9
Detergent Pumps - Signal Wiring and Programming
(continued)
Model D1TT - Dish Machine with One Solenoid (continued)
... the Initial Charge, you do not set the Initial Charge to the full value you need, but to that full value minus the Top-up dose
time.
Example:
If you need an Initial Charge of 70 seconds, and your Top-up dose is set to 15 seconds, then you actually
set the Initial Charge potentiometer to 55 seconds. (70 - 15 = 55)
The LED of a model D1TT can display three colors to indicate the various pump operation phases:
LED Color
Fixed or Flashing
Indication
Green
Fixed
The only time the LED should display as fixed green would be if the pump has reached the
Run / Shut off time and stopped, but the signal remained active.
Flashing
Flashing green indicates the pump is dosing. The pump runs at full speed for the set time.
Orange
Fixed
Fixed orange means the pump is in Priming Mode.
Flashing
You should not see the LED flashing orange, unless you are in Custom Programming Mode.
(If you do see the LED flashing orange, please contact Technical Support at Hydro Systems
Co.)
Red
Fixed
Fixed red indicates the signal is active, but the pump switch is on the standby/OFF position.
(See OFF Alarm in the Flashing text below.)
Flashing
Flashing red quickly (1 second on, 1 second off) is an alarm that the pump motor is jammed,
or if a level probe is in use, that the chemical supply is low.
Flashing red more slowly (2 seconds on, 2 seconds off) is the OFF Alarm, indicating the signal
has been active for over 600 seconds, while the pump switch is in the standby/OFF position.
2.OO installation
(continued)
Model D2TT - Dish Machine with Two Solenoids
Connect the Top-up signal cable to the solenoid valve for top-up/rinse.
When the top-up signal activates the pump will run (at full speed) for
the time programmed (0 to 30 seconds) on the upper right top-up dose
potentiometer. If the signal stops before the time setting is reached, the
pump will stop.
Connect the Fill/Initial Charge signal cable to the fill solenoid.
When the fill signal activates, the pump runs (at full speed) for the
time programmed (0 to 240 seconds) on the upper left initial charge
potentiometer. If the signal stops before the time setting is reached, the
pump will stop.
Top-up
Potentiometer
0 to 30 seconds
Model D2TT: Initial Charge and Top-up
Initial Charge
Potentiometer
0 to 240 seconds
0
0
30
240
CAUTION!
Notice the setting potentiometers are reversed in position from the D1TT to the D2TT
.
LED
