Ambient Bypass Valve	8
Sealed Refrigeration System Repairs	8
Hermetic Component Replacement	9
Special Procedure in the case of Compressor Motor Burn-Out	9
Rotary Compressor Special Troubleshooting & Service	10
Refrigerant Charge	10
Troubleshooting	11-13
Wiring Diagram	14
Cabinet Parts Diagram	15
Chassis Parts Diagram	16
Parts List	17-19

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Contents

Service & Parts Manual Table of Contents Performance Data Cooling Compressors Component Operation and TestingTesting Procedures Line Voltage Overload FAN Motor Test Ground TestChecking Compressor Efficiency Thermostat CAPACITOR, RUNCapacitor Test Range Test Equipment Must be Capable LOW Ambient Bypass Valve FigureSealed Refrigeration System Repairs Equipment Required Hermetic Component Replacement Special Procedures in the Case of Compressor Motor Burnout Rotary Compressor Special Troubleshooting and Service Refrigerant Charge Troubleshooting Problem Possible Cause To Correct Unit does not RUN Troubleshooting Problem Possible Cause To Correct FAN Motor does Wiring Diagram Models SH15L30-A, SH20L30-A, SH20L50-A Hazardgard Cabinet Parts Hazardgard Chassis Parts Hazardgard Parts List Description Part NO# Models Code Electrical Parts Optional Accessory Items Page Use Factory Certiﬁed Parts

Friedrich SH15L30-A, SH20L50-A, SH20L30-A manual Table of Contents