DEMA 151 User manual

DEMA 151
FAUCET PROPORTIONER
INSTALLATION INSTRUCTIONS
I-101 Pg. 1 of 5
Rev. C-41011 9/11/15
I. PARTS
A. Faucet Proportioner
B. ¼” ID x 8 ft. long vinyl supply tubing, foot valve and ceramic weight
C. Metering Tips (2 ea.)
II. INSTALLATION
This product is designed only to be used as described in this instruction sheet. Adhere to all warnings and
cautions identified in this document.
WARNING: Installations must conform to all local and national plumbing codes and use
approved backflow prevention and pressure relief devices where required.
ALWAYS DISCONNECT DISPENSER FROM WATER SOURCE WHEN DISPENSER
IS NOT IN USE.
Always read SDS for all chemicals used and follow personal protective guidelines.
Screw proportioner directly onto garden hose type faucets. Remove inlet adapters for mounting onto standard
external aerator threads. For other faucets, see parts break-down for adapter part numbers. Select a metering tip (See
section 4), and screw it into the inlet barb (Figure 1).
Place the chemical container in a convenient location not more than 6 feet below the proportioner (greater lifts will
reduce injection capacities). Insert the vinyl supply tubing with the foot end into the chemical container. Cut the
vinyl tube to any convenient length that will allow it to extend from the bottom of the chemical container to the
proportioner inlet barb. (See Figure 1)
For filling buckets or mop rigs: a short length of open ended garden hose may be attached to the proportioner outlet.
Replace screen retainer part 100-8 with hose adapter part 100-10. Use one screen part 100-7 to insure priming.

DEMA 151
FAUCET PROPORTIONER
INSTALLATION INSTRUCTIONS
I-101 Pg. 2 of 5
Rev. C-41011 9/11/15
III. OPERATION
WARNING: USE CARE WHEN HANDLING HAZARDOUS CHEMICALS
Turn on water and press the blue button to draw in chemical. When water is turned off, proportioner will reset to
dispense clear water.
FIGURE 1
METERING TIP
PUSH BUTTON
AIR VENT
OUTLET SCREEN RETAINER
SUPPLY TUBING
FOOT VALVE
CERAMIC WEIGHT
CHEMICAL CONTAINER
INLET ADAPTER
DETERGENT INLET BARB

DEMA 151
FAUCET PROPORTIONER
INSTALLATION INSTRUCTIONS
I-101 Pg. 3 of 5
Rev. C-41011 9/11/15
IV. CHEMICAL INJECTION ADJUSTMENT
Chemical feed rates are controlled by metering tips screwed into the proportioner barb. Select a tip using the Table
as a guide.
Note: 1cp(centipoise) is equivalent to the viscosity of water, 75 cp is approximately equal to the viscosity of 10
weight motor oil, and 200 cp is approximately equal to the viscosity of most dishwashing detergents.
Metering Tip
Color
Injection Rates For Viscosities Shown
1 cp 2cp 75cp 200 cp
Oz./Gal. Ratio Oz./Gal. Ratio Oz./Gal. Ratio Oz./Gal. Ratio
Tan 0.25 512-1 0.20 640-1 0.17 756-1 0.15 853-1
Orange 0.33 384-1 0.30 427-1 0.25 512-1 0.20 640-1
Turquoise 0.50 256-1 0.40 320-1 0.33 384-1 0.25 512-1
Pink 0.63 205-1 0.50 256-1 0.45 284-1 0.33 384-1
Clear 0.75 171-1 0.70 183-1 0.60 213-1 0.45 284-1
Brown 1.00 128-1 0.85 151-1 0.70 183-1 0.50 256-1
Red 1.25 102-1 1.00 128-1 0.80 160-1 0.60 213-1
White 1.50 85-1 1.25 102-1 1.00 128-1 0.70 183-1
Green 1.75 73-1 1.50 85-1 1.15 111-1 0.75 171-1
Blue 2.00 64-1 1.75 73-1 1.35 95-1 0.85 151-1
Yellow 3.20 40-1 2.50 51-1 1.85 69-1 0.95 135-1
Black 4.00 32-1 3.20 40-1 2.20 58-1 1.00 128-1
Purple 6-40 20-1 5.00 25-1 2.50 51-1 1.05 122-1
Gray 10.00 12-1 5.50 23-1 2.75 47-1 1.07 120-1
No Tip 12.00 10-1 6.40 20-1 3.20 40-1 1.10 116-1

DEMA 151
FAUCET PROPORTIONER
INSTALLATION INSTRUCTIONS
I-101 Pg. 4 of 5
Rev. C-41011 9/11/15
V. SERVICING
CAUTION: Turn off water supply before servicing.
A. Failure to inject chemical:
1. Low water pressure. At least 10 psi is required.
2. Dirt or chemical on outlet screens. Clean.
3. Blue button does not seal when pushed. Remove and inspect for dirt or damage.
4. Detergent passage blocked. Remove tip to clean. Remove proportioner and soak in hot water to clean
internal passages.
5. Foot valve clogged. Soak in hot water.
6. Lime deposits in water passages. Remove proportioner and soak in a deliming solution.
7. Outlet hose (if used) obstructed or too long.
B. Injects continuously:
1. Button fails to reset because of damage to button, retainer or spring.
2. Vacuum breaking air vents in button retainer are clogged with grease or dirt. Clean.
3. Chemical container above level of faucet. Place container on floor.
CAUTION: When servicing unit, be sure that replacement parts have been installed according to drawing.
RETURNS: NO MERCAHNDISE MAY BE RETURNED FOR CREDIT WITH DEMA’S WRITTEN
PERMISSION. RETURN MERCHANDISE AUTHORIZATION 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 like 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 with 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.

DEMA 151
FAUCET PROPORTIONER
INSTALLATION INSTRUCTIONS
I-101 Pg. 5 of 5
Rev. C-41011 9/11/15
NO. PART NO. DESCRIPTION
1 * 100-6 Inlet Washer (2 Reqd.)
2 100-15 Metering Tip (Specify Color)
3 * 100-7 Outlet Screen (3-Reqd.)
4 * 100-8 Outlet Screen Retainer
5 100-10 Outlet Hose Adapter
6 * 100-29 Button Spring
7 * 100-26 Push Button
8 * 100-28 Button Retainer
9 150-6 Adapter Washer
10 150-10 Hose Thread Adapter w/Washer
11 100-12 ¼” ID x 8’ Lg. Supply Tubing
12 61-107-2 Ceramic Weight
NO. PART NO. DESCRIPTION
13 100-16E Foot Valve
14 100-51 Repair Kit
NO. PART NO. DESCRIPTION
15 150-23 Outside Chicago Thread Adapter
16 150-21 Inside Aerator Thread Adapter
17 150-32 Inside Kohler Thread Adapter
18 150-9-2 Irregular Faucet Adapter
19 100-14M Coupling For ¼” ID x 8’ Lg. Tubing
20 34-22 Backflow Preventer
INTERNAL
AERATOR
THREAD
* 8
11
*ITEMS IN REPAIR KIT
NO. 100-51
13
14
5
* 4
EXTERNAL
AERATOR
THREAD
15
CHICAGO
AERATOR
FAUCET
10
* 7
12
* 6
2
* 3
* 1
16 17
GARDEN
THREAD
HOSE
9
20
19
18
THREADLESS
OR ODD
SHAPED
FAUCET