SECTION 5-2 TROUBLESHOOTING PROCEDURES - DIAGNOSTICS

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SECTION 5 -2 VALIDATOR PLUS TROUBLESHOOTING PROCEDURES - DIAGNOSTICS


II. SELF-DIAGNOSTICS CHECK

To run self check, simply turn on switch at back of unit, or depress Power and CLR/START at the same time. The latter operation does NOT check "lb" for low battery.

III. PRINTER (DIAGNOSTIC MODE)

The printer may be used as a diagnostic tool. Cycles recorded in the Validator Plus' memory may be dumped out to the printer starting with the last cycle first. Press and Hold the printer button to load the memory. Ti stop the download process, depress "CLR/START" (Eight lines are printed our per run cycle).

SELF DIAGNOSTICS
CHECK DISPLAYCOMPONENTS CHECKEDOPERATIONAL FUNCTION CHECKED
S-1Fill/Vent SolenoidSolenoid operation and electrical continuity. During fill, microprocessor senses that the Fill Solenoid driver is not activating or that the connection to this solenoid is broken
S-2Dump SolenoidSolenoid operation and electrical continuity
S-3-Bellows SolenoidSolenoid operation and electrical continuity
S-4Voltage Switch RelayMicroprocessor senses that the relay, which switches the heating elements from 120-volt operation to 240-volt operation, is not being activated
SS-1Steam SensorElectrical continuity and parameter check
SS-2Surface SensorElectrical continuity
SS-3Steam SensorSteam sensor defective
lbBatteryParameter memory for special mode (e.g., clock settings)
P-1Pressure TransducerNominal operating parameter. Checks operation of pressure transducer circuit
U-1Voltage Sensing TransformerElectrical continuity



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