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Table 10D — Prestart Alerts: These alerts only delay
Primary Message | Secondary Message | Alarm Message/Primary | Additional Cause/ | |||||
Cause | Remedy | |||||||
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Prestart Alert | Starts Limit Exceeded | STARTS EXCESSIVE Com- | Depress the RESET softkey | |||||
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| pressor Starts (8 in 12 hours) | if additional start is required. | |||||
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| Reassess | |
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| ments. | |
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Prestart Alert | High Motor Tempera- | MTRW VALUE exceeded limit | Check motor cooling line for | |||||
| ture | of [LIMIT]*. Check motor tem- | proper operation. Check for | |||||
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| perature. | excessive starts within a short | |||||
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| time span. | |
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Prestart Alert | High Bearing Tempera- | MTRB VALUE exceeded limit of | Check oil heater for proper | |||||
| ture | [LIMIT]*. Check thrust bearing | operation, check for low oil | |||||
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| temperature. | level, partially closed oil sup- | |||||
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| ply valves, etc. Check sensor | |
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| accuracy. | |
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Prestart Alert | High Discharge Temp | CMPD VALUE exceeded limit of | Check sensor accuracy. Allow | |||||
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| [LIMIT]*. Check discharge tem- | discharge temperature to | |||||
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| perature. | cool. Check for excessive | |||||
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| starts. | |
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Prestart Alert | Low Refrigerant Temp | ERT VALUE exceeded limit of | Check transducer accuracy. | |||||
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| [LIMIT]*. Check refrigerant tem- | Check for low chilled water/ | |||||
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| perature. | brine supply temperature. | |||||
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Prestart Alert | Low Oil Temperature | OILT VALUE exceeded limit of | Check oil heater power, oil | |||||
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| [LIMIT]*. Check oil temperature. | heater relay. Check oil level. | |||||
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Prestart Alert | Low Line Voltage | V P VALUE exceeded limit of | Check voltage supply. Check | |||||
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| [LIMIT]*. Check voltage supply. | voltage transformers. Consult | |||||
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| power utility if voltage is low. | |
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| Adjust voltage potentiometer | |
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| in starter for SMM voltage | |
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| input. | |
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Prestart Alert | High Line Voltage | V P VALUE exceeded limit of | Check voltage supply. Check | |||||
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| [LIMIT]*. Check voltage supply. | voltage transformers. Consult | |||||
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| power utility if voltage is low. | |
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| Adjust voltage potentiometer | |
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| in starter for SMM voltage | |
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| input. | |
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Prestart Alert | High Condenser Pres- | CRP VALUE exceeded limit of | Check for high condenser | |||||
| sure | [LIMIT]*. Check condenser | water temperature. Check | |||||
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| water and transducer. | transducer accuracy. | |||||
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*[LIMIT] is shown on the LID as temperature, pressure, voltage, etc., predefined or selected by the operator as an override or an alert.