Hydro 3833HFA-2 Quick User Manual

Installation and Operation:

1. Remove cabinet cover. Install the short, white inner discharge tube (IDT) on the outlet of the eductor. It goes over the
smaller barbed part on the bottom of the eductor. This tube must be in place for the eductor to function. The inner discharge
tube for a 14 LPM (yellow) eductor has a yellow flooding ring inside it. Install the end of the tube nearest the flooding ring
on the eductor's inner discharge barb. To ensure the IDT is on correctly, the metal ring should be above the small barb.

2. Drill holes for the three wall anchors with an 8mm 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 your concentrate higher than the proportioner).

3. Select a metering tip (see next section), and screw into suction stub on eductor body.

4. Supply tube should reach from suction stub on eductor to bottom of the concentrate container.

5. Slip the open end of suction tube through an opening in either side of the cabinet and push over the suction stub/metering tip
on the eductor.

6. Place foot valve end of suction tubes into concentrate container. REMEMBER TO CHECK FOOT VALVE STRAINERS
PERIODICALLY FOR CLOGGING: CLEAN IF NECESSARY.

7. 1.2 metres discharge tubes are used with a 14 LPM eductor. Slide end of discharge tube over eductor discharge outlet and
IDT. Hook may be installed to allow discharge tube to hang from dispenser when not in use.

8. 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.

9. Connect water supply hose of at least 13mm ID to water inlet swivel. (Minimum 25 PSI/1.76 bar pressure, with water
running, is required for correct operation.) Connect opposite end of hose to water supply. Turn water supply on.

10. Purge air from the system by pushing the button briefly. There may be some water discharge from the eductor vents until the
air is purged.

11. 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.

12. 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 3833HFA-2

with HydroGap Air Gap Eductor

Package Contains:

1. Proportioner unit.

2. High Flow Suction Hose Assembly (with foot valve and weight installed).

3. Discharge tubes (1 Inner tube and 1 Outer tube).

4. Metering tip kit.

5. Mounting anchor kit.

6. Hook for discharge tube.

7. Instruction sheet.

Clip or bend these tabs
to depress button into
locked position.

4LPM 14 LPMTip Colour

APPROXIMATE DILUTIONS

AT 2.86 BAR FOR WATER-THIN PRODUCTS (1.0 CP)

Orifice Std. Drill
Size Number)

Ratio (per Eductor Flow)

No Tip .187 (3/16) 3:1 3.5:1
Grey .128 (30) 3:1 4:1
Black .098 (40) 3:1 4:1
Beige .070 (50) 4:1 8:1
Red .052 (55) 5:1 14:1
White .043 (57) 7:1 20:1
Blue .040 (60) 8:1 24:1
Tan .035 (65) 10:1 30:1
Green .028 (70) 16:1 45:1
Orange .025 (72) 20:1 56:1
Brown .023 (74) 24:1 64:1
Yellow .020 (76) 32:1 90:1
Aqua .018 (77) 38:1 128:1
Purple .014 (79) 64:1 180:1
Pink .010 (87) 128:1 350:1

Metering Tip Selection:

The final concentration of the dispensed solution is
related to both the size of the metering tip opening and the
viscosity of the liquid being siphoned. For water-thin
products, the chart right can be used as a guideline. If
product is noticeably thicker than water, consult the
Measurement of Concentration Procedure below to
achieve your desired water-to-product ratio. Because
dilution can vary with water temperature and pressure,
actual dilution achieved can only be ascertained by using
the Measurement of Concentration Procedure. The clear,
undrilled tip is provided to permit drilling to size not listed
should you need a dilution ratio that falls between standard
tip sizes.

Measurement of Concentration:

You can determine the dispensed water-to-product ratio
for any metering tip size and product viscosity. All that is
required is to operate the primed dispenser for a minute
or so and note two things: the amount of dispensed
solution, and the amount of concentrate used in
preparation of the solution dispensed. The water-to­product ratio is then calculated as follows:

Dilution Ratio (X:1) where X =

Amount of Mixed Solution — Amount of Concentrate Drawn

Amount of Concentrate Drawn

Dilution Ratio, then, equals X parts water to one part concentrate (X:1). If the test does not yield the desired ratio, choose
a different tip and repeat the test. Alternative methods to this test are 1) pH (using litmus paper), and 2) titration. Contact your
concentrate supplier for further information on these alternative methods and the materials required to perform them.

7

5

6

8

4

2

3

1

AccuDose Parts Diagram:

3-button unit illustrated