Zibro S 3225 Installationsanleitung Seite 99

Fig. 24
AIR PURGING (for S 32xx models)
Air and moisture that remain in the refrigerant system, e.g. after installation, can cause undesirable effects
or damage as indicated below:
• Pressure in the system rises.
• Operating current rises.
• Cooling or heating efficiency drops.
• Moisture in the refrigerant circuit may freeze and block capillary tubing.
• Water may lead to corrosion of parts in the refrigeration system.
• Damage of the compressor.
Therefore, the indoor unit and tubing between the indoor and outdoor unit must always be leak tested and
evacuated with aid of a vacuum pump to remove any noncondensables and moisture from the system.
PIPE LENGTH AND REFRIGERANT AMOUNT (for S 32xx models)
• When relocate the unit to another place, perform evacuation using vacuum pump.
• Make sure the refrigerant added into the air conditioner is in liquid form in any case.
• Only use the type of refrigerant as stated on the rating label.
ELECTRICAL SAFETY CHECK AND GAS LEAK CHECK
Electrical safety check
Perform the electric safe check after completing installation:
1. Insulated resistance
The insulated resistance must be more than 2MΩ.
2. Grounding work
After finishing grounding work, measure the grounding resistance by visual detection and grounding
resistance tester. Make sure the grounding resistance is less than 4 Ω.
3. Electrical leakage check (performing during test running)
Turn off the unit immediately if leakage happens. Check and find out the solution ways till the unit ope-
rate properly.
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