DEMA 842 LAUNDRY MASTER
INSTALLATION INSTRUCTIONS
TM
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Rev. A28816
Introduction
The DEMA 842 Laundry Master dispensing system has been designed to accurately deliver chemical product to
commercial laundry machines. The 842 uses the proven DEMA peristaltic pumps to deliver the chemical
product to the laundry machine pocket. The pumps and main control are mounted in a durable plastic enclosure
designed to provide easy access to the various components inside.
The various electronic components of the DEMA 842 Laundry Master use a “plug and play” concept to provide
easy setup. The heart of the 842 is the IQ-80 electronic control board that provides 9 wash formula capability.
The IQ-80 is mounted in the plastic enclosure. Along with the IQ-80 is the self contained Signal Transfer Unit
(STU), which can be mounted at the laundry machine to receive trigger signals. Additionally, an optional
handheld Formula Select Module (FSM) or Digital Select Module (DSM) is available to allow the user to
interface with the system remotely. Both the STU and the FSM are connected to the IQ-80 via low voltage
communication cable.
842 Laundry Master Contents
The DEMA 842 Laundry Master includes the following:
• 842 Dispensing System, which contains the pumps, the power supply, and the IQ-80 electronic control
board.
• Hook Up Kit, which contains communication cable, velcro, various strain relieves, and wire ties.
• Signal Transfer Unit (STU), for receiving trigger signals and sending commands back to the IQ-80
• Optionally the 842 Dispensing System will come with either an FSM or DSM.
• Formula Select Module (FSM), for selecting 4 formulas, defeating bleach, and emergency stop remotely.
• Digital Select Module (DSM), for selecting 9 formulas, defeating bleach, and emergency stop remotely.
• Optional Kits:
• Tubing and pickup probe kit can also be provided which comes with 20ft of LDPE tubing per pump, one
pickup probe per pump, and wire ties to secure the tubing. See accessory components near end of this
installation manual.
Before installing the 842 Laundry Master it will be helpful to read through the instructions to become familiar
with the system and its options concerning the installation and setup.
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. The main power to the Laundry Master must
either be 120V or 230V 50/60Hz (+10%/-15% for voltage is acceptable).
2. Select location to mount the stainless steel Laundry Master enclosure on a wall that will allow access to the
chemical product containers and the chemical product feeds points on the laundry machine. The Laundry
Master should be kept away from moisture releasing machinery and from water being splashed on the unit.
3. Mount the Laundry Master on a wall by use of appropriate screws and wall anchors.
4. Select a location to mount the Signal Transfer Unit (STU). The STU should be mounted close to, or on, or
possibly inside the laundry machine. The STU will need to be wired to the various trigger signal sources on
the machine. The trigger wires that are coming out of the STU are 12 inches in length and are used to
receive the trigger signals. The STU can be mounted by use of the self-adhesive velcro that is included in
the hook up kit. Keep in mind that the STU is wired to the IQ-80 via the supplied communication cable.
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5. If using the FSM/DSM, select a location to mount the FSM/DSM where the laundry machine operator can
easily access the buttons on the front of the FSM/DSM module. Again it can be mounted with the selfadhesive velcro that is included in the hook up kit. The FSM/DSM can be connected to the IQ-80 or the
STU by use of the supplied communication cable.
Electrical Installation
All installations must be in accordance with city, county, state or provincial electrical codes and should be
performed by a certified electrician. For questions, please contact local licensed electrical contractor.
Before the electrical installation, it is important to understand the various modes that the 844 Laundry Master
has to offer. The following describe the 3 main modes, however there are sub-options that can be setup within
these 3 modes. See setup section for additional information.
Formula Select
Mode: This is where the unit can be programmed with up to 9 different formulas. Each formula
is driven to operate by individual trigger sources that are generated by the laundry
machine.
Sequence Mode: This is where the unit can be programmed to count a single event from the laundry
machine. A good example of this is using the drain valve on the laundry machine as a
trigger source. The IQ-80 will count the drain valve operations and will operate pumps
based on these counts. Up to 9 formulas can be programmed in this mode as well.
