Page 1
MODELS 662-GAP & 662-GAP-1OH (ONE HAND FILL)
1) PARTS CHECKLIST:
A. Blend Safe Assembly B. ¼” ID x 28” Lg. Vinyl Supply Tubing w/ Foot Valve
C. Ceramic Weight D. Outlet Tubing Hanger
E. Screw and Anchor Kit F. Label Card G. Drip Tray (1 GPM) H. M ounting Templ ate (I-783-2)
I. Metering Tip Kit J. Box Hinges K. Key Set L. Box Clips
DEMA BLEND SAFES
INSTALLATION INSTRUCTIONS
2) INSTALLATION
: Note: All installations must conform to local plumbing codes and use approved backflow preventers. A
pressure indicating tee is to be installed with existing faucets according to local plumbing codes in the state of Wis co nsi n an d an y
other states that require the use of a pressure indicating tee. WARNING: Water supply should not exceed 125 psi and water
temperature must not exceed 150°F.
A. MOUNTING AND WATER SUPPLY:
Use mounting template enclosed to locate the mounting screw positions. Drill all of the holes into the drywall using a 1/4” di am ete r
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
anchors, drill 1/8” diameter holes.) Insert the anchors into drilled holes and hammer them into the wall until they are flush with face
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 1/2”. 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 fitting (with strainer wash er)
for attaching a water supply hose. The water inlet may be removed to permit direct connection 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 fi tt ing ass em bly . Note:
Apply pipe dope, hand-tighten, then turn 1-½ tim es w ith a w rench. Do not over tighten. WARNING: Do no t use Tef lon ®
tape to sea l internal plastic th rea ds a s t he ext ra th ickn ess of th e tape may ca us e the plastic to cra ck. U se a nonwelding
liquid sealant instead.
B. PRESSURE INDI CATING T EE INST ALLAT ION:
Screw female quick disconnect to faucet and attach pressure indicating tee to
female quick disconnect. Attach fem ale end of reinf orced ho se to m ale t hreads of tee, then attach the male en d t o t he female garden
hose fitting at the water inlet of the Blend Safe (See Figure 3).
C. CHE MICAL INJECTION ADJUSTMENT
: Warning: Use care when handling hazardous chemicals.
Chemical feed rates are controlled by m etering 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 v iscosity of most dis hwashing detergents
TABLE 1- 1 GPM FLOW RATE PROPORTIONER, 1/4” I.D. TUBING
Injection Rates For Viscosities Shown
Metering Tip Color
1 cps 75 cps 200 cps
Oz/Gal Ratio Oz/Gal Ratio Oz/Gal Ratio
Tan 1.03 125-1 0.76 168-1 0.38 333-1
Orange 1.24 103-1 0.98 130-1 0.53 241-1
Turquoise 1.43 89-1 1.07 119-1 0.61 211-1
Pink 2.47 52-1 1.58 81-1 0.92 139-1
Li ght Blue* 3.05 42-1 2.1 61-1 1.06 121-1
Brown 3.48 37-1 2.31 55-1 1.15 111-1
Red 4.38 29- 1 2.83 45-1 1.23 104- 1
White 5.33 24-1 3.1 42-1 1.37 93-1
Green 6.38 20-1 3.63 35-1 1.4 91-1
Blue 6.77 19- 1 3.78 34-1 1.45 88-1
Yellow 9.90 13-1 5.1 25-1 1.48 86-1
Black 15.00 9-1 6.54 20-1 1.53 84-1
Purple 24.94 5-1 7.28 18-1 1.57 82-1
Gray 35.94 4-1 8.5 15-1 1.64 78-1
No Tip 73.21 2-1 9.35 14-1 1.87 69-1
Note: Metering tip color was formerly clear. All induction rates are base on a water pressure of 40 psi.
Leaner dilutions can be achieved by o rdering DEMA ultra lean tip kit 100-15KU.
