Dema 581L-1W Installation Manual

DEMA SOLID PRODUCT LAUNDRY MASTERTM

MODEL: 581L-1W and 581L-2W

INSTALLATION INSTRUCTIONS

Included Parts:

A. 581.1 Solid Bowl
B. 58.1LA Vacuum Breaker
C. 58.6 Stainless Steel Supply Tube
D. 58.29 90º Compression Fitting
E. 58.24 Straight Compression Fitting
F. 58.7 Vinyl Discharge Tube

System Overview

The DEMA 581L Laundry Master is designed for long reliable use with simplicity in mind for both the installer
and user. The system is based on the DEMA solid bowl. The valve and electronics are installed in a heavy
plastic tray that id sealed by use of a gasket. The control board is programmable and will accept trigger signals
from a laundry machine or from the DEMA Remote Control Kit (83-R1).

Please read all instructions before proceeding with Laundry Master installation.

Laundry Room Survey

A complete survey of the laundry room or sight installation should be completed in advance of starting the Laundry Master installation.

1. Locate the power connection points on the laundry machine. This power must be between 95 and 250 volts

50/60Hz.

2. Select location to mount the Laundry Master on a wall that will allow access to the chemical product feed

point on the laundry machine. Laundry Master should be kept away from moisture releasing machinery and
from water being splashed on the unit.

3. Use appropriate wall anchors when mounting the Laundry Master on dry wall.

Electrical Installation
All installations must be in accordance with city, county, state or provincial electrical codes and be
performed by a certified electrician. For questions, please contact local licensed electrical contractor.

1. All electrical power must be turned off to the laundry machine and any other circuit that is to be used for

this installation. Lockout and tag procedures must be observed when installing this device. Never open the
DEMA Laundry Master while power is applied. Signals may be active from laundry machine, even with the
DEMA Laundry Master power turned off. Use appropriately rated insulated wiring , electrical fixtures and
other materials that meet all applicable electrical and building codes.

2. Connect the power to the Laundry Master. This may be 120VAC, 208VAC or 240VAC. Power should be

applied to Laundry Master anytime the laundry machine is on. Some laundry machines have a terminal
block setup for power, see schematic or owners manual for the specific machine being used. Locate the
power terminal block inside the Laundry Master enclosure. Connect “hot” or “live” wire to the terminal
labeled “line”. Connect the “return line” to the appropriate terminal block position based on supply
voltage. The power line should be secured by use of proper electrical fitting through access knockout in the
Laundry Master enclosure. The power line must also be secured properly between the laundry machine or
power source and Laundry Master.

G. 66.123 Screw & Anchor Kit
H. 58.78 Adapter
I. 58.117 Equipment Tray Lid
J. 58.58 LDPE Supply Tubing
K. 58.75 Timer Tray Assembly

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DEMA SOLID PRODUCT LAUNDRY MASTERTM

MODEL: 581L-1W and 581L-2W

INSTALLATION INSTRUCTIONS

3. Connect the trigger signal output to the Laundry Master. The trigger signal may be between 24VAC and

240VAC. Some laundry machines are equipped with a terminal block that is designed to feed this signal.
Locate the trigger connection points on the circuit board inside the Laundry Master enclosure. Run
appropriate wiring between the laundry machine trigger connection points and the Laundry Master trigger
connection points. Trigger lines should be properly secured by use of proper electrical fitting through
access hole in the side of the Laundry Master enclosure. The signal line must be properly secured between
the laundry machine and Laundry Master enclosure such that it does not put stress on the Laundry Master.

Assembly and Connections
WEAR PROTECTIVE CLOTHING AND EYEWEAR WHEN WORKING WITH CHEMICALS.
Note: All installations must adhere to all applicable plumbing codes.

A. The bowl and timer-tray are loosely assembled. Remove the adapter, which is on the bowl outlet in the

recess of the timer tray. This will allow the bowl, tray, and equipment tray lid to be separated.

