DougMac.com
BDW-1-HD-BH-EL
14
PROGRAMMING
1827 PC Board
Technical Information
The controller is an open board construction intended to be installed inside of an electrical panel. The board
operates on nominal 120 VAC line.
The basic function of the board is to control the operation of the unit, going through a cycle of Wash, Rinse,
and then Fan (Dwell).
The six relays on the board control six outputs. One relay controls two of the outputs, and the sixth relay is a
master control relay.
The outputs include a ready light, a fan, a heater contactor, a wash pump motor contactor, a rinse solenoid
valve, and a fill valve.
Three potentiometers control Wash time: Short, Medium, and Long. Two switch inputs control which pot is
selected. The Long switch selects the long pot, the Medium switch selects the medium pot, and the Short
switch selects the short pot.
Routine Operation/Connections
Be aware that the board also controls a Fill cycle.
Note that the Fill cycle turns on the Fill valve and waits until the water level in the machine reaches the level
probe.
At this point, the Fill valve is left on for the pre-programmed time to fill above the probe and then turned off.
Setting the Times
To set times on the 1827 PC board, several steps are required:
Open the control box.
Locate the PC board, a device approximately 8” x 5” with 6 relays and a transformer.
The timer settings are located to the right of the transformer and are ½” blue squares with a white dial. They
are labeled Long, Medium, Short, and Rinse
To decrease the time, turn the timer counter-clockwise.
To increase the time, turn the timer clockwise.
Factory Settings
C
yCle
D
uration
Rinse
30 Seconds
Long
8 Minutes
Short
4 Minutes
Note that the Rinse pot is fixed @ 30 sec. for NSF, and that non-NSF Rinse time is adjustable.
