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desmon GBF-5G - User Manual

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Service Manual
Blast Chiller

Table of Contents

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Summary

Desmon Blast Chiller Service Manual

Safety Precautions

General Safety Warnings

Essential safety warnings for installation, operation, and maintenance to prevent damage or injury.

Electrical Safety and Lockout;Tagout

Procedures and warnings for safe electrical connections, servicing, and lockout/tagout.

Repair Work Safety and Lockout;Tagout Procedure

Guidelines for safe repair work and detailed steps for the Electrical LOCKOUT/TAGOUT procedure.

Basic Service Diagnostic (Standard Controller)

Alarm and Failure List (Standard Controller)

List of alarm codes, their causes, and consequences for the standard controller.

Factory Parameter Settings (GBF-3 GN2;3)

List of factory default settings for various parameters on GBF-3GN2/3 and GBF Trolley Units.

Basic Service Diagnostic (Touch Screen Controller)

Alarm and Failure List (Touch Screen Controller)

List of alarm messages and their notes/consequences for touch screen controllers.

Factory Parameter Settings (5 PANS 115 V)

Factory default parameter settings for 5 PANS 115V units.

Factory Parameter Settings (5 PANS 230 V)

Factory default parameter settings for 5 PANS 230V units.

Factory Parameter Settings (SELF CONTAINED 230 V)

Factory default parameter settings for Self-Contained 230V units.

Factory Parameter Settings (TROLLEY)

Factory default parameter settings for Trolley units.

Troubleshooting

Probe Troubleshooting

General information on temperature sensing probes and troubleshooting common issues.

Checking the Probes for Faults

Procedure to check probe resistance and identify open circuits, shorts, or out-of-range readings.

Door Switch Function and Checking

Description of the magnetic door switch and how to test its functionality.

Pressure Switch Operation and Alarm Connection

Explanation of the pressure switch's role and its connection for alarm signaling.

Pressure Switch: Pump Down and Factory Settings

Details on pump down operation and factory set limits for the pressure switch.

Main Board (Standard Controller) and Relay Outputs

Overview of the standard controller main board and how to check relay outputs.

Main Board (Touch Screen Controller) and Relays

Description of the touch screen main board and its relay functions.

Checking Relay Outputs (Touch Screen Controller)

Procedure to check relay states and force activation using the touch screen interface.

Refrigerant Pressure Checks and Considerations

Guidelines for checking refrigerant pressures, considering various operational factors.

Service and Repair

Vacuum and Charge Procedure

desmon GBF-5G Specifications

General IconGeneral
CategoryBlast Chiller/Freezer
Dimensions (Depth)800 mm
Chilling Capacity (+90°C to +3°C)20 kg
RefrigerantR452A
Capacity5 x 1/1 GN
Voltage230 V

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