American Dryer Corp AD-15 Phase 7 installation manual Non-Coin

WARNING:

!If the water in the supply line or water solenoid valve freezes, the S.A.F.E. system will be

INOPERATIVE!!

The manual ball cock shutoff valve must be located outside of the dryer at a distance from the dryer where it is easily accessible.

Electrical Requirements

No independent external power source or supply connection is necessary. The 24 volt power to operate the S.A.F.E. system is accomplished internally in the dryer (from the dryer controls).

WARNING:

!Electrical power must be provided to the dryer at ALL times. If the main electrical power supply to the dryer is disconnected, the S.A.F.E. system is INOPERATIVE!!

S.A.F.E. SYSTEM THEORY OF OPERATION

While the dryer is in an idle state, or 20-seconds after the heat turns off, the Phase 7 control monitors the thermistor probe, located in the top of the basket (tumbler) chamber, and records the minimum temperature. If the minimum recorded thermistor probe temperature is greater than 120° F (48° C) and the control detects a 50° rise in temperature, this will be the trip point and the S.A.F.E. system routine will activate.

While a drying cycle is in process and the heat has turned on at least once, the Phase 7 control monitors the exhaust temperature transducer. If the drying cycle temperature set point is set greater than 160° F (71° C) and the control detects an exhaust temperature rise 25° F greater than set point, this will be the trip point and the S.A.F.E. system routine will activate. If set point is below 160° F (71° C), the trip point will be 185° F (85° C).

Once the S.A.F.E. system routine is activated, the control will display “S.A.F.E. SYSTEM ACTIVATED” and water will be injected into the basket (tumbler) chamber. Any time water is being injected into the basket (tumbler), the basket (tumbler) drive will turn the load for 1-second every 15-seconds. This process will continue for a minimum of 2 minutes. After the 2 minutes have elapsed, the control will check if the temperature remained above trip point; if so, the water will remain on. The control will continue to check if the temperature is above trip point every 30-seconds. If the water has been on for a constant 10 minutes, the water will be turned off, regardless of the temperature, and the control will display “S.A.F.E. SYSTEM WAS ACTIVATED.” If the temperature has dropped below trip point, the control will turn off the water prior to 10 minutes.

SYSTEM RESET

After the microprocessor determines that the situation is under control and shuts the water being injected into the basket (tumbler) off, the microprocessor display will read “S.A.F.E. SYSTEM WAS ACTIVATED,” and the horn/tone will sound until reset manually.

NON-COIN– To reset the microprocessor once the control displays “S.A.F.E. SYSTEM WAS ACTIVATED,” press the red “STOP/CLEAR” key on the keyboard (touch pad).

COIN – To reset the microprocessor once the control displays “S.A.F.E. SYSTEM WAS ACTIVATED,” press and hold the red “PAUSE” key for 3-seconds on the keyboard (touch pad).

S.A.F.E. SYSTEM WATER VALVE CHECK

The operation of the water solenoid valve can be tested to ensure that the water supply system and valve are functional. Before attempting a system check, be sure that ALL water supply shutoff valves to the dryer are in the OPEN position; the dryer must be in the “READY” mode with no cycle loaded or in progress.

NON-COIN

•Press and hold the red “STOP/CLEAR” key (while in “READY” mode and no cycle is in progress).

•Press and hold the “A” key.

•Water valve will open and water will be dispensed

into basket (tumbler) area as long as both keys are held.

The Phase 7 non-coin microprocessor controller (computer) will prompt the user to perform a S.A.F.E. system valve check at every 4000 hours to ensure proper functionality. At the 4000 hour mark, the control will wait for end of the cycle and then will prompt the user to “PLEASE EMPTY TUMBLER,

THENPRESSTHE ‘STOP/CLEAR’ AND ‘A’ KEYS TO TEST THE WATER VALVE.” When the ‘STOP/CLEAR’ and ‘A’ keys are pressed, the control will activate the S.A.F.E. system water valve for 2-seconds, at which point the control will prompt the user with the following message: “IF WATER DID NOT TURN ON, CALL FOR SERVICE. THANK YOU.”

	NOTE:
!	The control will not let the user continue until
	the valve test has been completed.

COIN

While the control is in the program mode, Press and hold the PAUSE key for 3-seconds to get into the valve test mode. Valve test mode: The control will display “PRESS AND HOLD MEDIUM TO OPEN WATER VALVE”. When the medium key is pressed, the control will activate the water output

S.A.F.E. SYSTEM DIAGNOSTICS

NON-COIN – In the event that the Phase 7 non-coin microprocessor controller (computer) detects a fault in the S.A.F.E. system, the control will display the message “S.A.F.E. SYSTEM DISABLED…READY.” To find out why the S.A.F.E. system is disabling, press and hold the red “STOP/CLEAR” and green “START” keys. This will cause the control to display a diagnostic message, as detailed in the “S.A.F.E. SYSTEM Diagnostics Messages” section.

COIN – In the event that the Phase 7 non-coin microprocessor controller (computer) detects a fault in the S.A.F.E. system, the control will display the message “S.A.F.E. SYSTEM DISABLED…READY, INSERT XX TO START.” To find out the reason for the S.A.F.E. system disabling, press and hold the red “PAUSE” and “LOW” keys. This will cause the control to display a diagnostic message, as detailed in the following section.

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