Unitec POS4000/V2-Wash Select II - Manual (Page 43)

P O S 4 0 0 0
Document Number: POS4007 17
Document Title: POS4000/V2 WSII Operations Manual
3.2.1 Relay Test
To check a specific relay on the interface board, you should close that relay by entering the
appropriate code at the customer keypad (while the board is in test mode). That relay will remain
on until another selection is made or until the board is put back into the normal mode of
operation. While the relay is on check continuity between the common and output connector
pins of the specific relay as follows:
Table 10. Relay Continuity Check for Common and Output Connectors
Relay Common Output
Wash Function Line 1 A8 B1
Wash Function Line 2 A8 B2
Wash Function Line 3 A8 B3
Wash Function Line 4 A8 B4
Wash Function Line 5 A8 B5
Wash Function Line 6 A8 B6
Wash Function Line 7 A8 B7
Wash Function Line 8 A8 B8
Re-enter Code Relay A7 A3
Code Accepted/Wait A7 A4
Enter Wash Relay A7 A5
Out-of-Service A7 A6
3.2.2 Input Test
To check any of the inputs on the interface board, enter the appropriate code at the customer
keypad. Then apply the appropriate voltage (120VAC or 24AC/DC) to the input being tested.
While the appropriate voltage is on the specific input being tested, the customer buzzer will beep
rapidly, while the voltage is off the customer buzzer beeps very slowly. If the optional customer
display is connected, the status of the input is displayed.
Note:
An LED on the interface board should light while voltage is present. The location of the
specific LEDs is shown in the "POS4000 Interface Board Wiring Diagram" in the back
of this manual.