Installation and Operation:
1. Remove cabinet cover. Drill holes for the three wall anchors with a 7mm drill bit, using the cabinet back as a template
for correct 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 metres above the bottom of the concentrate container, nor below the highest concentrate level (never mount
concentrate 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) can be used to block any valve
port not being used. (This may be used for dispensing water only.)
3. Cut tubing supplied for chemical inlet (6mm ID) into lengths required so that tubes will reach from barbs on selector
valve to bottom of concentrate containers. For each inlet tube, slide a weight over one end and slip end over the
barb on a foot valve. Slide weight down to foot valve and attach opposite end of each tube over one of the hose barbs
on the selector valve.
4. Push tubes from each side through the notches in the cabinet.
5. Place foot valve end of supply tubes into concentrate containers. REMEMBER TO CHECK FOOT VALVE
STRAINERS PERIODICALLY FOR CLOGGING: CLEAN IF NECESSARY.
6. A short discharge tube is used with a 4 LPM (grey) eductor – Model 3875GB-2 ; minimum tube length is 20 cm
for correct operation. A longer tube (1.2 m) is used with a 16 LPM (yellow) eductor – Model 3874GB-2. Slide
end of tube over eductor discharge outlet. The hose hook supplied with Model 3874GB-2 may be installed on the
long tube to allow it to 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.
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 BUTTON OUT.
AccuDose
Series Proportioner
Models 3874GB-2 & 3875GB-2
Package Contains:
1. Proportioner unit.
2. Chemical inlet tubing .
3 Foot valves (4) and
weights (4).
3. Discharge tube.
4. Metering tip kit.
5. Mounting hardware.
6. Hook for discharge tube
(Model 3874GB-2 only).
7. Instruction sheet.
Clip or
bend
these
tabs to
depress
button
into locked
position.
