Donaldson Torit Delta P Plus Control Installation And Operation Manual page 9

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