Helmer Scientic i.Series®Ultra-Low Freezer Service and Maintenance Manual
360173-A/C ii
Contents
1 About this Manual................................................................................................ 3
1.1 Safety Precautions and Symbols ...............................................................................3
1.2 Model and Input Power....................................................................................... 4
1.3 Product Labels .............................................................................................4
2 InstallationandConguration ...................................................................................... 5
2.1 Location Requirements....................................................................................... 5
2.2 Compressor Restraints ....................................................................................... 5
2.3 Placement and Leveling ......................................................................................5
2.4 Connect Back-up Power ......................................................................................6
2.5 Prepare for Monitoring .......................................................................................6
2.6 External Monitoring Devices ...................................................................................8
2.7 Back-up Refrigeration Systems (optional).........................................................................9
2.8 Back-up System Contacts.....................................................................................9
2.8 CongureStorage .......................................................................................... 10
3 Controls ........................................................................................................11
3.1 Home Screen and Screensaver ................................................................................11
3.2 Home Screen Functions ......................................................................................11
3.3 Alarm Conditions...........................................................................................12
3.4 Settings.................................................................................................. 13
3.5 Sensor Calibration..........................................................................................16
4 Maintenance.................................................................................................... 20
4.1 Alarm Tests ............................................................................................... 21
4.2 Upgrade System Firmware ...................................................................................23
4.3 Test and Replace Back-up Battery .............................................................................23
4.4 Defrost Ultra-Low Freezer....................................................................................24
4.5 Clean Ultra-Low Freezer.....................................................................................26
5 Service ........................................................................................................ 27
5.1 Refrigerant ...............................................................................................27
5.2 Chamber Temperature Sensor Error Recovery.................................................................... 27
5.3 Access Control Solenoid.....................................................................................30
5.4 Exterior Door .............................................................................................30
5.6 Casters ..................................................................................................31
6 Troubleshooting ................................................................................................ 32
6.1 General Operation Problems .................................................................................32
6.2 Chamber Temperature Problems .............................................................................. 33
6.3 Alarm Activation Problems ................................................................................... 35
6.4 Icing Problems ............................................................................................36
7 Parts .......................................................................................................... 37
7.1 Exterior Front and Door......................................................................................37
7.2 Interior Cabinet ............................................................................................ 38
7.3 Electrical Panel ............................................................................................ 39
7.4 Refrigeration Components and Exterior Rear..................................................................... 40
8 Schematics .................................................................................................... 41
8.1 Electrical Schematic ........................................................................................41
8.2 Refrigeration Schematic .....................................................................................42
Appendix A: Compliance............................................................................................. 43
Appendix B: Warranty ............................................................................................... 44
