Dema 581LI-1W Installation Manual

DEMA SOLID PRODUCT LAUNDRY MASTER

TM

INSTALLATION INSTRUCTIONS

Models 581LI-1W and 581LI-2W

Included Parts:

A. 581.1 Solid Bowl H. 58.88 Compression Tee
B. 58.1LA Vacuum Breaker I. 58.89 20” LDPE Supply Tubing
C. 58.6 Stainless Steel Supply Tube J. 58.90 Injector Assembly
D. 58.24 Straight Compression Fitting K. 58.92 Screen
E. 58.58 24” LDPE Supply Tubing L. 66.123 Screw & Anchor Kit
F. 58.61 Barrier Sheet M. 100.12L Vinyl Discharge Tube
G. 58.75 Timer Tray Assembly N. Inlet Adapter Assembly

System Overview

The DEMA 581LI-1W and 581LI-2W Laundry Master is designed for long reliable use with simplicity in mind
for both the installer and user. The system is based on the reliable DEMA solid bowl. The valve and
electronics are installed in a heavy plastic tray that is provided with a sealing cover. Programming is done via a
front panel button and visible indicator.

There is a circuit board, which accepts trigger signals from the laundry machine to control the operation of the
valve. All units are equipped with a built in transformer with primary voltages of 120, 208, and 240 at 50/60Hz.

Please read all instructions before proceeding with Laundry Master installation.
Laundry Room Survey

A complete survey of the laundry room or site 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. BEFORE GOING ANY FURTHER, 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 SHOULD BE OBSERVED WHEN
INSTALLING THIS DEVICE. NEVER OPEN THE LAUNDRY MASTER UNLESS POWER
HAS BEEN TURNED OFF. SIGNALS MAY BE PRESENT FROM LAUNDRY MACHINE,
EVEN WITH THE LAUNDRY MASTER POWER TURNED OFF. ONLY USE ELECTRICAL
CODE APPROVED INSULATED WIRING AND ELECTRICAL FIXTURES WITH THIS
INSTALLATION.

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DEMA SOLID PRODUCT LAUNDRY MASTER

TM

INSTALLATION INSTRUCTIONS

Models 581LI-1W and 581LI-2W

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
hole in the side of the Laundry Master enclosure. The power line must also be secured properly between
the laundry machine or power source and Laundry Master such that it does not put stress on the Laundry
Master.

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 knockout in the Laundry Master enclosure. The signal line must be properly secured
between the laundry machine and Laundry Master enclosure.

581LI-1W and 581LI-2W 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 inlet injector assembly, which is on the bowl

outlet in the recess of the timer tray. This will allow the bowl, tray, and barrier sheet 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.

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

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DEMA SOLID PRODUCT LAUNDRY MASTER

TM

INSTALLATION INSTRUCTIONS

Models 581LI-1W and 581LI-2W

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 power and trigger connected, apply the barrier sheet. The barrier sheet is die cut to fit on top of the

timer tray and prevent any stray water from entering the tray. Remove the paper backing from the barrier
sheet and position it on the top of the equipment tray.

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 injector assy. on the outlet fitting of the bowl. Injector assy.
is secured by screwing coupling onto threads at bottom of bowl as tightly as possible, then, turn injector
body so that the screw is facing towards the front.

G. Using Teflon tape, install the compression tee 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 tee on the top of the bowl. Install the other end of

the stainless steel supply tube in the compression tee on the vacuum breaker. Tighten these fittings.

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

fitting. Connect the 24” LDPE supply tubing from this fitting to the inlet fitting of the vacuum breaker.
Tighten these fittings.

J. On the inlet of the injector assy. there is a compression fitting. Connect the 30” LDPE tubing from this

fitting to the open end of the compression tee.

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 swivel adapter, located 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 eyewear 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

Determine the amount of 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 face has a button labeled “ PROG/PRIME” and a round window labeled “CHARGE”.

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DEMA SOLID PRODUCT LAUNDRY MASTER

TM

INSTALLATION INSTRUCTIONS

Models 581LI-1W and 581LI-2W

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

Press and hold the “PROG/PRIME” button to activate the programming function. The “ CHARGE” light will
illuminate. Continue holding the button for about ten seconds until charge light goes out, turns on, and then
begins flashing. Release the button.

The “CHARGE” light will continue to flash. The delay time is now being remembered. The delay time will be
from the time the “ CHARGE” light began flashing until the “PROG/PRIME” button is pressed again. This time can
be set from 0 to through 4 minutes 15 seconds.

When the button is pressed to end the delay time, the dispenser will begin to run. Allow Laundry Master to
dispense for the desired amount of time. Push the “PROG/PRIME” button to set that amount of time and exit the
programming function. The minimum amount of time is 10 seconds and the maximum amount of time is 4
minutes and 15 seconds.

Testing the Program

Pressing and holding the “PROG/PRIME” button activates the test 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 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 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.

Return Policy

No merchandise may be returned for credit without DEMA Engineering Company’s written permission.

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DEMA SOLID PRODUCT LAUNDRY MASTER

TM

INSTALLATION INSTRUCTIONS

Models 581LI-1W and 581LI-2W

Figure 1

DIP SWITCHES

JUMPER (SEE
FIGURE 1 AND 2)

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HOOK UP TERMINALS

Figure 2

Figure 3

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DEMA SOLID PRODUCT LAUNDRY MASTER

TM

INSTALLATION INSTRUCTIONS

Models 581LI-1W and 581LI-2W

SOLID BOWL FEEDER

DEMA MODELS 581LI-1W AND 581LI-2W

58-61

58-75

58-75-3

58-95

66-123

58-19

58-3-1

(FOR 581LI-1W)

44-116-2

41-75

66-119-18

41-9-5-4

44-116-1

41-7-25

41-1-8

41-10-11

58-24

41-15-7

100-12L

58-90

PART NO.

21-8
41-1-8

41-7-25
41-9-5-4
41-10-11
41-15-7
41-36-1
41-59-1
41-60
41-75
44-116-1
44-116-2
58-95
58-3-1

100-38

63-32

(FOR 581LI-2W)

WALL MOUNTING

DESCRIPTION

O-RING SEAL
KICK-OFF SPRING
ENCLOSING TUBE (STAINLESS)

SOLENOID COIL

PLUNGER
DIAPHRAGM

STRAINER SCREEN

VALVE BODY

SCREEN CAP
FLANGE

SCREW #8-18 X 1/2 LG. (2 REQD.)

SCREW #8-18 X 3/8 LG. (1 REQD.)

O-RING

ADAPTER ASSEMBLY

41-59-1

PART NO.

58-19
58-61

58-75

58-90

63-32
66-119-18
66-123

100-12L

100-38

58-75-3

41-36-1

21-8

41-60

DESCRIPTION

SOLID BOWL FEEDER
BARRIER SHEET

TIMER TRAY ASSEMBLY (FOR 581LI-1W)

INJECTOR ASSY.

SWIVEL ADAPTER ASSY. (FOR 581LI-2W)

1/2" HOSE BARB (FOR 581LI-1W)

MOUNTING SCREW & ANCHOR KIT

VINYL TUBING
STRAINER WASHER
TIMER TRAY ASSY. (FOR 581LI-2W)

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