DEMA® 80-77-4 Probeless Detergent Control DEMAMasterTM
This instruction sheet will describe the setup and operating procedure for the DEMA Probeless
Detergent Control Board. The full wiring diagrams and tubing hook up configurations for
DEMAMaster units can be found in the instruction sheets supplied with those units describing the full
assembly and DEMAMaster installation.
All installations must be in accordance with city, county, state or provincial electrical codes and be
performed by a certified electrician.
When hooking up the a control board or installing a DEMAMaster dispenser, all electrical power
must be turned off to the dish machine and any other circuit that is to be used for the installation.
Lockout and tag procedures should be observed when installing this device. Never open the
DEMAMaster unless power has been turned off. Signals may be present from dish machine, even
with the power turned off. Only use electrical code approved insulated wiring and electrical fixtures
with this installation
This control board is designed to deliver chemical product automatically to commercial dish machines.
To properly fit this control board into an application, it is necessary to understand that this board will
deliver a chemical product based on either counting operations (door type dish machine) or time for
continuos power (conveyor type dish machines).
The DEMA Probeless control board has the following features:
2 banks of DIP switches for configuration (see detergent calibration for details)
Requires 24VAC 50/60Hz input power for proper operation (24VAC power in terminals)
24VAC power out for powering an additional DEMA control board.
A 24VDC output for a pump/motor or solenoid valve
A coin cell battery type CR2032 for initial charge clock operation.
These features are shown on the photograph of the control board in this instruction sheet.
Detergent Calibration
For liquid detergent applications, it will be necessary to prime the pump system on the DEMAMaster,
prior to the calibration procedure described in this section. The system can be primed by pressing the
“Detergent Prime” button on the front of the DEMAMaster. The system is primed when the chemical
has filled the pump discharge tubing up the to injection point on the dish machine. This can only be done
while power is being supplied to the probeless detergent board.
Note: If Detergent Prime button is held less than 5
seconds, the pump or valve will run for the amount
time that has been set for initial charge or until
button is pushed again.
The detergent set up involves the use of the DIP switches
on the probeless detergent control board. There is a bank
of 6 and 8 switches located directly on the control board.
The detergent concentration should be setup so that the
desired level of concentration is maintained while dish
machine is being used. The concentration can be tested by
use of a titration test kit (DEMA P/N 81-53), not included.
If “X” is shown on a dip switch in the different
modes shown below, it indicates that the DIP
switch is not used in that particular mode!
I-811 Page 1 of 5
REV. B-37208 9/8/11
DEMA® 80-77-4 Probeless Detergent Control DEMAMasterTM
1. Door or Conveyor mode: 6 DIP Switch Bank, Switch 1
12345 6
OFF = Door Mode
421356
ON = Conveyor Mode
2. Initial Charge Time: Sets the amount of Initial Charge based on time. See switch diagrams below
for the DIP switch configuration.
0
5 SEC
4213567
8
543217
6
8
1 MIN 20 SEC
1 MIN 25 SEC
1234
543217
6
8
5
76
8
10 SEC
15 SEC
20 SEC
543217
6
8
5123476
8
543217
6
8
1 MIN 30 SEC
1 MIN 35 SEC
1 MIN 40 SEC
1234
1234
5
76
8
54321
6
7
8
5
76
8
25 SEC
30 SEC
35 SEC
40 SEC
1234
1234
1
5
6
7
8
5
6
7
8
5432
67
8
543217
6
8
1 MIN 45 SEC
1 MIN 50 SEC
1 MIN 55 SEC
2 MIN
1
234
1234
51234
6
7
8
54321
6
7
8
5
76
8
5
76
8
45 SEC
50 SEC
55 SEC
1
234
1234
5
76
8
5
76
8
54321
67
8
2 MIN 5 SEC
2 MIN 10 SEC
2 MIN 15 SEC
1
1234
5432
67
8
76
5
8
51234
76
8
1 MIN
1 MIN 5 SEC
1 MIN 10 SEC
1234
5
76
8
51234
6
7
8
54321
6
7
8
2 MIN 20 SEC
2 MIN 25 SEC
2 MIN 30 SEC
1234
54321
67
8
5
6
7
8
51234
6
7
8
1 MIN 15 SEC
5123476
8
2 MIN 35 SEC
54321
6
7
8
3A. Dead Cycle Count – Door Mode Only
Sets the amount of wash cycles (door operations) that will take place before a recharge will
occur. See table below for DIP switch configuration.
Example: If the Dead Cycle Count is set to 3, there will be three wash cycles where no detergent
th
will be added. On the 4
cycle a recharge will occur.
0 CYCLES
1 CYCLE
2 CYCLES
3 CYCLES
523416
4123 65
4132 65
523416
4 CYCLES
5 CYCLES
6 CYCLES
7 CYCLES
56
4321
2143
56
1
34
56
2
4321
56
I-811 Page 2 of 5
REV. B-37208 9/8/11
DEMA® 80-77-4 Probeless Detergent Control DEMAMasterTM
3B. Dwell Time Setting – Conveyor Mode Only
Sets the amount of time between a charge and a recharge. See table below for DIP switch
configuration. Example: Dwell Time is set for 1 min 30 sec. After the probeless control supplies
an initial charge or a recharge, 1 minute and 30 seconds must expire before the next recharge
will occur.
