DEMA 633AG-1 & 633AG-4 BLEND CENTER
INSTALLATION INSTRUCTIONS
I-459
Pg. 1 of 6
Rev. F-42084
9/8/16
1.
PARTS:
A. Blend Center assembly
B. 1 pc. ¼" I.D. or 3/8" I.D. x 8 ft. long supply tubing, foot valve & ceramic weight
C. 1 pc. 9/16" I.D. x 6 ft. long vinyl outlet tubing
D. 2 pcs. #8 pan head 1-1/2" long mounting screws & anchors
E. 1 pc. label card
F. Metering tip kit
2.
INSTALLATION:
Note: Pressure indicating tee is to be install with existing faucets according to local plumbing codes in the state of
Wisconsin and any other state that requires the use of a pressure indicating tee.
A.
Mounting & Water Supply:
Remove the two cover retainer screws and the cover from the blend center assembly. Any number of blend centers can be
coupled together by first removing the pipe plugs in all but the last unit, then connecting the male hose thread of one unit to
the female inlet hose adapter of the next unit. Mount the unit(s) in position on the wall and locate the position for the
mounting screws. Only two screws are necessary to mount up to four units coupled together. Mount the units(s) to the wall
and replace the covers and screws. The water inlet is equipped with a female garden hose fitting (with strainer washer) for
attaching a water supply hose. The unit is designed so water can be supplied to either side by interchanging the pipe plug
and the female hose fitting. Note: Apply pipe dope, hand tighten, and then turn 10 times with a wrench.
DO NOT OVER
TIGHTEN.
B.
Pressure Indicating Tee Installation:
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 the male end to the female garden hose fitting at the water inlet of the
Blend Center (See Figure 3). Water supply should not exceed 125 psi and water temperature must not exceed 160°F.
C.
Chemical Supply:
Place the chemical containers in a convenient location not more than 6 feet below the blend center (greater lifts will reduce
injection capacities). Insert the ends with the foot valves of the 8 foot 1/4" I.D. or 3/8" I.D. vinyl tubing into the chemical
containers. Cut the vinyl tubing to any convenient length that will allow them to extend from the bottom of the chemical
container to the proportioner inlet barbs. (See Figure 1) Gummed labels are provided for labeling chemicals.
D.
Outlet:
Cut the 9/16" I.D. outlet tubing to the desired length and attach it to the proportioner outlets. Longer lengths may be used
up to 10 feet. The 7" long, 3/16" tubing must be left on the 633-164AG model to insure priming.
E.
Chemical Injection Adjustment:
WARNING: USE CARE WHEN HANDLING HAZARDOUS CHEMICALS.
Chemical feed rates are controlled by metering tips screwed into the proportioner barbs. Select a tip for each barb using the
tables.
This product is designed only to be used as described in this instruction sheet. Adhere to all warnings and
cautions identified in this document.
WARNING:
Installations must conform to all local and national plumbing codes and use
approved backflow prevention and pressure relief devices where required.
ALWAYS DISCONNECT DISPENSER FROM WATER SOURCE WHEN DISPENSER
IS NOT IN USE.
Always read SDS for all chemicals used and follow personal protective guidelines.
