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B. S.A.F.E. SYSTEM DIAGNOSTIC CONDITIONS
In the event that the Phase 7 dual microprocessor controller (DMC) computer detects a fault in the Sensor
Activated Fire Extinguishing (S.A.F.E.) system, the Phase 7 DMC (computer) will display the message “S.A.F.E.
SYSTEM DISABLED…READY”. To find out the reason why the S.A.F.E. system disabled, press and hold the
“PAUSE” and “LO” keys; this will cause the Phase 7 DMC (computer) to display one (1) of the following
diagnostic messages:
OPEN THERMISTOR PROBE – This message indicates that the S.A.F.E. system thermistor probe is either
not connected or is damaged. If this condition is detected, the Phase 7 DMC (computer) will immediately enter
S.A.F.E. SYSTEM DISABLED Mode.
SHORTED THERMISTOR PROBE – This message indicates that the S.A.F.E. system thermistor probe is
damaged or the wiring is shorted. If this condition is detected, the Phase 7 DMC (computer) will immediately
enter S.A.F.E. SYSTEM DISABLED Mode.
DISCONNECTED WATER VALVE – This message indicates that the water valve is open or that it is not
connected to the Phase 7 DMC (computer). If this condition is detected, the Phase 7 DMC (computer) will
continue to monitor the condition for a period of 5 minutes before entering S.A.F.E. SYSTEM DISABLED
Mode. Once the condition is corrected, the Phase 7 DMC (computer) will continue to monitor the condition for
1 minute before exiting S.A.F.E. SYSTEM DISABLED Mode.
SHORTED WATER VALVE – This message indicates that the water valve is shorted or the wiring to the
valve is shorted. If this condition is detected, the Phase 7 DMC (computer) will continue to monitor the condition
for a period of 5 minutes before entering S.A.F.E. SYSTEM DISABLED Mode. Once the condition is corrected,
the Phase 7 DMC (computer) will continue to monitor the condition for 1 minute before exiting S.A.F.E. SYSTEM
DISABLED Mode.
WATER NOT CONNECTED – This message indicates that there is no water pressure at the water valve.
This will occur if water is not connected to the dryer or if there is low water pressure in the water line coming to
the dryer. This could also signal a defective pressure switch or wiring to the pressure switch. If this condition
is detected, the Phase 7 DMC (computer) will continue to monitor the condition for a period of 5 minutes before
entering S.A.F.E. SYSTEM DISABLED Mode. Once the condition is corrected, the Phase 7 DMC (computer)
will continue to monitor the condition for 1 minute before exiting S.A.F.E. SYSTEM DISABLED Mode.