CIAT LN Serie Montage-, Betriebs- Und Wartungsanweisung Seite 27

Analyse, principaux
remèdes dépannage
Anomalies
Anomalies
6 - Défaut moteur
6 - Motor fault
7 - Température de sortie fluide froid
trop élevée
7 - Chilled fluid outlet temperature too
high high
Analysis, main repair
remedies
Causes probables
Possible causes
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S Motor starts too close, anti short cycling out of order
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S Thermic faulty or out of order
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S Supply voltage too low
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S Motor not cooled sufficiently
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S Faulty operation of intensity limiting device
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a) Avec pression d'aspiration supérieure à la normale
a) With intake pressure higher than normal
a) Bei erhöhtem Ansaugdruck
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S Regulating device setting point out of order
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S Thermal load higher than the one forecasted
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S Water flow too high
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S Electronic control not working
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S Chilled fluid inlet or condenser air temperature too high, the intensity
limiting device prohibits capacity increase.
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S Capacity variation assemblies faulty
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b) Avec pression d'aspiration inférieure à la normale
b) With intake pressure lower than normal
b) Bei zu niedrigem Ansaugdruck
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S Lack of refrigerant fluid
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S Faulty refrigerant fluid supply to the evaporator
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27
Analyse,
Störungsbehebung
Instructions
Instructions
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S Set the correct delay between two starts
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S Set or replace
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S Check the electrical installation and contact, if required, the power
supplying company
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S Check that nothing impedes motor cooling
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S Check the operation of capacity control relay driven by the limiting
device. Check and adjust, if necessary, the setting of the limiting
device.
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S Display the correct setting
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S Check the balances (or put on additional unit on line if available)
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S Adjust the flow according to forecasted value
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S Check operation of temperature and capacity controlers
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S Proceed as under 2 for the condenser
For the evaporator side : wait if the load is normal, the temperature will
decrease progressively
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S Check the capacity variation coils as well as the absence of leak on
the assembly
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S Locate the leak(s) and top up the load
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S Check the electrical and expansion valves and possibly the filter
dryer fouling.
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wesentliche