AHT B 931B, Operating Manual

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AHT Cooling Systems GmbH
32
Table of contents
MODEL TYPES - OVERVIEW ................................................................ ................................................3
1 Safety ..................................................................................................................................... 33
1.1 General information for the manual and safety ..................................................................... 33
1.1.1 Limitation of liability ............................................................................................................... 33
1.2 Explanation of Symbols ......................................................................................................... 33
1.3 Intended use .......................................................................................................................... 34
1.4 Staff requirements ................................................................................................................. 35
1.5 Personal protective devices ................................................................................................... 35
1.6 Specific hazards .................................................................................................................... 36
1.6.1 Electrical voltage.................................................................................................................... 36
1.6.2 Refrigerant circuit................................................................................................................... 36
1.6.2.1 Combustible refrigerant ......................................................................................................... 36
1.6.3 Mechanical hazards ............................................................................................................... 38
2 Product description ................................................................................................................ 40
2.1 General information ............................................................................................................... 40
2.2 Technical data ....................................................................................................................... 40
2.2.1 Power rating plate and serial number .................................................................................... 40
2.3 Intended use .......................................................................................................................... 40
3 Layout and function ............................................................................................................... 41
3.1 Automatic defrosting .............................................................................................................. 41
3.2 Night blind/device lighting function ........................................................................................ 42
4 Operating and display elements ............................................................................................ 42
4.1 Temperature display .............................................................................................................. 42
4.2 Display status LED ................................................................................................................ 42
4.3 Control element and displays (device-specific) ..................................................................... 42
4.3.1 Alarm display and acknowledgment ...................................................................................... 42
4.4 Operation of Night blind/device lighting function ................................................................... 43
4.4.1 Operating element night blind/device lighting (only for R-134a devices) .............................. 43
4.4.2 Day/night switch (only for R-134a devices) ........................................................................... 43
5 Transport and storage ........................................................................................................... 43
6 Unpacking .............................................................................................................................. 44
7 Setup and installation ............................................................................................................ 44
7.1 Electrical connection .............................................................................................................. 46
7.2 Electrical protection ............................................................................................................... 46
8 Commissioning ...................................................................................................................... 47
9 Operation (use) ...................................................................................................................... 47
9.1 Loading .................................................................................................................................. 48
9.1.1 Loading of “ROLL-IN” devices ............................................................................................... 49
9.2 Decommissioning and recommissioning ............................................................................... 49
9.2.1 Decommissioning .................................................................................................................. 49
9.2.2 Recommissioning .................................................................................................................. 50
9.3 Faults in operation ................................................................................................................. 50
10 Maintenance .......................................................................................................................... 51
10.1 Cleaning ................................................................................................................................. 51
10.1.1 Basic cleaning ........................................................................................................................ 51
10.1.2 Glass cleaning (device-specific) ............................................................................................ 52
10.1.3 Main cleaning ......................................................................................................................... 53
10.2 Maintenance, service and repairs .......................................................................................... 53
10.2.1 Maintenance .......................................................................................................................... 54
10.2.2 Changing the lamps: .............................................................................................................. 54
10.2.3 Battery changing .................................................................................................................... 54
10.3 What to do if… ....................................................................................................................... 54
10.4 Maintenance services ............................................................................................................ 55
11 Disposal ................................................................................................................................. 55
EC CERTIFICATE OF CONFORMITY .................................................................................................. 56
EC CERTIFICATE OF CONFORMITY .................................................................................................. 57