B. Connect the power as indicated above.
C. A lockout feature is available for setting a lockout time between the timer’s feed operations. This time is set

via four DIP switches on the control board (see Figure 3 for switch location).

Lockout Time Switch 1 Switch 2 Switch 3 Switch 4

0 Minutes OFF OFF OFF OFF
5 Minutes ON OFF OFF OFF
10 Minutes OFF ON OFF OFF
15 Minutes ON ON OFF OFF
20 Minutes OFF OFF ON OFF
25 Minutes ON OFF ON OFF
30 Minutes OFF ON ON OFF
35 Minutes ON ON ON OFF
40 Minutes OFF OFF OFF ON
45 Minutes ON OFF OFF ON
50 Minutes OFF ON OFF ON
55 Minutes ON ON OFF ON
60 Minutes OFF OFF ON ON
65 Minutes ON OFF ON ON
70 Minutes OFF ON ON ON
75 Minutes ON ON ON ON

D. Jumper Installation, see figure 1, 2, and 3 for proper jumper setting.

• When the jumper is in the off position the board is setup for receiving triggers from the laundry machine

(See Figure 2).

• When the jumper is in the on position, the control board is setup to operate using the DEMA optional

remote kit (See Figure 1).

E. With the batteries and or AC adapter installed and the jumper set put the equipment tray lid on the timer tray

assembly. Be sure the side marked “This Side Up” is up.

F. Place the timer tray on the bottom of the bowl. It should fit snugly over the bowl outlet and against the

bottom of the bowl. Secure it in place with the adapter on the outlet fitting of the bowl.

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DEMA SOLID PRODUCT LAUNDRY MASTERTM

MODEL: 581L-1W and 581L-2W

INSTALLATION INSTRUCTIONS

G. Using Teflon tape, install the 90º compression fitting in the outlet of the vacuum breaker. Repeat this

procedure with the straight compression fitting in the inlet.

H. Install the stainless steel supply tube in the compression fitting on the top of the bowl. Install the other end

of the stainless steel supply tube in the 90º compression fitting on the vacuum breaker. Tighten both fittings.

I. On the bottom of the timer tray is a solenoid valve. The outlet fitting is a straight plastic compression

fitting. Connect the LDPE supply tubing from this fitting to the inlet fitting of the vacuum breaker. Tighten
these fittings.

J. Attach the vinyl discharge tube to the adapter at the bottom of the bowl. The tube slips over the barb end. It

may be necessary to run hot water through the vinyl tube to soften it and make installation easier.

K. Locate a clear position on the wall for mounting the bowl and timer combination. This should be as nearly

directly above the point of use for the dissolved chemical as possible. Drill holes approximately 1” deep in
the wall to match the mounting holes of the bowl. If the wall is tile or masonry, use a ¼” masonry bit.

L. Mount the bowl and timer to the wall using appropriate mounting screws and anchors. The bowl should be

mounted below eye level if possible.

M. Connect the water supply to the 90º compression fitting on the inlet of the solenoid valve on the bottom of

the timer tray. THE WATER TEMPERATURE SHOULD NEVER EXCEED 160º FAHRENHEIT.

N. When you have made sure all fittings are tight, turn on the water.
O. Place a chemical capsule in the bowl. WARNING: Proper safety clothing and eye ware must be worn

while handling chemicals.

Programming and Operation

When a trigger signal is received the control will run its program. A two-second delay will occur to make sure
the trigger is not a false signal. The control will then enter a user programmable delay time to allow the wash
machine time to fill before adding chemical. At the end of this delay the dispenser will run for a user
programmable time. The control will then lockout, preventing re-triggering for a user selectable period of time.

Programming

It is helpful to know the amount of chemical product to be dispensed before programming the Laundry Master.
To assure that a specific application is satisfied, it is recommended that the output rate of the specific chemical
product be measured by use of a graduated cylinder.

The programming function will set the delay time and the amount of time that the pump will run when a trigger
signal is received from the laundry machine.

1. Note that the front face of the Laundry Master has a button labeled “

labeled “CHARGE”.

