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Problem 2 - Chilled-water temperature is high.
Vacuum problem
Generating hydrogen gas: 60%
Insufficient inhibitor
Pd cell is defective
Pd cell heater is defective
Air leakage: 30%
.
Insufficient air purging: 30%
Chilled water problem
Chilled-water flow rate is too high
Cooling water problem
Flow rate is inadequate: 30%
Cooling water pump control malfunctions.
Strainer is clogged.
Insufficient feed water.
Air in the cooling water line.
Cooling water temp. is too high: 50%
Ambient temperature and/or humidity are too high.
Cooling water control valve malfunctions.
Cooling tower water spray malfunctions.
Cooling tower fan malfunctions.
Cooling tower fan belt is broken.
Cooling water temperature control thermostat malfunctions.
20%
Partition plate in water box is removed.
Absorber and condenser tubes are fouled.
Solution problem
Insufficient absorbent flow rate: 30%
Solution flow rate is not adjusted properly.
Wrong inverter setting.
Check valve malfunctions.
Wrong damper adjustment.
Condensed refrigerant pipe connected between the low temperature generator and
condenser is clogged.
Heat transfer tubes in high/low temperature heat exchangers leak.
Heat exchanger is clogged with foreign material.
Insufficient refrigerant amount: 5%
Insufficient octyl alcohol: 10%
refrigerant contamination : 25%
Cooling water entering temperature is too low.
refrigerant blow-down is needed.
Heavy foaming condition in high temperature generator due to absorbent contamination with
foreign material.
Crystallization
Absorbent pump 1 cavitation: 25%
Solution flow rate is not adjusted properly.
Cooling water entering temperature fluctuates strongly
Vacuum condition in the chiller is poor.
Insufficient absorbent solution.
Insufficient octyl alcohol.
Ambient temperature is too low: 5%
Cooling water entering temperature is too low with insufficient air purging: 70%
Combustion problem (16DJ only)
Gas/oil flow rate is insufficient.
rank up set too low.
Air/gas/oil linkage has shifted to low combustion.
Gas supply pressure fluctuates.
Chilled water set too high.
temperature sensor is defective.
Microprocessor is defective
Electrical problem
Parts, setting position: 20%
Electric parts and sensors are defective.
Wrong setting on microprocessor and inverter.
Wrong position of select switches.
Solution level electrode malfunctions: 80%
Electrode surface is contaminated.
Electrode is defective.
teflon tube on electrode has been removed.
NOTe: The troubleshooting charts apply to all 16 series absorption chillers, and the service engineer should determine if the
failure mode is relevant to the specific machine.