I-783 Pg. 1 of 6
Rev. D-36632 3/10/11
Page 2
DEMA BLEND SAFES
MODELS 662-GAP & 662-GAP-1OH (ONE HAND FILL)
INSTALLATION INSTRUCTIONS
TABLE 2- 4 GPM FLOW RATE PROPORTIONER, 1/4” I.D. TUBING
Injection Rates For Viscosities Shown
Metering Tip Color
Tan 0.33 387-1 0.26 500-1 0.12 1090-1
Orange 0.42 307-1 0.32 430-1 0.17 735-1
Turquoise 0.51 251-1 0.34 382-1 0.19 676-1
Pink 0.78 165-1 0.56 230-1 0.3 422-1
Li ght Blue* 0.87 147-1 0.67 192-1 0.33 391-1
Brown 0.99 129-1 0.74 174-1 0.37 345-1
Red 1.37 93- 1 0.91 141-1 0.44 289-1
White 1.52 84-1 1.04 123-1 0.48 264-1
Green 1.72 74-1 1.22 105-1 0.52 244-1
Blue 2.13 60- 1 1.27 101-1 0.54 239-1
Yellow 3.05 42-1 1.71 75-1 0.56 229-1
Black 4.50 28-1 1.96 65-1 0.57 224-1
Purple 7.75 17-1 2.4 53-1 0.59 217-1
Gray 9.86 13-1 2.54 50-1 0.63 204-1
No Tip 19.63 7-1 3.16 40-1 0.67 190-1
1 cps 75 cps 200 cps
Oz/Gal Ratio Oz/Gal Ratio Oz/Gal Ratio
D. CHEMICAL SUPPLY: Remove Blend Safe Cover. Slip ceramic weight over inlet tube. Install the chemical supply tubing by
pushing the tubing over the barb located on the front of the proportioner (Refer to Figure 1). Place the chemical container inside the
case. Run tub ing down through holes in b ack of Blend Safe and insert the foot valve end of the chemical supply tubing into the
chemical container. Peel-off gummed labels are provided for labeling chemicals.
E. DRIP TRAY
into place. Two-sided tape or Velcro (not included) may be used to secure drip tray to door.
F. OUTLET TUBING
through the hole located at the bottom of the case. Attach tubing hanger to end of tubing, to hang up when n ot in use. Do not force
outlet tubing onto the larger barbs on the proportioner.
3) OPERATION:
The Blend Safe is now ready for use. Depressing a push button or lifting a bottle lever (select models only) opens the valve allowing
water to flow through the chemical proportioner that mixes a chemical water solution at the desired rate. The buttons are spring loaded
to prevent accidental overflow if unattended, but may be converted to locking buttons by cutting off the tab at the notch (See Figure 2).
Pushing the button and turning it a 1/4 turn clockwise at the end of its travel allows the valve to lock on. This makes it unnecessary f or
the attendant to hold the b utton while filling large containers. Tur ning the button in a counter clockwis e direction will relea se it,
allowing the valve to shut off. Note: Models with bottle le ver activation doesn’t all ow push button to lock on.
4) SERVICING:
A. Proportioner fails to draw chemical: Insuf ficient water supply pressure. 20 PSI is the minimum allow able pressure.
B. Proportioner stops drawing chemical:
: (1 GPM only) Attach to door of unit by inserting notches in back of drip tray through slots in door. Push tray down
: (4 GPM ONLY) Attach one end of the 3/8” ID tubing to the proportioner outlet barb and run the other end
Caution: Turn off water supply before servicing.
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 proportioner 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
deliming solution. (Remove all parts attached to proportioner before soaking in deliming solution.) Note: Use care
when handling hazardous chemicals.
C. Valve Malfunction
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, kic k- off spring, a nd s pacer. Che ck for dirt or damage impe ding plunger and kick-off spring movement. Inspect the
diaphragm, making sure the two small pinholes (bleed holes) in the diaphragm convolution are clear to
: Check that the button moves freely in & out, bottle lever moves up and down freely (select mo del s o nl y ) an d
I-783 Pg. 2 of 6
Rev. D-36632 3/10/11
Page 3
DEMA BLEND SAFES
MODELS 662-GAP & 662-GAP-1OH (ONE HAND FILL)
INSTALLATION INSTRUCTIONS
allow the valve to close. If so, soak proportioner body in deliming solution. (Remove all parts attached to proportioner before
soaking in deliming solution.) Note: Use care when handling hazardous chemicals.
Caution: When servic ing unit, be sure that repl acement parts have been installed according to drawing.
RETURNS: NO MERCHANDISE MAY BE RETURNED FOR CREDIT WITHOUT DEMA’S WRITTE N 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 f rom
the date of manufacture. This limited warranty does not apply to any products which have a normal life shorter tha n o ne y ea r
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 con sid ered ex pend able and are no t
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 retur ned to the factory with transpor tation prep aid. If inspection shows them to be
defective, they wil l be repaired or replaced without charge, F.O.B. f actory. DEMA assumes no liabi l it y f o r d am ag es . Ret urn
merchandise authorization number, to return units for repair or replacement, must be granted in advance of return.
