DEMAMasterTM DM-811 Series Installation Manual
R
TM
MADE IN USA
I-807 Page 1 of 6
REV. D-37257 9/20/11
DEMAMasterTM DM-811 Series Installation Manual
System Overview
The DEMAMaster series is designed for long reliable use with simplicity in mind for both the installer and user. The
DEMAMaster dispenses using the reliable DEMA peristaltic pump or DEMA solenoid v alve for dry detergent applications.
The electrical controls are installed in a heavy plastic housing with a sealed cover that uses a Lexan label with visible
function indicators. Pumps are available with three different motor/gear box speeds, 15, 60, and 105 RPM. There are micro
controllers housed in the unit that control the operation of the pump or valve. By use of the various DEMA control boards,
chemical products can be dispensed in a manner that will allow proper usage of the chemical product.
Please read all instructions before proceeding with the DEMAMaster installation.
Preparation for Installation
First step in the installation is to know what type of DEMAMaster is to be installed. The following table will help identify
the unit to be installed. This instruction sheet is only for those model numbers listed.
Table 1
DEMAMaster General Specifications
Model Number Hook Up Power Transformer Pump or Valve
DM-811-L-1T Pump (C2)
DM-811-D-1T Valve
DM-811-PL-1T Pump (C2)
DM-811-PD-1T Valve
DM-811-SC-1T
DM-811-L-0T Pump (C2)
DM-811-D-0T Valve
DM-811-SC-0T
DM-821-L-1T
DM-821-PL-1T
DM-821-SC-1T
DM-821-L-0T
DM-821-PL-0T
DM-821-SC-0T
Dishroom Room Survey and Mounting
A complete survey of the dish machine sight should be completed before the DEMAMaster installation.
1. Locate the power connection points on the dish machine. The data listed in table 1 of this instruction sheet identify the
operating voltage of the DEMAMaster unit to be installed.
2. Select location to mount the DEMAMaster on a wall that will allow access to the chemical product containers and the
chemical product feeds points on the dish machine. The DEMAMaster should be kept away from moisture releasing
machinery and from water being splashed directly on the unit.
3. Mount the DEMAMaster on a wall by use of the supplied hanger. Simply use the 2 screws supplied with the hanger and
mount it to the two holes along the top edge on the backside of the DEMAMaster enclosure. Use appropriate wall
anchors when mounting 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 dish or cleaning 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
DEMAMaster enclosure while power is applied. Signals may be active from dish or cleaning machine, even with
DEMAMaster 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 DEMAMaster. Table 1 specifies the operating voltage of the vari o us m odel s.
Units with transformer and terminal block (See Figure 1):
Locate the power terminal block inside the DEMAMaster enclosure. Connect the red or “live” wire to the
terminal labeled “line”. Connect the “return line” to the appropriate terminal block position based on supply
120/208/240VAC 80-70-1
Pump (C2)
24VAC None
Pump (C2)
120/208/240VAC 80-70-1
Pump (C4)
24VAC None
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DEMAMasterTM DM-811 Series Installation Manual
voltage. The “earth ground” wire must be connected to the terminal block by use of the grounding clip (supplied
in installation kit). The power line should be secured by use of a proper electrical fitting through access hole in
DEMAMaster enclosure. The power line must also be secured properly between the dish machine or power
source and DEMAMaster.
Units without transformer and terminal block (see control board instruction sheet):
These units are listed as 24VAC 50/60Hz operating voltage. They will most likely pick up the same voltage off
of the dish machine. The 24VAC will hook directly up to the control board terminals identified as “24VAC IN”.
The power line should be secured by use of a proper electrical fitting through access hole in DEMAMaster
enclosure. The power line must also be secured properly between the dish machine or power source and
DEMAMaster.
Figure 1
Tubing Connections
Included in the installation kit is a roll of LDPE tubing to connect from the chemical container, via the pump or valve, and to
the dish machine.
Liquid Installation (DEMAMaster with peristaltic pump)
1. Measure the length of the LDPE tubing needed from the bottom of the chemical product container to the pump and cut
the tubing to proper length.
2. Install the tubing to the pickup tube (Grey PVC) through the compression nut so that the LDPE tubing is within ¼” from
other end of pickup tube. Tighten the compression nut to secure. The pickup tube should be placed into the chemical
product container.
3. Route the tubing to the suction side of the pump. An arrow on the faceplate indicates the flow direction. Push the tubing
into the squeeze tube on the inlet side of the pump approximately 1/2”-3/4” (15-20mm). Secure the tubing together by
tightening a cable tie around the squeeze tube.
4. Install the bulkhead fitting with a ¼” compression fitting through the side of the wash tank on the dish machine. The
bulkhead fitting should be installed about 2 inches above the water line.
5. Measure the length of the LDPE tubing needed from the pump to the bulkhead fitting on the side of the dish machine.
6. Push the tubing into the squeeze tube on the outlet side of the pump approximately 1/2”-3/4” (15-20mm). Secure the
tubing together by tightening a cable tie around the squeeze tube.
