DOUGLAS MACHINES CORP. LD-20-PT Operation Manual - Page 16
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PROGRAMMING THE TOUCH PAD PC BOARD
Before starting the programming, make sure the 120 volt service is turned on and
there is no water in the wash tank. With the control voltage turned on, the colon
on the touch pad display will be illuminated and flashing.
To initiate programming, depress the stop button, then depress the power button
by holding both buttons at the same time until you hear a beep and see four 0's
(0.00:0) on the display. At this point the machine will automatically fill with water
until the level reaches the probe. After this, you may begin the programming. The
programming for the fill of the wash tank will be first, and could be the only
function you need to program. All other functions have been factory preset.
Initiate Auto Fill by depressing the long cycle button. The fill process will start and
the display timing will begin. After the water level has reached overflow, depress
the medium cycle button. This will stop the flow of water and display timer. Next,
depress the short button to enter the programmed time into the PC Board.
After programming the wash tank fill, depress the short button to scroll through
the remaining functions either to exit the program mode or make any changes to
the following functions. In order to exit the program mode, you may scroll through
the remaining functions or depress the stop button for two seconds.
1. Auto Fill Time
2. Heater Delay (preset at 15 seconds)
3. Short Wash Cycle Time (preset at 4 minutes)
4. Medium Wash Cycle Time (preset at 6 minutes)
5. Long Wash Cycle Time (preset at 8 minutes)
6. Rinse Time (preset at 30 seconds)
7. Dwell and Fan Time (preset at 1 minute)
The settings on these functions can be changed while viewing the preset times.
Depressing the medium cycle button will decrease the time. Depressing the long
cycle button will increase the time. After any change has been made, you must
depress the short button to enter the change.
If an error code is present on the display, you must identify the error, resolve the
problem and clear the error code from the PC Board. To clear error codes from
the touch pad display depress the stop button. Error codes are as follows:
1. Er01: The machine has exceeded the allowable fill time, indicating low
incoming water pressure
2. Er02: The stop button has been pressed during the wash cycle
3. Er03: Excessive water loss during operation
4. Er04: Control board error, may need reprogramming
5. Er05: Operation of the machine has been attempted without adequate
water in the wash tank
6. Er06: Door has not closed properly
7. Er07: Pump overload device has been tripped
Douglas Machines Corp.
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