Page 1
DEMA BLEND SAFE
MODEL: 661GAPB
INSTALLATION INSTRUCTIONS
The 661 Series Lockable Stainless Steel Dispensers offer safety and security when it’s necessary for gallon bottles to be self-contained
inside the dispenser. Units are lightweight and have a mounting flange outside the dispenser for easy installation.
1. PARTS CHECKLIST:
ITEM DESCRIPTION QTY.
A.
B.
C.
D.
E.
F.
G.
H.
I.
2. INSTALLATION: (Refer to Figure 1)
Note: All installatio ns must confo rm to lo cal plumbing code s and use approved backflo w pre venters. A pr es su re i nd ic ati ng
tee is to be installed with e xisting faucets acco rding to local pl umbing codes in the state of Wisconsin and any other states
that require the use of a pressure indicating tee.
Blend Safe Assembly 1
¼” ID X 21” LG. Vinyl Supply Tubing & Foo t Valve Assembly 1
Ceramic Weight 1
Drip Tray 1
#10 Plastic Anchor 3
#10 Screw 3
Label Card 2
Metering Tip Kit 1
Cabinet Lock Key Set 1
WARNING: Water supply should not exceed 125 psi and water temperature must not exceed 150°F.
A. MOUNTING AND WATER SUPPLY:
Locate mounting holes on a permanent surface for the Blend Safe. Drill all of the holes into the drywall using a 1/4” diameter bit for
use with the included #10 screws and anchors. (If mounting the Blend Safe to wood and you do not plan to use the included an ch ors,
drill 1/8” diameter holes.) Insert the anchors into drilled holes and hammer them into the wall until they are flush with f ace of wall.
Assemble all of the #10 screws with a Phillips screwdriver into the anchors so the screw heads are sticking out of the wall
approximately 1/8”. Mount the Blend Safe by inserting the screw heads through the keyhole slots in the top and tighten the screws.
Now insert and tighten the screws in the bottom.
The water inlet is equipped with a female garden hose fitti ng (with strainer washer) for attaching a wat er suppl y h os e. Th e wa ter in le t
may be removed to per mit dir ect connec tion to a 3/8" NPT pipe. The unit is designed so water can be supplied to either side by
interchanging the pipe plug with the pipe and female hose fitting assembly. Note: Apply pipe dope, hand-tight en , t he n t urn 1- ½
times with a wrench. Do not over tighten.
WARNING: Do not use Teflon® tape to seal internal plastic threads as the extra thickness of the tape may cause the plastic
to crack. Use a non-welding liquid sealant instead.
B. PRESSURE INDICATING TEE INSTALL ATION:
Screw female quick disconnect to faucet and attach pressure indicating tee to female quick disconnect. Attach female end of
reinforced hose to male threads of tee, then attach t he male end t o the f em ale garden hose f itti ng at the wat er inlet of the Blen d Safe
(See Figure 3).
C. CHE MICAL INJECTION ADJUSTMENT:
Warning: Use care when handling hazardous chemicals.
Chemical f eed rates are controlled by metering tips screwed into the proportioner barb. Select a tip using Table 1 or 2 as a guide.
1 cps (centipoise) is equal to the viscosity of water
75 cps is approximately equal to the viscosity of 10 weight motor oil
200 cps is approximately equal to the viscosity of most dishwashing detergents
I-801 Pg. 1 of 6
Rev. C-36327 11/19/ 10
Page 2
Metering Tip Color
Tan
Orange
Turquoise
Pink
Light Blue*
Brown
Red
White
Green
Blue
Yellow
Black
Purple
Gray
No Tip
DEMA BLEND SAFE
MODEL: 661GAPB
INSTALLATION INSTRUCTIONS
TABLE 1 - 1 GPM FLOW RATE PROPORTIONER, 1/4” I.D. TUBING
Injection Rates For Viscosities Shown
1 cps 75 cps 200 cps
Oz/Gal Ratio Oz/Gal Ratio Oz/Gal Ratio
1.03 125-1 0.76 168-1 0.38 333-1
1.24 103-1 0.98 130-1 0.53 241-1
1.43 89-1 1.07 119-1 0.61 211-1
2.47 52-1 1.58 81-1 0.92 139-1
3.05 42-1 2.1 61-1 1.06 121-1
3.48 37-1 2.31 55-1 1.15 111-1
4.38 29-1 2.83 45-1 1.23 104-1
5.33 24-1 3.1 42-1 1.37 93-1
6.38 20-1 3.63 35-1 1.40 91-1
6.77 19-1 3.78 34-1 1.45 88-1
9.90 13-1 5.1 25-1 1.48 86-1
15.00 9-1 6.54 20-1 1.53 84-1
24.94 5-1 7.28 18-1 1.57 82-1
35.94 4-1 8.5 15-1 1.64 78-1
