AHT Cooling Systems GmbH
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1.6 Specific hazards
1.6.1 Electrical voltage
Work on the electrical system may only be performed by qualified staff.
In the case of fault messages or damage to the device, contact the maintenance service immediately (see
→
Chapter 10.4).
WARNING
Contact with live parts may cause electric shock. Risk of fire due to sparks or overloading.
►
Do not connect any damaged devices or damaged parts (e.g. power cables) to the circuit.
►
Check the safety devices for completeness and functionality.
►
Guards and covers on the device must not be removed.
►
Before connecting to power, note the following:
- Applicable local electrical safety regulations
- Applicable standards and safety notices.
- Information on the power rating plate (see
→
Chapter 2.2.1).
►
In the case of damage to the device during operation and before maintenance work, observe
the following safety rules:
1. Disconnect the device (switch off all pins on all sides).
2. Secure the device against restarting.
►
Damaged parts must be replaced only by professionals, e.g.:
- power supply cables
- Changing of lamps (see
→
Chapter 10.2.2)
- Changing of batteries (see
→
Chapter 10.2.3)
►
Guards and covers on the device must not be removed.
►
Do not squeeze or bend power supply cords.
►
Do not use extension cords or multiple power strips.
►
Steam or high-pressure cleaners may not be used for basic cleaning (see
→
Chapter 10.1).
►
Concealed electrical parts must not be damaged. Drilling or other work on the device is not
permitted.
1.6.2 Refrigerant circuit
Work on the refrigerant circuit may only be performed by qualified staff.
In the case of fault messages or damage to the device, contact the maintenance service immediately
(see
→
Chapter 10.4).
WARNING
Work on the refrigerant circuit may only be performed by qualified staff.
Fluid refrigerant causes frostbite on the skin.
► Work on the refrigerant circuit must only be performed by qualified staff.
► Protect hands and face from contact with fluid/leakin
g refrigerant.
► Wear protective goggles and gloves.
NOTICE
•
Material, property and environmental damage
caused by damage to the refrigerant circuit.
►
Do not expose the device during storage and transport to temperatures higher than 70°C (158°F).
►
Avoid transmission of pulsations and vibrations to the device.
►
Avoid external force to the device such as careless movements with floor trucks or floor cleaning
machines.
►
Drilling or other work on the device is not permitted.
► Do not squeeze or bend pipes.
►
To accelerate the defrosting process, do not use any mechanical devices or other means (e.g.
scrapers) other than those recommended by the manufacturer.
►
Steam or high-pressure cleaners may not be used for the basic cleaning (see
→
Chapter 10.1).
1.6.2.1 Combustible refrigerant
Safety and warning notes for devices with combustible refrigerants.
WARNING
•
The refrigerant R-290 belongs to safety group A3 according to DIN EN 378-1.
The refrigerant used and the fill quantity are indicated on the power rating plate (see
→
Chapter 2.2.1).
•
The refrigerant is highly flammable.