0
15 SEC
30 SEC
45 SEC
1 MIN
1 MIN 15 SEC
1 MIN 30 SEC
1 MIN 45 SEC
2 MIN
2 MIN 15 SEC
2 MIN 30 SEC
2 MIN 45 SEC
3 MIN
123 654
123 654
123
132
123 654
123
132
4213 56
4123 65
4123 65
4123 65
4
65
645
4123 65
4
65
645
432156
4 MIN
4 MIN 15 SEC
4 MIN 30 SEC
4 MIN 45 SEC
5 MIN
5 MIN 15 SEC
5 MIN 30 SEC
5 MIN 45 SEC
6 MIN
6 MIN 15 SEC
6 MIN 30 SEC
6 MIN 45 SEC
7 MIN
123 654
123
13
2
12365654
123 654
123
132
12365654
4123 65
4
65
645
432156
4132
4
65
645
4123 65
4123
3 MIN 15 SEC
3 MIN 30 SEC
3 MIN 45 SEC
12365654
4132
123 654
7 MIN 15 SEC
7 MIN 30 SEC
7 MIN 45 SEC
123 654
123
132
4
65
645
4. Recharge Time: Sets the amount of time that the pump or valve will operate to replenish
chemical product into the dish/cleaning machine wash tank. See diagrams below for DIP switch
configuration.
1 SEC
2 SEC
3 SEC
4 SEC
421356
7
8
543217
6
8
543217
6
8
51234 76
8
5 SEC
6 SEC
7 SEC
8 SEC
1234
1234
54321
6
7
8
5
76
8
76
5
8
54321
67
8
I-811 Page 3 of 5
REV. B-37208 9/8/11
DEMA® 80-77-4 Probeless Detergent Control DEMAMasterTM
5. Initial Charge Clock – Door Mode Only
This is used to provide an initial charge after a set amount of time expired without using the
DEMAMaster. See the table below for the DIP switch configuration. Example: Initial Charge
Clock is set for 2 hours. If no power has been supplied to the pro-bless control for at least 2
hours, the probeless control will provide an initial charge the next time power is supplied. This
feature is adjustable as shown in diagram below, while in door mode only. When the unit is in
the conveyor mode, the initial charge clock defaults to 1 hour.
15 MIN
2 HOURS
3 HOURS
4 HOURS
421356
432156
4321
2134
56
65
Note: When the coin cell battery (CR2032) is removed this will disable the initial charge clock. This
will cause the probeless control to deliver recharges each time it is powered up. It is possible to
deliver an initial charge anytime without the coin cell battery by pressing and releasing the
“Detergent Prime” switch on the front face of the DEMAMaster unit.
Operation
The user of the DEMAMaster only needs to perform the following:
- When changing to a new container of detergent, prime the pump by pressing and holding the
“Detergent Prime” until the pump and lines or primed.
- If dish machine tank is emptied and refilled, an initial charge can be delivered by pressing the
“Detergent Prime” button for less than 5 seconds.
Note: The DEMAMaster probeless board is designed with a 5-second delay when powered up. This
means that the detergent pump or valve will not operate until continuous power is supplied to the
board for at least 5 seconds.
80-77-4 Probeless Control Wiring Diagram
I-811 Page 4 of 5
REV. B-37208 9/8/11
DEMA® 80-77-4 Probeless Detergent Control DEMAMasterTM
24VAC Out For Auxiliary
Power To Another DEMA
Control Board
Coin Cell
Battery
Type CR2032
24VAC In
Power for
Control Board
24VDC Out For
Detergent
Motor Pump Or
Solenoid Valve
6 DIP Switch Bank
8 DIP Switch Bank
80-77-4 Probeless Control Board
Return Policy
No merchandise may be returned for credit without DEMA Engineering Company’s written permission. Return Merchandise
Authorization (RMA) number required in advance of return.
Warranty
DEMA products are warranted against defective material and workmanship under normal use and service for one year from the date of
manufacture. This limited warranty does not apply to products that have a normal life shorter than one year or failure and damage caused
by chemicals, corrosion, improper voltage supply, physical abuse or misapplication. Rubber and synthetic parts such as “O”-rings,
diaphragms, squeeze tubing and gaskets are considered expendable and are not covered under warranty. This warranty is extended only
to the original buyer of DEMA products. If products are altered or repaired without prior approval of DEMA, this warranty will be void.
Defective units or parts should be returned to the factory with transportation prepaid. If inspection shows them to be
defective, they will be repaired or replaced without charge. F.O.B. factory DEMA assumes no liability for damages. Return
merchandise authorization number to return units for repair or replacement must be granted in advance of return.
I-811 Page 5 of 5
REV. B-37208 9/8/11
Loading...