Veris Technologies MSP3 - Operating Instructions - Manual (Page 101)

Pub. #OM17-MSP3
6-27
6. pH electrodes are not being cleaned of soil adequately
-check wash system in manual mode
—are both pumps operating properly?
-check alignment of wash jets
-check wash function operation while in automatic mode
-increase wash time in Controller set-up menu; this can be done either by selecting the extra
wash option, by extending the cycle time to 3 seconds
—or both.
7. Too many pH points are rejected
-check electrodes and wash system for adequate cleaning
-recalibrate the electrodes
10. Electronic controller not functioning:
remove metal plate covering external controller and inspect the LED lights for following
functions:
Figure 11.6
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 control hydraulic switch is in
the up position (raising sampler shoe); and LEDs D8 and D9 will light if the manual control
hydraulic switch is in the down position (lowering sampler shoe) .
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.
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)