Dry Installation (DEMAMaster with solenoid valve)
1. Using ¼” O.D. copper tubing run a water line to the DEMAMaster solenoid valve inlet connector (metal compression
elbow fitting).
2. Measure the length of the LDPE tubing that is required to feed water from the solenoid valve to the dry bowl feeder. The
line should be secured to solenoid valve outlet fitting (1/4” plastic compression fitting) and the inlet of the dry bowl
feeder by use of ¼” plastic compression fitting (that should be with the installation kit of the dry bowl feeder).
3. Install the bulkhead fitting through the side of the wash tank on the dish machine. The bulkhead fitting should be
installed about 2 inches above the water line.
4. Use a 5/8” I.D. vinyl tubing to connect the barb fitting at the bottom of dry bowl feeder to the bulkhead fittin g on dish
machine.
Note: Cut off all excess tubing and keep tubing away from hot surfaces and sharp edges to prevent damage or leakage.
At this point the installation is complete; refer to the control board instructions that are included with the DEMAMaster unit.
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General Components
Item
No
1 81-40 1 Electrical Enclosure
2 81-41 1 Electrical Enclosure Lid
3 81-6 1 Hinge and Screw Kit
4 80-70 1 Transformer 40VA
5 81-10-1 1 Terminal Block and Bracket Assembly
6 44-116-2 1 # 8 X 3/8 HI-LO Screw (Mounting Transfor mer)
7 44-116-1 1 # 8 x ½ HI-LO Screw (Mounting Transformer)
8
9 80-99 1 Coin Cell Battery Type CR2032 (Probeless Board Only)
10
11 44-123-4B 1 Valve Assy.
12 44-125 1 Solenoid Cover
13 44-116-1 1 #8 Hi-Lo Screw
14 81-1 1 Wall Mounting Bracket Kit (not shown)
15
16
DEMA P/N Qty Description
81-118-26 1 Detergent Control Board Kit (81.259.1)
81-118-2 1 Rinse Control Board Kit (80.69.5)
81-118-5 1 Probeless Control Board Kit (80.77.4)
25-C2D C2 Detergent Pump Head Kit
25-C2 C2 Rinse Pump Head Kit (3 Roller Block)
25-130-1 C4 Pump Head Kit
81-118-15
1
J-Pump, Detergent Kit. (Squeeze Tube, Gasket, Screws
not included)
80-59-60MK 60 RPM Gear Motor
80-59-15MK 15 RPM Gear Motor
80-59-105MK
1
105 RPM Gear Motor
25-65-CE-11 Detergent Squeeze Tube, EPDM, ½”O.D.x ¼”I.D. x 11”
25-65-RE-11 Rinse Squeeze Tube, EPDM, ½”O.D.x 3/16”I.D. x 11”
25-65-SE-11 Squeeze Tube, EPDM, ½”O.D.x 1/8”I.D. x 11”
81-177-1
1
J-Pump Detergent Squeeze Tube Assy., EPDM, ¼”x ¼”
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DEMAMasterTM DM-811 Series Installation Manual
C2 PUMP ASSEMBLY
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C2 Pump Replacement Parts
Item No. Part No. Description
1 25-91-C2 C2 Pump Head Gasket
2 25-67C2-2 C2 Pump Head
3
25-84C2 C2 Roller Block (2 roller)
25-90C2 C2 Roller Block (3 roller)
4 25-83C2-2 C2 Face Plate
5 25-85-18 #1 0 -3 2 X 1- 1/2” Machine Screw
6 25-85-19 #10-32 X 2” Machine Screw
7
25-C2D C2 Det. Pump Head Kit (kit does not include squeeze tube)
25-C2 C2 Rinse. Pump Head Kit (kit does not include squeeze tube)
25-65CE-11 ½”OD x ¼” ID Squeeze Tube EPDM
8
25-65RE-11 ½”OD x 3/16” ID Squeeze Tube EPDM
25-65CV-11 ½” OD x ¼” ID Squeeze Tube Viton
C4 PUMP ASSEMBLY
1
2
5
3
6
4
5
Item No. DEMA # Description
1 25.114C4 C4 Pump Head Gasket
2 25.129.1 C4 Pump Head Assembly
3 25.86C4 C4 Roller Block Assembly
4 25.87C4 C4 Face Plate
5 25.85.5 #10-32 x 1” Machine Screw
6 25.89CE.14 Squeeze Tube 5/8” OD x 3/8” ID
C4 Pump Replacement Parts
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J-PUMP ASSEMBLY
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J-PUMP ASSEMBLY
Item No. DEMA No. Description
1 81-63-1 Gasket
2 81-128-2 J-Pump Head
3 25-85-2 10-32 x ½” Machine Screw, SS
4 81-172-1 J-Pump Detergent Roller Block (2 rollers)
5 81-177-1 J-Pump Detergent Squeeze Tube Assy., EPDM, ¼”x ¼”
6 81-174-1 J-Pump Face Plate
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 ha ve 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.
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