Relay Mode: This is where the IQ-80 is not programmed, but instead the laundry machine is
programmed to provide various formulas. The IQ-80 acts like a relay board and will only
operate pumps for the length of time that the STU receives a trigger signal from the
laundry machine.
One sub-option to become familiar with before wiring the STU is Auto Formula Select. This feature allows the
formula to be selected based on a trigger signal that is received from the laundry machine. It is necessary to
have a separate programmable input from the laundry machine to correctly use the Auto Formula Select. For
more information, see Auto Formula Select in the Setup section of this instruction manual.
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.
2. Connect the power to the Laundry Master. The power requirement will either be 120VAC or 240VAC
50/60 Hz (+10%/-15% of these voltages is acceptable). Locate the 115/230VAC switch on the power
supply and switch it to the appropriate selection. 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 “L1”. Connect the “return line” to
the terminal block position labeled “L2”. The “earth ground” wire must be connected to the terminal block
position labeled “GND”. The power line should be secured by use of proper electrical fitting through access
hole in Laundry Master enclosure. The access hole is sized to accept a ½” conduit fitting. The power
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line must also be secured properly between the laundry machine or power source and the Laundry Master
according to any electrical codes that apply.
3. Connect the flush manifold. See note labeled flush switch below if a flush manifold is not being used. If
using a flush manifold, the solenoid valve that supplies the manifold must be rated for 24V DC. The valve
should be connected to the output terminal position labeled “flush” on the IQ-80 control board. In addition,
a manifold flush switch must be wired to the terminals labeled “Flush + and GND” on the IQ-80 control
board.
Flush Switch: When a flush manifold is not used, step number 3 can be skipped. However, it is essential
that a jumper be connected between the “Flush + and GND” terminals on the IQ-80 control board. The
jumper is installed at the factory. Examine the unit to be installed to assure that it has the jumper installed.
Without the jumper, the Laundry Master pumps will not run. If a jumper needs to be installed, use a short
piece (2-4 inches) of insulated 18GA electrical wire stripped approximately 3/16” at each end.
+
FLUSH
-
TO MOTOR TERMINALS-PUMP 2
TO MOTOR TERMINALS-PUMP 1
(PUMP #1 IS THE PUMP
ON THE LEFT)
+
PUMP 6
-
+
PUMP 5
-
+
PUMP 4
-
+
PUMP 3
-
+
PUMP 2
-
+
PUMP 1
-
RS 485
FLUSH
ALARM
POWER
IN
GND
24V
COM
24V
-
+
+
-
+
L1
L2
GND
20V
COM
20V
POWER
OUTPUT
POWER SUPPLY 84-2-1
IQ-80 CONTROL BOARD 84-3-1
4. Wire the STU to the laundry machine. The hookup configuration will depend on which of the operational
modes the DEMA 842 Laundry System will be used. The following two tables show the wiring
configurations for the input signals to the STU. The first is for normal and relay modes and the second is for
sequence mode. Verify the mode that will be used and wire the STU according to the appropriate table
below using the leads that are coming out of the left side of the STU. Keep in mind that trigger sources
should be at least 90VAC but no higher than 240VAC 50/60Hz.
STU Wiring Configuration (For Formula Select Mode or Relay Mode)
Trigger Input Line (signal) Common Function of Trigger Input
1 Black White/Black Stripe Signal Pump 1
2 Brown White/Brown Stripe Signal Pump 2
3 Red White/Red Stripe Signal Pump 3
4 Orange White/Orange Stripe Signal Pump 4
5 Yellow White/Yellow Stripe Signal Pump 5
6 Green White/Green Stripe Signal Pump 6
7 Blue White/Blue Stripe Signal Flush (optional)
8 Purple White/Purple Stripe Auto Formula Select
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STU Wiring Configuration (For Sequence Mode)
Trigger Input Line (signal) Common Function of Trigger Input
1 Black White/Black Stripe Event Trigger
2 Brown White/Brown Stripe Event Trigger
3 Red White/Red Stripe Reset (optional) example, door switch
4 Orange White/Orange Stripe
5 Yellow White/Yellow Stripe
6 Green White/Green Stripe
7 Blue White/Blue Stripe
8 Purple White/Purple Stripe Auto Formula Select
Not Used
5. Connect the FSM, DSM and STU modules to the IQ-80 by using the RJ45 patch cords that have been
supplied. The STU is required in all installations, but the FSM and DSM are optional. It is possible to
connect the FSM or DSM to the STU RJ45 jack instead of connecting to the IQ-80, providing that the STU
is connected to the IQ-80. See the following note concerning the FSM and DSM.
