Dema 244BC Installation Manual

4.7 (3)

DEMA SPRAY CLEAN

MODELS: 244BC, 244BCE, 244BCP & 244BCT

INSTALLATION INSTRUCTIONS

I.PARTS:

A.Injector.

B.Spray gun.

C.Mounting screws and washers.

D.Vinyl supply tubing, foot strainer & ceramic weight.

E.Metering tip (specified size, model 244BCT only).

II.INSTALLATION: (See figure 1)

Note: All installations must conform with local plumbing codes and use approved backflow preventers.

A.INJECTOR:

Inlet fits 1/2" NPT water line (except 244BCE). Water temperature should not exceed 150 F and pressure should not exceed 125 PSI. If an inlet hose is used, a pipe-to-garden hose adapter is available (DEMA accessory part #44-5). The injector may be mounted in any position, but the arrow must point in the direction of flow. If mounting is insecure, use enclosed mounting screws for attaching to a wall, inserting the washers between the wall and injector to provide easy attachment of outlet hose.

B.SPRAY GUN:

Connect spray gun to the injector's outlet using a high pressure garden hose (Dema part no. 44-3, 25 ft. x 1/2" hose). Total hose length must not exceed values shown in Table 1. (Dema hose bracket part no. 44-4S is available as an accessory for hose lengths up to 50 ft.)

 

 

TABLE 1

 

 

Hose, I.D.

3/8"

1/2"

5/8"

3/4"

 

 

 

 

 

Max. Length:

15 ft.

50 ft.

100 ft.

250 ft.

 

 

 

 

 

C.LIQUID DETERGENT OR SANITIZER CONTAINER:

Detergent may be drawn directly from any size container, which usually is set on the floor. Use enclosed plastic tubing for connecting to injector, first cutting to desired length and dropping the end with the foot strainer and ceramic weight into the container. Push other end over supply tubing fitting (See figure 2).

III.OPERATION:

WASH or RINSE is controlled by the slide (see Figure 2). For “wash,” the slide must be in the up position. Push the slide down for “rinse.

WASH:

With the slide in the “wash” position, turn on water and squeeze the spray gun lever fully open. The detergent or

 

sanitizer is drawn into the water stream.

RINSE:

With the slide in the “rinse” position, the spray gun lever may be squeezed to any desired position.

When the Spray Clean is not in use, shut off the inlet valve and open the gun to relieve the high pressure in the hose.

IV. ADJUSTMENT: (See figure 2)

WARNING: Use care when handling hazardous chemicals.

A.Models 244BC, 244BCE & 244BCP:

Turn the small recessed screw to adjust the injection rate. Four turns counterclockwise provides the maximum. Table 2 shows the maximum injection rates in ounces of product per gallon of water obtainable for various fluid viscosities.

I-127

Pg. 1 of 5

Rev. B 10/01

 

Dema 244BC Installation  Manual

DEMA SPRAY CLEAN

MODELS: 244BC, 244BCE, 244BCP & 244BCT

INSTALLATION INSTRUCTIONS

 

 

TABLE 2

 

 

Viscosity, cps

1

 

75

220

500

 

 

 

 

 

 

Oz/Gal (maximum)

11.10

 

3.60

1.50

0.69

 

 

 

 

 

 

B.Model 244BCT:

Chemical feed rate is controlled by a metering tip screwed into the supply tubing fitting. Select a tip using Table 3 as guide.

TABLE 3

 

 

 

 

 

 

 

Injection Rates For Viscosities Shown

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Metering Tip

 

1 cps

 

 

75 cps

 

200 cps

 

500 cps

 

Color

 

Oz/Gal

 

Ratio

 

Oz/Gal

 

Ratio

 

Oz/Gal

 

Ratio

 

Oz/Gal

 

Ratio

 

 

 

 

 

 

 

 

 

 

 

Tan

 

0.35

 

366-1

 

0.25

 

512-1

 

0.22

 

585-1

 

0.08

 

1600-1

 

Orange

0.50

 

256-1

0.38

337-1

0.30

427-1

0.12

1067-1

 

Turquoise

 

0.70

 

183-1

 

0.50

 

256-1

 

0.40

 

320-1

 

0.19

 

674-1

 

Pink

1.00

 

128-1

0.70

183-1

0.54

237-1

0.24

533-1

 

Clear

 

1.25

 

102-1

 

0.90

 

142-1

 

0.67

 

191-1

 

0.50

 

256-1

 

Brown

1.40

 

91-1

1.00

128-1

0.75

171-1

0.51

251-1

 

Red

 

1.75

 

73-1

 

1.25

 

102-1

 

0.88

 

145-1

 

0.53

 

242-1

 

White

2.20

 

58-1

1.50

85-1

0.98

131-1

0.54

237-1

 

Green

 

2.50

 

51-1

 

1.60

 

80-1

 

1.05

 

122-1

 

0.56

 

229-1

 

Blue

3.10

 

41-1

2.00

64-1

1.15

111-1

0.57

225-1

 

Yellow

 

4.70

 

27-1

 

2.40

 

53-1

 

1.25

 

102-1

 

0.60

 

213-1

 

Black

5.90

 

22-1

2.70

47-1

1.32

97-1

0.63

203-1

 

Purple

 

8.50

 

15-1

 

3.00

 

43-1

 

1.36

 

94-1

 

0.64

 

200-1

 

Gray

9.75

 

13-1

3.20

40-1

1.38

93-1

0.65

197-1

 

No Tip

 

11.10

 

12-1

 

3.60

 

36-1

 

1.50

 

85-1

 

0.69

 

186-1

Note: Injection rates shown are derived from a 40 psi flow rate using 25 ft. of 1/2" ID Hose and a 40-8B spray gun.

I-127

Pg. 2 of 5

Rev. B 10/01

 

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