73.21 2-1 9.35 14-1 1.87 69-1
TABLE 2 - 4 GPM FLOW RATE PROPORTIONER, 1/4” I.D. TUBING
Injection Rates For Viscosities Shown
Metering Tip Color
Tan
Orange
Turquoise
Pink
Light Blue*
Brown
Red
White
Green
Blue
Yellow
Black
Purple
Gray
No Tip
1 cps 75 cps 200 cps
Oz/Gal Ratio Oz/Gal Ratio Oz/Gal Ratio
0.33 387-1 0.26 500-1 0.12 1090-1
0.42 307-1 0.32 430-1 0.17 735-1
0.51 251-1 0.34 382-1 0.19 676-1
0.78 165-1 0.56 230-1 0.30 422-1
0.87 147-1 0.67 192-1 0.33 391-1
0.99 129-1 0.74 174-1 0.37 345-1
1.37 93-1 0.91 141-1 0.44 289-1
1.52 84-1 1.04 123-1 0.48 264-1
1.72 74-1 1.22 105-1 0.52 244-1
2.13 60-1 1.27 101-1 0.54 239-1
3.05 42-1 1.71 75-1 0.56 229-1
4.50 28-1 1.96 65-1 0.57 224-1
7.75 17-1 2.40 53-1 0.59 217-1
9.86 13-1 2.54 50-1 0.63 204-1
19.63 7-1 3.16 40-1 0.67 190-1
NOTE: *Metering tip color was formerly clear. All induction rates are based on a water pressure of 40 psi.
Leaner dilutions can be achieved by or dering DEMA ultra le an tip kit 100-15KU o r capil lary tip 44-61P.
D. CHE MICAL SUPPLY:
Install the chemical supply tubing by pushing the tubing over the barb of the proportioner. The proportioner is accessible th rou gh t he
case door (Refer to Figure 1). Push the tubing through the slots in the cover. Place the chemical container inside the case and insert
the foot valve and ceramic weight end of the chemical supply tubing into the chemical container. Peel off gumme d labe ls a re pro vi ded
for labeling chemicals.
E. DRIP TRAY:
The Drip Tray is installed by simply sliding the tray flange under the tabs on the bottom of the case. Lower the tray allowing tray
dimples to fall into the receptor holes.
3. OPERATION:
The Blend Safe is now ready for use. Depressing a push button opens the valve allowing water to flow through the chemical proportioner
that mixes a chemical water solution at the desired ratio. The buttons are spring loaded to prevent accidental overflow if unattended, but
I-801 Pg. 2 of 6
Rev. C-36327 11/19/ 10
Page 3
DEMA BLEND SAFE
FIGURE 2
MODEL: 661GAPB
INSTALLATION INSTRUCTIONS
may be converted to locking buttons b y cutting off the tab at the notch (See Figure 2 ). Pushing the b utton and turning it a 1/4 tur n
clockwise at the end of its travel allows the valve to lock on. This makes it unnecessary for the attendant to hold the button in while filling
large containers. Turning the button in a counterclockwise direction will release it, allowing the valve to shut off.
4. SERVICING:
Caution: Turn off water supply before servicing.
A. Proportioner fails to draw chemical:
1. Pinch outlet tube to create back pressure, which will
cause unit to p rime. The foot valve will keep the inlet
tube primed thereafter.
2. Insufficient water supply pressure. 20 PSI is the
minimum allowable.
B. Proportioner stops drawing chemical:
1. Inspect foot valve for dried chemical or dirt. Soak in hot
water to clean.
2. Proportioner metering tip clogged with dried chemical.
Remove tip and try injecting in hot water. If there is no
suction, remove pr oportioner and soak in hot water to
clear interior passages.
3. Inspect proportioner to ensure that there are no
mineral deposit build-ups on the nozzle. If so, soak
proportioner body in de-liming solution. (Remove all
parts attached to proportioner before soaking in deliming solution.) Note: Use care when handling
hazardous chemicals.
C. Valve Malfuncti on:
Check that the button moves freely in & out and that a "click"
can be heard when the button is pushed and released,
indicating that the magnet is activating the plunger properly.
Remove cover. To inspect internal parts, unscrew magnet
housing and carefully pull off the enclosing tube so as not to
drop the plunger, kickoff spring, and spacer. Check for dirt
or damage impeding plunger and kickoff spring movement.
Inspect the diaphragm, making sure the two small pinholes (bleed holes) in the diaphragm convolution are clear in order to allow the
valve to close.