FSM/DSM Note: The FSM and DSM modules are handheld remote controls that give the operator the
ability to select formulas, defeat a bleach operation, or do an emergency stop. It is not necessary to use
them, but without the FSM or DSM the only way to manually select a formula would be to select it at the
IQ-80 board inside the stainless steel enclosure.
Note: The patch cord is a communication link between the IQ-80 board, the STU and the FSM and can
be subjected to electrical interference when not installed properly. When securing the RJ45
patch cord between the On-Premise Laundry Controller and the Laundry Master, avoid sharp
edges, electrical motors and relays, additionally do not run parallel to electrical power lines and
conduit.
Tubing Connections
ALWAYS WEAR PROTECTIVE CLOTHING AND EYEWEAR WHEN WORKING WITH
CHEMICALS PRODUCTS.
An optional installation kit may be ordered with the 842 Laundry Master. The kits includes a 20ft of LDPE
tubing per pump to connect from the chemical container to the DEMA 842 pump, and from the DEMA 842
pump to the fittings on the machine and 18” pickup tubes designed to accommodate 5 gallon buckets.
For identification purposes, the pumps are identified starting with 1 and up to a possible 6 depending on the
model. In all cases pump number 1 is the pump that is furthest left, count up as you see pumps to the right of
this position. Included with the 842 Laundry Master is a sheet of product labels that can be adhered to the front
of the Laundry Master or any other useful locations to identify the product that each pump is supplying.
Measure the length of tubing needed for the suction side from the chemical container to the inlet of pump and
cut tubing to proper length. The 18” pickup tubes may be used with 5-gallon buckets of chemical products.
Feed the LDPE tubing through the compression nut and sleeve and into the pick-up tube until LDPE tubing is
about a ¼” from the bottom of pickup tube (LDPE tubing should not stick out through the bottom of pickup
tube). Tighten the compression nut to secure LDPE tubing. Route the tubing to the suction side of the pump
and insert into squeeze tube approximately ½”. Secure the tubing together by tightening a cable tie around the
squeeze tube. Use the same procedure on the outlet of the squeeze tube and route the LDPE tubing to the
injection feed points of the laundry machine. Cut off all excess tubing and keep tubing away from hot surfaces
and sharp edges to prevent damage or leakage.
At this point the Laundry Master installation is complete.
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Laundry Master Operation
Once the system has been programmed and setup to the desired configuration the 844 Laundry Master is ready
for operation.
Priming the Pumps
There are two ways to prime a pump. The first is to press the desired pump button on the IQ-80 for no more
than 5 seconds, and the pump will run for the programmed time. The second way is to hold the pump button
down past 5 seconds and the pump will continue to run for as long as the pump button is held down. The FSM
will not prime pumps. All priming is done at the IQ-80 board.
Emergency Stop
At anytime, the pumps and flush can be stopped by pressing the “stop and reset” button on the IQ-80 or by
pressing the “stop” button on the FSM. When pressed it will also reset the system to a starting point of the
formula.
Changing Formulas
Formulas can manually be changed at the FSM/DSM or the IQ-80.
• The FSM has 4 formula capability and has a button for each of the 4 formulas with an LED next to each
button.
• The DSM has 9 formula capability and has a numeric display that will identify the formula.
The IQ-80 has a formula select button that allows the formulas to be selected. As you press the formula select
button it will toggle through the formulas in numeric order wrapping back to 1 after 9 (after 4 when using the
FSM). The “formula display” will indicate the formula that is active.
