Dema 662-637GAP Installation Manual

DEMA BLEND SAFE

MODEL: 662-637GAP AND 662-637GAP-1OH (ONE HAND FILL)

INSTALL ATION INSTRUCTIONS

The Blend Safe II (Dial-A-Blend) is a modular, locking dispensing system that allows user to dispense chemicals safely, control dispenser
inventory. It, also, has the flexibility to meet changing requirements at different accounts in the field.

1. PARTS CHECKLIST:

A. Blend Safe Assembly B. ¼”ID x 8’ Long Vinyl Supply Tubing and Foot Valve
C. Ceramic Weight D. ½” ID x 6” Long Vinyl Outlet Tubing
E. Hose Hanger Assembly F. Drip Tray
G. Screw and Anchor Kit H. Label Card I. Metering Tip Kit J. Cabinet Lock Keys

*Quantity varies depending on the mo del of the Blend Safe.

2. INSTALLATION: (Refer to Figure 1):

Note: All installations must conform to local plumbing codes and use appr oved backf lo w
preventers. Pressu re indicating tee is to be inst alled with existing faucets according to loca l plumbing codes in the state of
Wisconsin and any other state that requires the use of a pressure indicating tee. WARNING: Water supply pressure should no t
exceed 125 psi and water temperature must not exceed 150°F.

A. MOUNTING AND WATER SUP PL Y:

Use mounting template enclosed to locate the mounting screw positions. Drill all of
the holes into the drywall using a 1/4” diameter bit for use with the included #10 screw and anchor set. (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 f lush with face of wall. Assemble all of the #10 long screws with a phillips screwdriver
into the anchors so the screw heads are sticking out of the wall approximately ½”. Mount the Blend Safe by inserting the screw
heads thr ough the keyhole slots in the base and tighte ning the screws. The water inlet is eq uip p ed with a female gar den hose
fitting (with strainer washer) 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 water inlet
assembly . Note: Apply pipe dope, hand-tighten, and then turn 1-1/2 times w ith a w re nch. DO NOT OVER TI GH T EN .

WARNING: Do no t

use Teflon tape to seal internal plastic threads as the thickness of the tape may cause the plastic to

crack. Use a non-welding liquid sealant instead.

B. PRESSURE INDICATING T EE INST ALL ATION:

Screw female quick disconnect to faucet an d attach pressure in di ca ti ng
tee to female quick discon nect. Attach f emale end of reinforced hose to m ale threads of tee, then attach the m al e e nd t o th e f e m al e
garden hose fitting at the water inlet of the Blend Center (See Figure 4).

C. CHEMICAL INJECTION ADJUSTMENT

: WARNING: USE CARE WHEN HANDLING HAZARDOUS

CHEMICALS. Chemical f eed rates are controlled by metering tips screwed into the selector valve barbs. Select a tip for each

barb 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

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

I-788 Pg. 1 of 5
Rev. C-36632 3/10/ 11

DEMA BLEND SAFE

MODEL: 662-637GAP AND 662-637GAP-1OH (ONE HAND FILL)

INSTALL ATION 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

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 ordering DEMA ultra lean t ip ki t 100-15KU or capil lary t ip 44-61P.

1 cps 75 cps 200 cps

Oz/Gal Ratio Oz/Gal Ratio Oz/Gal Ratio

D. CHEMICAL SUPPLY

pushing tubing over a barb on the selector valve. Place the chemical container inside the case. Run th e t ubi ng thro ug h t he hol es in
the back of the Blend Safe and insert the end of the tubing with the foot valve into the chemical container (See Figure 1). Repeat
for each chemical supply tube. Gum labels are provided for labeling the dial with the corresponding chemical.

E. DRIP TRAY (1 GPM ONLY)

the case. Push tray down into place. Two-sided tape or Velcro (not included) may be used to secure drip tray to door.

F. OUTLET TUBING (OPTIONAL 4 GPM ONLY)

the other end through the hole located at the bottom of the case. Attach tubing hanger to end of tubing, to hang up when not in
use. NOTE: 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) will allow water to flow
through the proportioner and mix a chemical water solution at the desired ratio. 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 for the attendant to
hold the button while filling large containers. Turning the button in a counterclockwise direction will release it, allowing the valve to
shut off. NOTE: Models with bottle lever do not allow push button to lock on.

4. SERVICING

A. Proportioner fails to draw chemical: 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. Propor tioner metering tip clogged with dried chemical. Remove tip and try injecting in hot water. If there is no suction,

3. Inspect proportioner to ensure that there are no mineral deposit build-ups on the nozzle. If so, soak proportioner body in

Valve Malfunction

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, kick ­off spring, and spacer. Check for dirt or damage impeding plunger and kick-off spring movement. Inspe ct th e d iaph ragm , m ak ing su re
the two small pinholes (bleed hole) in the diaphragm convolution are clear to allow the valve to close. Caution: When servicing

unit, be sure that replacement parts have been installed according to drawing.

: Remove Blend Safe cover. Slip a ceramic weigh t ov er a chemical supply tube. Install the tu bing by

: The Drip Tray is installed by inserting the tabs in the back of the tray into the sl ot s i n the do or of

: Attach one end of the ½” ID tubing to the proportion er o utl et barb an d run

:

: Caution: Turn of f water supply before servicing.

remove proportioner and soak in hot water to clear interior passages.

deliming solution. (Remove all parts attached to proportioner before soaking in deliming solution.) Note: Use care

when handling hazardous chemicals.

