Page 1
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.
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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
Page 3
10 11
12a
12b
13a
13b
16
14a
14b
17
18
19
AccuDose Parts Diagram/List:
DescriptionPart No.Key
1 238100 Strainer washer
2 10082835 Swivel collar (molded)
3 10082806 Swivel stem (molded)
4 10075911 Hex nipple (3-button unit only)
10075902 Nipple (2-button unit only)
10075950 O-ring (two required per nipple)
5 10082826 Connector fitting
6 10082845 Connector fitting cap
7 10080710 Button, dark grey (standard)
10080711 Button, sky blue
10080712 Button, red
10080713 Button, green
10080714 Button, light grey
10080715 Button, yellow
8 10080891 Cabinet set, 1-button unit
10080892 Cabinet set, 2-button unit
10080893 Cabinet set, 3-button unit (shown)
9 10075980 Valve parts kit
a. diaphragm
b. armature
c. spring
d. valve bonnet
10 10079010 Spring
11 10079000 Magnet
12a 160GB 4 LPM Eductor assembly
b 161GB 14 LPM Eductor assembly
c 440101 Suction stub only
13a 10070170 4 LPM inner discharge tube
b 10070470 14 LPM inner discharge tube
14a 10064794 4 LPM outer discharge tube (18cm)
b 10077315 14 LPM outer discharge tube (1.2 m)
15* 10080720 Hose hook, dark grey
(standard)
10080721 Hose hook, sky blue
10080722 Hose hook, red
10080723 Hose hook, green
10080724 Hose hook, light grey
10080725 Hose hook, yellow
* Hose hooks are for 14 LPM discharge tubes
16 690015 Metering tip (kit)
17 10031110 Tubing (supplied with weight and foot
valve installed)
18 509900 Weight
19 10076301 Foot valve -- Viton (EPDM also
available. Order 10076302.)
NOT SHOWN:
641750 Security screws (for cabinet sides)
a
b
c
d
9
12c
15
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Troubleshooting Chart:
* In hard water areas, scale may form inside the discharge end of the eductor, as well as in other areas of the unit which are
exposed to water. This scale may be removed by soaking the eductor in a descaling solution (deliming solution). To remove
an eductor located in the cabinet, firmly grasp water valve and unthread eductor. Replace in same manner. Alternatively,
a scaled eductor can be cleaned (or kept from scaling) by drawing the descaling solution through the unit. Operate the unit
with the suction tube in the descaling solution. Operate the unit until solution is drawn consistently, then flush the unit by
drawing clear water through it for a minute. Replace concentrate container and put suction tube into concentrate.
1. No discharge a. No water a. Open water supply
b. Magnetic valve not functioning b. Install valve parts kit
c. Excessive water pressure c. Install regulator if water pressure exceeds
4.14 bar (flowing)
d. Eductor clogged d. Clean* or replace
2. No concentrate draw a. Clogged foot valve a. Clean or replace
b. Metering tip or eductor has b. Clean (descale)* or replace
scale build-up
c. Low water pressure c. Minimum 1.76 bar (with water running)
required to operate unit properly
d. Discharge tube(s) not in place d. Push tube firmly onto eductor discharge
or flooding ring missing from hose barb; ensure inner discharge tube
inner discharge tube is installed and has flooding ring.
e. Concentrate container empty e. Replace with full container
f. Inlet hose barb not screwed f. Tighten, but do not overtighten
into eductor tightly
g. Clogged water inlet strainer g. Disconnect inlet water line and clean
strainer
3. Excess concentrate draw a. Metering tip not in place a. Press correct tip firmly into barb on
eductor
b. Chemical above eductor b. Place concentrate below the eductor
4. Failure of unit to turn off a. Water valve parts dirty or a. Clean* or replace with valve parts kit
defective
b. Magnet doesn't fully return b. Make sure magnet moves freely.
c. Push button stuck c. Remove button and clean cabinet/button
to remove any dirt lodged in slide recess
5. Excess foaming in discharge a. Air leak in pick-up tube a. Put clamp on tube or replace tube if brittle
b. Inner discharge tube not in place b. Install inner discharge tube
6. Water discharge from air a. Restricted discharge hose a. Ensure discharge tube is not immersed,
vents on eductor kinked or elevated. Ensure there is no
liquid in the discharge tube when beginning to operate dispenser
b. High water pressure b. Install pressure regulator if flowing water
pressure exceeds 4.14 bar
SolutionCause
Problem
10091787
Hydro Systems Europe Ltd, Unit 3 The Sterling Centre, Eastern Road, Bracknell, Berks. England RG12 2PW
Tel.: +44 (0)1344 488880 Fax: +44 (0)1344 488879 www.hydrosystemseurope.com
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