SERVICE MANUAL
Medi-Therm II
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CONTENTS
i
CONTENTS
Table
Description
Page
1
High Temperature Limits .......................................................................... 25
2
RFU Error Codes ........................................................................................ 35
3
Service Modes ............................................................................................. 36
4
Celsius/Fahrenheit Conversion ................................................................. 65
5
Temperature vs. Resistance ....................................................................... 66
6
Operator Controls/Indicators ................................................................... 69
7
Parts List (base) .......................................................................................... 75
8
Parts List (head) .......................................................................................... 76
9
Control/Display Board Parts List ................................................................ 83
10
Power Supply Board Parts List ................................................................... 84
TABLES
Section
Description
Page
1.0
PATIENT SAFETY .................................................................................... 1
2.0
MACHINE PRECAUTIONS ...................................................................... 3
3.0
REPAIR POLICY ........................................................................................ 4
3.1
In-Warranty Repairs ........................................................................... 4
3.2
Out-of-Warranty Repairs ................................................................... 4
4.0
SPECIFICATIONS ..................................................................................... 5
4.1
Physical Specifications ........................................................................ 5
4.2
Thermal Specifications ....................................................................... 5
4.3
Electrical Specifications ...................................................................... 6
5.0
PROBE INFORMATION ........................................................................... 7
6.0
THEORY OF OPERATIONS .................................................................... 9
6.1
Machine ................................................................................................ 9
6.2
Interconnections ................................................................................. 11
6.3
Power Supply ....................................................................................... 12
6.4
Machine Functions .............................................................................. 12
7.0
FUNCTIONAL CHECK, SAFETY INSPECTION,
PREVENTIVE MAINTENANCE .............................................................. 18
7.1
Receiving Inspection ........................................................................... 18
7.2
Cleaning Procedures ........................................................................... 18
7.3
Functional Check & Safety Inspection .............................................. 20
7.4
Inspection Form .................................................................................. 33
8.0
TROUBLESHOOTING & SERVICE MODES .......................................... 34
8.1
Service Modes ...................................................................................... 34
8.2
Troubleshooting Charts ..................................................................... 38
9.0
REPAIR PROCEDURES ............................................................................. 57
9.1
Refrigeration System .......................................................................... 57
9.2
Replacing the Power Supply Board ................................................... 60
9.3
Replacing the Control/Display Board ................................................ 61
9.4
Replacing the Top Cover .................................................................... 62
9.5
Replacing Thermostats ....................................................................... 62
9.6
Cleaning the Flow Switch ................................................................... 63
9.7
Replacement Parts .............................................................................. 64
9.8
Shipping/Repacking Instructions ........................................................ 64
10.0
REFERENCE TABLES ............................................................................... 65
10.1
Celsius-Fahrenheit Conversion .......................................................... 65
10.2
Temperature vs. Resistance ............................................................... 66
11.0
SERVICE INFORMATION ........................................................................ 67