: Check that the button moves freely in & out, bottle lever moves up and down freely (select mod els on ly ) and th at

I-788 Pg. 2 of 5
Rev. C-36632 3/10/ 11

DEMA BLEND SAFE

MODEL: 662-637GAP AND 662-637GAP-1OH (ONE HAND FILL)

INSTALL ATION 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 y e a r from

the date of manufacture. This limited warranty does not apply to any products which have a normal life shorter t han on e y ear
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 co nsid ered ex pend able an d are no t
covered under warranty. This warranty is extended only to the original buy er 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 will be repaired or replaced without charge, F.O.B. factory . DEMA assumes no li abi li ty f o r d am ag es. R et urn
merchandise authorization number, to return units for repair or replacement, must be granted in advance of return.

R

Inlet Hose Adapter

Lever for OH (One Hand)
Model Only

Push Button

Actuator

Action Gap

Proportione r

Selector

Assembly

Outlet Tube

Cabinet Lock

with Keys

Chemical Container

Ceramic Weight

Foot Valve

Removable

Drip Tray

FIGURE 1

Push Button

Utility Knife

FIGURE 2

I-788 Pg. 3 of 5
Rev. C-36632 3/10/ 11

DEMA BLEND SAFE

MODEL: 662-637GAP AND 662-637GAP-1OH (ONE HAND FILL)

INSTALL ATION INSTRUCTIONS

Push Button

Actuator

Pipe Plug

& O-Ring

Action Gap

Proportioner

Selector Assembly

Vinyl Discharge

Tubing

Metering Tip

FIGURE 3

Chemical Container

Ceramic Weight

Foot Valve

Inlet Hose Adapter
Strainer Washer

Supply Tubing (4)

To Chemical

5

1

2

3

1

4

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 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

6

PRESSURE INDICATING TEE INSTALLATION

Blend Safe

Water Inlet Hose

Outlet Tubing

Pressure

Indicating

Tee

Water Inlet Hose

Chemical
Inlet Tubing

DETAIL OF PRESSURE

INDICATING TEE

FIGURE 4

I-788 Pg. 4 of 5
Rev. C-36632 3/10/ 11

DEMA BLEND SAFE

MODEL: 662-637GAP AND 662-637GAP-1OH (ONE HAND FILL)

INSTALL ATION INSTRUCTIONS

18

13

44

16

15

19

23

(6" Long
Tubing)

(6' Long
Tubing)

20

See page 8 for
breakdown

21

See page 8 for
breakdown

24

25

17

22

43

26

27

(Specify
Color)

32

31

39

33

35

34

40

41

38

15

(Specify
Color)

(Specify
Color)

42

36

37

14

1

2

28

29

30

(Specify
Color)

3

(Specify
Color)

4

5

6

8

9

7

10

11

12

45

46

NO. PART NO. DESCRIPTION NO. PART NO. DESCRIPTION

1 66-139 Magnet Housing (Specify Color 26 63-79 Inlet Ba rb (1/4” Ba rb)
2 66-140 Push Button (Specify Color) 27 100-15K Metering Tip Kit (14 Sizes)
3 66-333-OH Push Button Kit 28 100-12-16 ¼ ID X 28’ Lg. Vinyl Supply Tubing
4 63-35 Magnet 29 61-107-2 Ceramic Weight
5 63-36 Spring

100-16E Foot Valve

30*

6 41-7-25 Enclosing Tube 31 63-98 Selector Valve Body
7 63-87 Valve Repair Kit 32 25-77 O-Ring (Silicone)
8 63-37 Spacer 33 63-100 Retainer Spring

9 41-1-8 Kick-off Spring 34 63-51 “U” Cup
10 63-38 Plunger 35 63-101-2 Knob
11 41-15-10 Diaphragm 36 63-111-2 Selector Knob
12 63-39 Valve Body 37 58-60 Screw
13 100-38 Strainer Washer 38 63-96-3 Selector Valve Assembly
14 66-142 Garden Hose /Adapter Barb 39 66-13 Nut
15 76-2-3 Hose Clamp 40 63-104 Washer
16 66-98-4 3/8” Braided Tube 41 63-103 Screw
17 66-119 Hose Barb 42 66-21 Cabinet Lock
18 66-156 Water Inlet Assembly 43 66-64 Drip Tray
19 66-153 Pipe Plug & O-Ring Assy. 44 67-4-1 Box Clip
20 16-30 Action Gap Assembly
21 61-22GAP-2 4 GPM Proportioner (Gray)
22 61-99GAP-2 1 GPM Proportioner (Green)
23 63-78 O-Ring

NO. PART NO. DESCRIPTION

ACCESSORIES

24 16-3-6 ½” ID X 6” Lg. Vinyl Outlet Tube(1 GPM only) 45 63-159 Bottle Lever
25 89-30-5 ½” ID X 6’ Lg. Hose Hanger Assy. (4 GPM only) 46 68-6-QD2 Pressure Indicating Tee

*Foot Valve also available with silicone (100-16S-1)or Viton (100-16V-1) rubbe r seal s.

Please specify material when ordering.

I-788 Pg. 5 of 5
Rev. C-36632 3/10/ 11