Yazaki CH-K30 Operating Instruction
Also see for CH-K100: Installation instructions
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11WATER QUALITYIt is the End User’s responsibility to have thecooling water analyzed and chemically treated asoften as necessary so that it conforms to thelimits specified in Table 1. The water quality inthe chilled water, cooling water, and heat mediumcircuits shall not exceed the following limits:ITEM CHILLEDWATERCOOLINGWATER MAKE-UPWATERStandardpH (at 77°F) 6.8 - 8.0 6.5 - 8.2 6.8 - 8.0Conductivity (S/cm at 77°F) 400 800 300Chloride ion (Cl- ppm) 50 200 50Sulfate ion (SO42- ppm) 50 200 50M-alkalinity (CaCO3 ppm) 50 100 50Total hardness (CaCO3 ppm) 70 200* 70Calcium hardness (CaCO3 ppm) 50 150 50Ionic silica (SiO2 ppm) 30 50 30ReferenceTotal iron (Fe ppm) 1.0 1.0 0.3Copper (Cu ppm) 1.0 0.3 0.1Sulfide ion (S2- ppm) ND ND NDAmmonium ion (NH4+ ppm) 1.0 1.0 0.1Residual chlorine (Cl ppm) 0.3 0.3 0.3Free carbon dioxide (CO2 ppm) 4.0 4.0 4.0Ryzner stability index - 6.0 - 7.0 -NOTES:1. ND (Not Detectable)2. *Total hardness of make-up water shall not exceed 70 ppm when bleed off is the only method used to control water quality.Table 1 – WATER QUALITY REQUIREMENTSERROR CODESError CodeNumber Error Description Notes ResetTypeFS Flow switch alarmChilled/hot water flow switch FS1 open, but for lessthan 10 minutes. After 10 minutes, this changesautomatically to error code 27.Auto01 DCP power error Optional AroTrend remote monitoring package haslost power. Auto02 DCP communicationline shortPower available to the optional AroTrend remotemonitoring package but communications line isshorted.Auto03 DCP communicationline noiseOptional AroTrend Remote monitoring packagecannot communicate with the chiller-heater. Auto04 Accessory error Optional fire safety shutdown. Manual05 Chilled/hot waterpump interlock errorVoltage signal from terminal CM2 in the junction boxis not returning to terminal 3 in the junction box. Manual06 Cooling water pumpinterlock errorVoltage signal from terminal CM2 in the junction boxis not returning to terminal 4 in the junction box. Manual07 Cooling tower faninterlock errorVoltage signal from terminal CM2 in the junction boxis not returning to terminal 5 in the junction box. Manual08 Solution pump error Solution Pump overload THR1 has tripped. Manual09 Generator (HGE) overheat errorThe GP sensor has reported a temperature in excess of325.4°F (163°C). Unit locks out. Manual10 Generator (HGE)temp error GPSC has opened. Unit locks out. Manual |
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