Veris Technologies MSP EC and pH (1997-2008 floppy disk drive 1.02E) - Operating Instructions User Manual
Page 50
Veris Technologies
Pub. #OM MSP03-1
50
11. Electronic controller not functioning:
remove metal plate covering external controller and inspect the LED lights for following functions:
OVERVIEW
When the power is turned on and the pH controller is in automatic mode, LEDs D1, D2, D3, D10, and
D11 will light up. When the controller is switched to manual mode, LEDs D4 and D5 will light if the
wash switch is turned on; LEDs D6 and D7 will light if the manual hydraulic adjust switch is in the up
position; and LEDs D8 and D9 will light if the manual hydraulic adjust switch is in the down position.
Power is turned on but no LEDs are lit...
-Turn off pH controller.
-Check fuse at battery connection.
-Check all plugs for a secure fit and check cables for damage before turning on pH controller.
Power is turned on but only LED D1 is lit...
-Turn off pH controller.
-Remove cover from pH controller.
-Replace fuse F2 with supplied cylindrical fuse. Part #8496
-Check all power connections and check cables for damage before turning on pH controller.
Power is turned on but only LEDs D1 and D2 are lit...
-Turn off pH controller.
-Remove cover from pH controller.
-Replace fuse F1 with supplied miniature fuse. Part #22611
-Check all power connections and check cables for damage before turning on pH controller.
In manual mode, red LED (D4, D7, or D9) lights but green LED (D5, D6, D8) does not light when
switch is thrown for wash or hydraulics up/down...
-Relay supplying power to the water pumps or up/down solenoid is not receiving power
-The relay or another component on the board may be damaged and the pH controller needs to be
returned for repair. Contact Veris service department (785) 825-1978
In manual mode, red LED and green LED light when switch is thrown for wash or hydraulics up/down
but water is not sprayed or the sampling shoe does not move...
-The relay supplying power to the water pumps or up/down solenoid is functioning normally.
-Ensure that all pumps and solenoids are connected.
-See Section 2 above and follow troubleshooting flowchart.
LED
Description
D1
Main board power (Red)
D2
Fuse F2 (Green)
D3
Fuse F1 (Green)
D4
Water pumps relay coil (Red)
D5
Water pumps relay contact (Green)
D6
Up solenoid relay contact (Green)
D7
Up solenoid relay coil (Red)
D8
Down solenoid relay contact (Green)
D9
Down solenoid relay coil (Red)
D10
5V power 1 (Green)
D11
5V power 2 (Green)