Installation and Operation:
1. Remove cabinet cover. Drill holes for the three wall anchors with a 8mm drill bit, using the cabinet back as a template
for proper spacing of the mounting screws. Install mounting anchors, and then screws in top two anchors. Slide
key holes in cabinet back over screw heads, tighten screws, then install bottom screw. Do not mount more than
1.8 meters above the bottom of the concentrate container, nor below the highest concentrate level (never mount the
concentrate container higher than the proportioner).
2. Select metering tips (up to 4) for the selector valve (see next two sections). Push each tip firmly into a separate hose
barb extending from the selector valve. A tip with no hole (clear plastic colour) can be used to block any valve port not
being used. (This may be used for dispensing water only.)
3. Attach the chemical suction tube assembly to the selector valve, sliding an open end of each piece of tubing over one barb
on the valve. Ensure suction tubes are on the barbs far enough to prevent air from leaking into tube.
4. Slide tubes from each side through the notch in the cabinet.
5. Place foot valve end of supply tube assembly into concentrate container. REMEMBER TO CHECK FOOT VALVE
STRAINER PERIODICALLY FOR CLOGGING: CLEAN IF NECESSARY.
6. A short discharge tube is used with a 4 LPM (grey) eductor – Model 3872GB-2 ; minimum tube length is (20 cm) for correct
operation. A longer tube (1.2 m) is used with a 16LPM (yellow) eductor – Model 3871GB-2. Slide end of tube over eductor
discharge outlet. The hose hook supplied with Model 3871GB-2 may be installed on the long tube to allow it to conveniently
hang from dispenser when not in use.
7. Replace cabinet cover. Push the sides in, behind the latch holes, to snap the cover in place. The two screws provided
may be installed in the holes in the cabinet sides to prevent easy removal of cover.
8. Connect water supply hose of at least 13mm ID to water inlet swivel. (Minimum 1.76 Bar pressure,
with water running
,
is required for correct operation.) Connect opposite end of hose to water supply. Turn water supply on.
9. Purge air from the system by depressing the buttons briefly. There may be some water discharge from the eductor
vents until the air is purged.
10. Push button to start flow of desired water/concentrate solution, and hold until supply tube is primed (filled). Then push
the button whenever dispensing is desired, and release button to stop flow of solution. If you wish to be able to lock
the button in the "on" position: Clip or bend the two tabs behind the lower front portion of the button. (See diagram below)
This allows the button to be fully depressed and allows it to latch in the "on" position.
TO UNLOCK, PULL THE BUTTON
OUT.
11.
It is essential that the discharge hose is not obstructed. If discharge is restricted, water will flow out of the
eductor vents. Do not start to operate the dispenser with liquid in the discharge tube.
AccuDose
Series Proportioner
Models 3871GB-2 & 3872GB-2
Package Should Contain:
1. Proportioner unit.
2. Chemical inlet tubing
assembly with foot valve
& weight.
3. Discharge tube.
4. Metering tip kit.
5. Mounting hardware.
6. Hook for discharge tube
(Model 3871GB-2 only).
7. Instruction sheet.
Clip or
bend
these
tabs to
depress
button
into locked
position.
