Donaldson Torit Delta P Plus Control - Troubleshooting Continued

Delta P Plus Control
9
Problem Probable Cause Remedy
Delta P Plus arrow keys
do not work
Improper operation Press MENU and choose a parameter, then press SET
prior to using the arrow keys.
Programming keys disabled Remove the Program Disable jumper from Terminals 3
and 4 on TB2.
Cleaning light is ON,
but cleaning system not
functioning
Improper wiring Check wiring between the Delta P Plus Control and the
timer board, and between the timer board and solenoid
valve coils.
Defective solenoids Check all solenoid coil for proper operation.
Timer board not powered Check power ON light on timer board’s LED display. If not
illuminated, check the supply voltage to the timer board.
Check the fuse on the timer board. Replace if necessary.
Timer board defective If LEd is iluminated, observe the output display. Install a
temporary jumper across the pressure switch terminals.
Output LED’s should ash in sequence. Check ouput
using a multimeter set to 150 VAC range, measure from
SOL COM to a solenoid output. The needle will deect
when LED ashes for that output if voltage is present. If
LEDs do not ash, or if no voltage is present at output
terminals during ash, replace the board.
Downtime cleaning
too long or too short
duration
Parameter setup Reset the value in Parameter P10.
Pressure display
changes value up and
down rapidly
Parameter setup Reset the value in parameter P12.