2. Press and hold the “PROG/PRIME” button to activate the programming function. The “CHARGE” light will

illuminate. Continue holding the button for about 8 seconds until charge light goes out, turns on, and then
begins flashing. Release the button.

3. The “

CHARGE” light will continue to flash. The delay time is now being recorded. This time can be set

between 0 and 4 minutes 15 seconds.

Note: The delay time has been extended on some new units to have a maximum setting of 60 minutes.
To identify if the unit to be programmed has this capability look for a label on one of the components
on the circuit board that reads V6.0. If the label reads anything but V6.0 it only has a maximum
delay time setting of 4 minutes and 15 seconds.

PROG/PRIME” and a round window

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DEMA SOLID PRODUCT LAUNDRY MASTERTM

MODEL: 581L-1W and 581L-2W

INSTALLATION INSTRUCTIONS

4. Press the “PROG/PRIME” to stop the delay time. The pump will begin to run. The pump run time is now

being recorded. The minimum amount of time is 10 seconds and the maximum amount of time is 4 minutes
and 15 seconds.

5. Allow Laundry Master to pump for the desired amount of time. Push the “

amount of time and exit the programming function.

Testing the Program

Pressing and holding the “
Continue holding the button for about five seconds until charge light goes out. Release the button. Then press
and release “PROG/PRIME” button within ½ second. The “CHARGE” light will illuminate indicating the program
is running. It will stay illuminated for the delay time. The light will be illuminated and the dispenser will run
for the programmed time. The lockout time will be ignored at the end of the test.

Priming

The prime function will run the dispenser for the length of time that the “PROG/PRIME” button is pressed.
Pressing and holding the “PROG/PRIME” button activates the prime function. The “CHARGE” light will
illuminate. Continue holding the button for about five seconds until charge light goes out. Release the button.
Then press and hold “PROG/PRIME” button for as long as needed to prime the system.

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 any products which 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 rubber 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.

PROG/PRIME” button activates the test function. The “CHARGE” light will illuminate.

PROG/PRIME” button to set that

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DEMA SOLID PRODUCT LAUNDRY MASTERTM

MODEL: 581L-1W and 581L-2W

INSTALLATION INSTRUCTIONS

Figure 1 Figure 2

DIP SWITCHES

JUMPER (SEE
FIGURE 1 AND 2)

HOOK UP TERMINALS

Figure 3

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DEMA SOLID PRODUCT LAUNDRY MASTERTM

MODEL: 581L-1W and 581L-2W

INSTALLATION INSTRUCTIONS

19

20

17

18

21

22

23

(FOR 581L-1W)

12

(FOR 581L-2W)

10

1

3

4

11

9

2

5

6

7

13

8

14

15

16

WALL MOUNTING

NO.

1 41-9-5-4 Solenoid Coil
2 44-116-1 Screw #8-18 X ½” Lg. (2 Req’d)
3 44-116-2 Screw #8-18 X 3/8” Lg. (2 Req’d)
4 41-75 Bracket
5 41-7-25 Enclosing Tube (Stainless)
6 41-1-8-3 Kick-off Spring
7 41-10-11 Plunger
8 41-15-7 Diaphragm

9 41-59-1 Valve Body
10 66-119-18 ½“ Hose Barb (For 581L-1W)
11 63-32 Swivel Adapter Assy.(For581L-2W)
12 100-38 Strainer Washer
13 58-24 Compression Fitting
14 41-36-1 Strainer Screen
15 21-8 O-Ring Seal, Buna
16 41-60 Screen Cap

PART

NO.

DESCRIPTION

NO.

PART

NO.

DESCRIPTION

17 66-123 Mounting Screw & Anchor Kit
18 58-19-6 Solid Bowl Feeder
19 58-117 Equipment Tray Lid

20

58-75
58-75-3

Timer Tray Assembly – 581L-1W

Timer Tray Assembly – 581L-2W
21 58-78 Adapter
22 81-16-1 Tie Wrap
23 58-7 Vinyl Tubing (4’ X 5/8 ID)

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