Bleach Defeat
The bleach defeat function can be activated by pressing the “bleach defeat” button on the FSM or DSM. Keep
in mind that the bleach pump is selected by use of the bleach defeat jumper on the IQ-80. See bleach defeat in
the Setup section of this instruction manual for more information.
Load Counts
While unit is in run mode (normal and relay modes) the “program display” on the IQ-80 displays load counts.
The number displayed represents the formula that is displayed in the “formula display”. Each formula’s load
count can be observed by toggling through the formulas by pressing the “formula select button”. Each load
count can be reset to zero by pressing the “up” and “down” button simultaneously.
The maximum amount of load counts that the IQ-80 will store is 999.
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20
21
12
825
11
3
24
2
11
9
* SEE REPLACEMENT PART
TABLE ON PAGE 23
1
15
5
14
16
17
22
4
6
1
23
18
7
10
19
BOTTOM OF ENCLOSURE
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Rev. A28816
R
27
Replacement Parts
Item No. DEMA Part
Number
1 81.1 1 Electrical Enclosure
2 84.3.1 1 IQ-80 Control Board
3 83.11.2 1 Power Switch (Toggle Switch)
4 83.14.1 1 On/Off Switch Plate
5 80.59.60
80.59.105
6 25.124.5 2 Universal Bushing
7 84.2.2 1 80VA Power Supply
8 81.5 1 Electrical Enclosure Lid
9 81.6 1 Hinge and Screw Kit
10 81.19.1 4 #8 x 1/2 Hi-Lo Screw (For Mounting Transformer)
11 81.16.2 4 Tie Wraps
12 L711.1 1 Pump Blank Label
13 84.48.1 1 Fuse 2A, 250V, 5mm x 20mm Kit (5 Fuses/Kit)
14 84.13.1 1 Toggle Switch Boot
15 84.14.1 1 Toggle Switch Boot Mounting Nut
16 41.63.12 4 #8-32 X 2 ¼” S.S. Screw
17 44.29.1 4 #8 Lockwasher S.S.
18 84.22.2 4 #8 Flat Washer S.S.
19 84.44.1 1 Power Supply Bracket
20 L604 1 Caution Label – Electrical
21 L605 1 Caution Label - Chemical
22 81.47.1 1 ½” Hole Plug
23 81.47.4 1 7/8” Hole Plug
24 81.20.2 4 # 4 HI-LO Screw (mounting circuit boards)
25 81.29.2 2 Captive Screw
26 84.8.4F 1 (Optional) FSM Assembly (4 Formula)
27 84.9.1 1 STU Assembly
28 84.8.9F 1 (Optional) DSM Assembly (9 Formula)
QTY.
Required
1
1
Description
60 RPM Gear/Motor 24VDC
105 RPM Gear/Motor 24VDC
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C4 Pump Head Kit Item Number 10 (Does not include squeeze tube, item number 19)
C2 Pump Head Kit Item Number 9 (Does not include squeeze tube, item number 17 or 18)
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Accessory Replacement Parts
DEMA Part No Description
25-68-20 20 ft of ¼” O.D. LDPE Tubing
25-68-40 40 ft of ¼” O.D. LDPE Tubing
25-68-60 60 ft of ¼” O.D. LDPE Tubing
25-68-80 80 ft of ¼” O.D. LDPE Tubing
25-68-100 100 ft of ¼” O.D. LDPE Tubing
25-68-120 120 ft of ¼” O.D. LDPE Tubing
25-115 20 ft of 3/8” O.D. LDPE Tubing
25-115-40 40 ft of 3/8” O.D. LDPE Tubing
25-115-60 60 ft of 3/8” O.D. LDPE Tubing
25-115-80 80 ft of 3/8” O.D. LDPE Tubing
25-115-100 100 ft of 3/8” O.D. LDPE Tubing
25-115-120 120 ft of 3/8” O.D. LDPE Tubing
80-66 10” PVC Pick-up Tube Assembly
80-66-2 18” PVC Pick-up Tube Assembly
81-16-1 8” Tie Wrap (for securing wiring or tubing)
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.
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