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DEMA 652AG DUO-FEED
INSTALLATION INSTRUCTIONS
I. PARTS:
A . Dispenser assembly
B. 1 pc. 9/16 in. I.D. X 6 ft. vinyl outlet tubing.
C. 2 pc. 3/8 in. O.D. X 8 ft. vinyl supply tubing, foot valve & ceramic weight.
D. 4 pc. #10 pan head 3/4 in. long mounting screw.
E. 4 pc. 7/8 in. long plastic mounting anchor.
F. 1 pc. Metering tip kit.
II. INSTALLATION: (See Figure 1 for setup diagram)
A. Mounting and Water Supply:
Locate mounting holes on a permanent surface above sink. Drill holes about 1” deep and insert mounting anchors.
Mount the unit using screws inserted through the keyholes in the case. Secure unit by i nse rtin g sc re w s in to th e l ow e r
2 holes. The unit needs to be mounted high enough that the sink does not interfere with the outlet tubes, putting a
strain on the proportioners. If this is not possible, tie the outlet tubes together approximately 4” below where the
tubes attach to the proportioners.
The water inlet is equipped with a female garden hose adapter to permit connection to the righ t han d side o f th e u ni t.
The water supply can be attached to the left side of the unit by interchanging the plug in the left-hand side with the
garden hose adapter. Note: The water supply pressure should not exceed 150 psi.
B. Chemical Supply:
Place the chemical containers in a convenient location not more than 6 ft. below the dispensing unit. Note: greater
lifts will redu ce in jection capacities. Insert the ends with the foot valves of the 8 ft long, 3/8 in. O.D. vinyl tubes
into the chemical containers. Cut the vinyl tubes to any convenient length that will allow the tubes to extend from
the bottom of the chemical container to the proportioner inlet barb. Slide the ceramic weights over the 3/8 in. O.D.
tubing and down to the foot valves. Repeat this procedure for both containers.
C. Outlet:
For each of the proportioner outlets: Cut a piece of the 9/16 in. I.D. outlet tubing into the desired le ngth s an d attac h
to the proportioner outlet. Note: To insure primin g, do not cut tubing to less than 18 in.
Caution: To prevent contin uous siph onin g, the outl et of the disch arge tubin g should n ot be below the level
of chemical in th e container.
Outlet tubes may be tie-wrapped to each other or anchored to the wall or faucet to prevent damage to pro porti on ers.
(Tie-wraps not included.)
D. Injection Adjustment:
WARNING: USE CARE WHEN HANDLING HAZARDOUS CHEMICALS.
Chemical feed rates are controlled by metering tips screwed into the proportioner barb. Use Table 1 as a guide for
tip selection.
Note: 1 cps (centipoise) is equal to the viscosity of water, 75 cps is approximately equal to th e vi scos it y of 10
weight motor oil, and 200 cps is approximately equal to the viscosity of many dishwashin g detergen ts.
I-557 Pg. 1 of 4
Rev. B-0600
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III. OPERATION:
The model 652AG is act ivat ed by turning one of the t wo on-off ball valves fully count er-clockwise. When the desired
amount of chemical water solution has been obt ained turn the ball valve fully clockwise. Note: Do not use ba ll valves t o
throttle chemical water flow rate; this will result in inconsistent induction rates.
IV. SERVICING:
CAUTION: TURN OFF WATER SUPPLY BEFORE SERVICING.
A. Proportioner fails to draw chemic al:
1. Proportioner outlet tubing cut too short for priming. Pinch outlet tube to create back pressure which will
2. Insufficient water supply pressure. 20 psi is the minimum allowable pressure.
B. Proportioner stops drawing chemical:
1. Inspect foot valve for dried chemical or dirt. Soak in hot water to clean.
2. Proportioner inlet clogged with dried chemical. Remove metering top and try injecting in h ot w ate r. If the re
Metering Tip
Color
Tan 0.30 427-1 0.20 640-1 0.15 853-1
Orange 0.40 320-1 0.30 427-1 0.25 512-1
Turquoise 0.50 256-1 0.40 320-1 0.30 427-1
Pink 0.75 170-1 0.50 256-1 0.40 320-1
Clear 1.00 128-1 0.70 183-1 0.45 284-1
Brown 1.12 114-1 0.80 160-1 0.50 256-1
Red 1.50 85-1 0.90 142-1 0.60 213-1
White 1.75 73-1 1.10 116-1 0.70 183-1
Green 2.00 64-1 1.25 102-1 0.80 160-1
Blue 2.50 51-1 1.50 85-1 0.85 151-1
Yellow 3.75 34-1 1.85 69-1 0.90 142-1
Black 5.00 26-1 2.00 64-1 0.95 135-1
Purple 8.50 15-1 2.50 51-1 0.98 131-1
Gray 11.50 11-1 2.70 47-1 1.00 128-1
None 16.25 8-1 3.00 43-1 1.20 107-1
DEMA 652AG DUO-FEED
INSTALLATION INSTRUCTIONS
cause unit to prime. The foot valve will keep the inlet tube primed thereafter.
is no suction, remove proportioner and soak in hot water to clear interior passages.
TABLE 1
(163BAG - 4 GP M FLOW RATE PROPORTION ER, 1/4" BARB A ND TUBING)
Injection Rates For Viscosities Shown
1 cps 75 cps 200 cps
Oz./Gal. Ratio Oz./Gal. Ratio Oz./Gal. Ratio
Note: Special tips and proportioners are available to achieve higher and lower dilutions.
All dilu tions based on 4 GPM flow at 40 psi. water pressure.
I-557 Pg. 2 of 4
Rev. B-0600
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DEMA 652AG DUO-FEED
INSTALLATION INSTRUCTIONS
RETURNS: NO MERCHANDISE MAY BE RETURNED FOR CREDIT WITHOUT 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 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, s queeze t ubing a nd ga skets are considered ex p endable and ar e 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.
OUT LET TU B E
CHEMICAL SUPPLY TUBE
BALL V ALVE (2)
SWIVEL ADAPTER OR
MALE THREA DED FITTING
CHEM ICAL SU PPLY TUB E
OUTL ET TUBE
CHEMICAL
CONTAINER
FIGURE 1
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Rev. B-0600
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DEMA 652AG DUO-FEED
65-7
65-8
61-22BAG-4
65-6
63-91
63-73
63-76
65-7
65-8
63-78
65-9
100-38
63-79
100-15
65-10
65-11
PART NO.
61-22-3BAG
61-107-2
63-73
63-76
63-78
63-79
63-83
63-91
65-6
63-83
DESCRIPTION
4 GPM (1/4" BARB) PROPORTIONER
CERAMIC WEIGHT (1/4" TUBE)
NOZZLE (4 GPM)
SCREEN
O-RING
INLET BARB (1/4" BARB)
VINYL TUBE (9/16 I.D. X 6' LG.)
STRAINER WASHER
PLUG
PART NO.
65-7
*65-8 ADAPTER
65-9
*65-10
*65-11
100-11P
100-12
*100-38
1/4" BALL VALVE
GARDEN HOSE ADAPTER STEM
HOSE COUPLING
SWIVEL ADAPTER KIT
FOOT VALVE
VINYL TUBE (1/4" I.D. X 8' LG.)
STRAINER WASHER
100-12
61-107-2
100-11P
DESCRIPTION
ACCESSORIES
*OMITTED ON 652AG-MHF; USES 65-8 INSTEAD.
100-15K
METERING TIP KIT-14 SIZES (1/4" BARB)
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Rev. B-0600
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