Inet Hose Adapter
Push Button
Actuator
Push Button
Action Gap
Proportioner
Metering Tip
Bottle Lever Actuator
(Select Models Only)
Outlet Tube
Cabinet Lock
Chemical Container
Ceramic Weight
Foot Valve
Removable
Drip Tray
FIGURE 1
Utility Knife
FIGURE 2
I-783 Pg. 3 of 6
Rev. D-36632 3/10/11
Page 4
DEMA BLEND SAFES
DETAIL OF PRESSURE
MODELS 662-GAP & 662-GAP-1OH (ONE HAND FILL)
INSTALLATION INSTRUCTIONS
PRESSURE INDICAT ING TEE INSTALLATION
Blend Safe
Water Inlet Hose
Outlet Tubing
Pressure
Indicating
Tee
Chemical
Inlet Tubing
Water Inlet Hose
INDICATING TEE
FIGU RE 3
I-783 Pg. 4 of 6
Rev. D-36632 3/10/11
Page 5
DEMA BLEND SAFES
MODELS 662-GAP & 662-GAP-1OH (ONE HAND FILL)
INSTALLATION INSTRUCTIONS
18
33
13
32
14
FOR BOTTLE LEVER
ACTUATOR MODELS
ONLY
(Specify
Color)
3
(Specify
Color)
4
5
6
8
9
7
10
11
34
35
23
24
17
20
See page 8 for
breakdown
22
21
See page 8 for
breakdown
25
26
15 15
16
FOR MODELS
WITHOUT BOTTLE
LEVER
(Specify
Color)
(Specify
Color)
30
1
2
27
28
29
31
12
NO. PART NO. DESCRIPTION NO. PART NO. DESCRIPTION
1 66-139 Magnet Housing (Specify Color) 21 61-22GAP -2 4 GPM (1/4” Barb) Proportioner (Gray)
2 66-140 Push Button (Specify Color) 22 61-99GAP -2 1 GPM (1/4” Barb) Proportioner (Green)
3 66-333-OH Push Button Kit 23 63-78 O-Ring
4 63-35 Magnet 24 89-30-5 ½” ID X 6’ Lg. Hose Hanger Assy. (4 GPM
only)
5 63-36 Spring 25 63-79 Inlet Ba rb (1/4” Ba rb)
6 41-7-25 Enclosing Tube 26 100-15K Metering Tip Kit (14 Sizes)
7 63-87 Valve Repair Kit 27 100-12-16 ¼” ID X 28” Lg. Vinyl Supply Tubing
8 63-37 Spacer 28 61-107-2 Ceramic Weight
9 41-1-8 Kick-off Spring 29 100-16E-10 Foot Valve
10 63-38 Plunger 30 66-21 Cabinet Lock
11 41-15-10 Diaphragm 31 66-64 Drip Tray
12 63-39 Valve Body 32 67-4-1 Box Clip
13 100-38 Strainer Washer 33 66-165 Box Hinge (For the Bottom Box Only)(2
Each)
14 66-142 Garden Hose/Adapter Barb 34 63-159 Bottle Lever (OH Models Only)
15 76-2-3 Hose Clamp
16 66-98-4 3/8” Barbed Tubing
17 66-119 Hose Barb
18 66-156 Water Inlet Assembly
19 66-153 Pipe Plug & O-Ring Assy.
NO. PART NO. DESCRIPTION
ACCESSORIES
20 16-30 Action Gap Assembly 35 68-6-QD2 Pressure Indicating Tee
*Foot Valve also available with silicone (100-16S-1)or Viton (100-16V-1) rubber seals.
Please specify material when ordering
I-783 Pg. 5 of 6
Rev. D-36632 3/10/11
Page 6
DEMA BLEND SAFES
MODELS 662-GAP & 662-GAP-1OH (ONE HAND FILL)
INSTALLATION INSTRUCTIONS
5
1
1
2
3
NO. PART NO. DESCRIPTION
1 150-6 Rubber Washer
2 61-36 Flow D isk
3 16-3-6 1/2” I.D. x 6” Lg. Vinyl Outlet Tube (1 GPM Only)
4 89-30-5 1/2” I.D. x 6’ Lg. Hose Hanger Assy. (4 GPM Only)
5 63-89-1 Rubber Washer (1/32” Thick)
6 16-30 Action Gap Assembly
4
6
I-783 Pg. 6 of 6
Rev. D-36632 3/10/11
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