Contherm MITRE 4150 - Page 45

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MANUALP/4000_SERVICE_0712 July2012

Typical solenoid layout. Note that some cabinet model that has 2 CO

solenoids would have similar mounting and parts. Wiring location on the

connecting block should be carefully noted.

Main Page

Contents5
Definition of Terms6
Introduction and Specifications7
Performance7
Temperature7
Relative Humidity8
Carbon Dioxide8
SPECIAL NOTE for COOLED Incubators8
Installation9
For Your Safety10
Operating Instructions11
Operating Controller11
To Set Temperature11
To Set the Co2 Concentration11
Confirmation of Operating Parameters12
Tropicool Units12
Cooled Units12
Condensation12
Alarms13
Standard Alarms13
Special Alarms13
Power Control and Hi-Limit Panel (Right Hand Side)14
Temperature Hi-Limit Thermostat14
Hi-Limit Neon14
On/Off Switch14
Operating Control Panel15
Up/Temp15
Down/Co215
Set15
Heat16
Inject16
Door16
Alarm16
Calibration17
Temperature Calibration17
CO2 Calibration18
Thermal Conductivity Sensor18
Auto-Cal18
Man-Cal19
Co2 Span Calibration19
Notes on Calibration Procedures for THERMAL CONDUCTIVITY Sensors20
CO2 Calubration - Infra-Red CO2 Sensor20
User IR CO2 Calibration20
Factory IR CO2 Calibration21
CO2 Zero Offset Calibration21
Verifying Cabinet Performance23
Temporal Performance23
Spatial Performance23
Theory of Operation24
Troubleshooting and Maintenance25
No Display When Mains Switch Turned On.25
Display on but Fan Motor Stopped25
Enclosure will Not Heat/Cool to Temperature25
Routine Maintenance26
Display Present - but Controller will Not Operate Correctly26
Display on but Showing Rubbish!26
Suggested to be Checked Annually26
Refrigeration System27
Refrigeration Schematic Diagram28
Refrigeration Unit Data28
Parts Lists29
Fault/Alarm Codes30
Under/Over Temperature30
Low CO2 in Enclosure30
Enclosure Running on Factory Preset Values30
CO2 Changeover31
Moderate Electrical Noise on Mains Power Supply31
Severe Electrical Noise on Mains31
Servicing / Replacing Parts32
List of Servicing Procedures32
Servicing Procedure33
Replacing the Main Fuse33
Safety Requirement33
Replacing the in Board Fuse & Checking Heartbeat LED34
Replacing the Motor Seal & Fan Motor36
Replacing the Infrared CO2 Sensor39
Infrared CO2 Kit43
Servicing the CO2 Solenoid44
Replacing the Inner Door Seal48
Earth Wire Revision for Display Ghost Issue on ZP22 Display50
CO2 Calibration for Infra-Red CO2 Sensor with Front Panel Adjustment54
User Calibration Procedure:55
Factory Calibration Procedure56
Replacing the Door Gasket62
Replacing the ZP22INT PCB64
Replacing the ZP22DSP Display PCB66
Replacing the Heated Glass Door68
Replacing the Temperature Sensor71

Contherm MITRE 4150 - Page 45

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