Button Actuator
Action Gap
Proportioner
Metering Tip
Chemical
Container
Chemical Supply Tube
Ceramic Weight
Foot Valve
FIGURE 1
Push Button
Utility Knife
Outlet Tubing
Cabinet Lock
Drip Tray
Inlet Hose
Adapter
Strainer
Washer
Mounting Holes
RETURNS: NO MERC HAN DISE MAY BE RETUR NED FOR CREDIT WITHOUT DEM A’S WR ITTEN
WARRANTY: DEMA products are warranted against defective material and work man shi p un der no rmal use an d se rvi ce
I-801 Pg. 3 of 6
Rev. C-36327 11/19/ 10
Caution: When servic ing unit, be sure that repl acement parts have been installed according to the dr awing.
PERMISSI ON. RET URN MERCHANDISE AUTHORI ZATI ON NUMBER REQ UIRED IN
ADVANCE OF RETURN.
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, i m prope r
voltage supply, physical abuse, or misapplication. Rubber and synthetic rubber parts suc h as “o”- rin gs,
diaphragms, squeeze tubing and gaskets are considered expendable and are not covered under w arra nty .
This warra nty is ext ended only to t he original buyer of DEMA products. If p roducts are alt ered or
repaired without prior approval of DEMA, this warranty will be void.
Defective units or part s should b e returned to the fact ory with transp ortat ion prepaid. If ins pection
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 un its f or repai r o r
replacement, must be granted in advance of return.
Page 4
DEMA BLEND SAFE
MODEL: 661GAPB
INSTALLATION INSTRUCTIONS
PRESSURE INDICATING TEE INSTALLATION
BLEND C ENTER
WATER INLET HOSE
OUTLET TU BI NG
PRESSURE
INDICATING
TEE
CHEMICAL
INLET TUBI NG
WATER INLET HOSE
DETAIL OF PRESSURE
INDICATING TEE
FIGURE 3
I-801 Pg. 4 of 6
Rev. C-36327 11/19/ 10
Page 5
DEMA BLEND SAFE
(SPECIFY
(SPECIFY
Pipe Nipple (3/8" NPT X 2" Lg.)
See page 8 for
See page 8 for
MODEL: 661GAPB
INSTALLATION INSTRUCTIONS
13
1
COLOR)
12
16
15
17
breakdown
18
breakdown
19
22
(6" Long Tubing)
21
20
14
23
25
24
27
2
COLOR)
3
28
4
29
5
7
8
6
9
10
11
26
NO.
PART NO.
1
2
3
4
5
6
7
8
9
10 41-15-10
11
12
13
14
15
16
17
18
66-139
66-140
63-35
63-36
41-7-25
63-87
63-37
41-1-8
63- 38
63- 39
100-38
93- 19
66- 27
68- 8
66-153
16- 30
61-99GAP-2
Magnet Housing (Specify Color)
Push Button (Specify Color)
Magnet
Spring
Enclosing Tube
Valve Repair Kit
Spacer
Kick-off spring
Plunger
Diaphragm
Valve Body
Strainer Washer
Swivel Adapter 1/2 NPT
Bushing
Pipe Plug & O-Ring Assy.
Action Gap Assembly
1 GPM (1/4" Barb) Proportioner (Green)
DESCRIPTION
PART NO.NO.
19
20
21
22
23
24
25
26
27
28 66-23- 1
NO.
29
63-78
63-79
100- 15K
16-3- 6
66- 28
61-107- 2
100- 11P
66- 21
61- 71
PART NO.
68-6- QD2
DESCRIPTI ON
O-Ring
Inlet Barb (1/4" Barb)
Metering Tip Kit-14 Sizes
1/2" I.D. X 6" Lg. Vinyl Outlet Tube (1 GPM Only)
1/4" ID X 21" Lg. Vinyl Supply Tubing
Ceramic Weight
Foot Valve
Cabinet Lock
Snap Bushing
Drip
ACCESSORIES
DESCRIPTI ON
Pressure Indicating Tee
I-801 Pg. 5 of 6
Rev. C-36327 11/19/ 10
Page 6
DEMA BLEND SAFE
MODEL: 661GAPB
INSTALLATION INSTRUCTIONS
5
1
1
2
3
NO. PART NO. DESCRIPTION
1 150-6 Rubber Washer
2 61-36 Flow Disk
3 16-3-6 1/2” I.D. x 6” Lg. Vinyl Outlet Tube (1 GPM Only)
4 61-21 1/2” I.D. x 6’ Lg. Vinyl Outlet Tube (4 GPM Only)
5 63-89-1 Rubber Washer (1/32” Thick)
6 16-30 Action Gap Assembly
4
6
I-801 Pg. 6 of 6
Rev. C-36327 11/19/ 10
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