DEMA 163-2DF-2 User manual

INSTALLATION INSTRUCTIONS
DEMA MODEL 163-2DF-2
DUAL FEED PROPORTIONER
Rev A 7/99 Form I-689
Page 1 of 2
1. PARTS
A. Proportioner Assembly
B. 2 pcs. Supply tubing with foot valve & ceramic weight.
C. Outlet tubing (3' Lg.)
D. Metering tip kit
2. INSTALLATION AND ADJUSTMENT
Screw proportioner onto garden hose outlet or faucet. Select metering tips using Table 1 as a guide and screw into each inlet
barb. Attach the 3 foot length of tubing to the proportioner outlet. This tubing must remain attached or proportioner will not
draw. Slide ceramic weights over chemical inlet tubing to keep foot valves submerged in chemical, drop foot valve ends into
chemical containers. Attach open end of tubing to proportioner inlet barbs. (Tubing may be cut to any convenient length.
Soften end in hot water for easy attachment).
3. OPERATION
WARNING: USE CARE WHEN HANDLING HAZARDOUS CHEMICALS
Turn on water. Chemical siphoning will begin as soon as the outlet tubing fills with water.
Injection Rates For
Viscosities Shown
Metering Tip Color
1
cps 75 cps 200 cps
Oz/Gal Ratio Oz/Gal Ratio Oz/Gal Ratio
Clear 0.30 430-1 0.22 592-1 0.13 864-1
Purple 0.48 265-1 0.32 406-1 0.24 524-1
Yellow 1.28 100-1 0.82 157-1 0.6 212-1
Green 1.67 77-1 1.29 99-1 1 128-1
Pink 2.36 54-1 1.65 77-1 1.25 103-1
Turquoise 3.76 34-1 2.55 50-1 1.85 69-1
Black 4.47 29-1 3.03 42-1 2.12 60-1
Gray 5.53 23-1 3.67 35-1 2.58 50-1
Red 7.00 18-1 4.79 27-1 2.79 46-1
Blue 8.78 15-1 5.39 24-1 3.06 42-1
Brown 10.95 12-1 6.49 20-1 3.35 38-1
White 14.19 9-1 7.08 18-1 3.46 37-1
Orange 17.58 7-1 7.91 16-1 3.71 35-1
Light Blue 21.75 6-1 8.66 15-1 3.9 33-1
Tan 27.98 5-1 9.15 14-1 4.11 31-1
No Tip 33.15 4-1 10.54 12-1 4.52 28-1
Table 1: 4 GPM flow rate, 3/8” barb and tubing
Note: 1 cps (centipoise) is equal to the viscosity of water, 75 cps is approximately equal to the viscosity of 10 weight motor
oil, and 200 cps is approximately equal to the viscosity of most dishwashing detergents

INSTALLATION INSTRUCTIONS
DEMA MODEL 163-2DF-2
DUAL FEED PROPORTIONER
Rev A 7/99 Form I-689
Page 2 of 2
4. SERVICING
CAUTION: Turn off water supply before servicing.
A. Failure to inject chemical
a. Low water pressure. At least 10 PSI is required.
b. Discharge tubing missing or not filling. Blend end or immerse in pail.
c. Detergent passage clogged. Remove metering tip and soak proportioner in hot water to clean internal passages.
d. Foot valve clogged. Soak in hot water.
B. Injection continues after water is turned off. Discharge tubing is below drum level. Raise outlet tubing to stop
siphoning or re-arrange installation such that drum is below outlet tubing.
CAUTION: When servicing unit, be sure that replacement parts have been installed according to
drawing.
DESCRIPTION
PART NO.
ACCESSORIES
16-3 Vinyl Tube (1/2 ID X 3' Lg.)
100-16E Foot Valve
61-9 METERING TIP (SPECIFY COLOR)
61-107-1 Ceramic Weight
Vinyl Tube (3/8" ID X 8' Lg.)100-12L
150-6 Garden Hose Rubber Washer
1
NO.
6
4
5
2
3
1
6
2
4
5
3
6