Dover Hydro AccuDose Series User manual

10089610
Rev. B 12/07
Package Should Contain:
1. Proportioner unit.
2 . Supply tubing 21' total.
3. Foot valve assemblies &
weights (5).
4. Discharge tubing for
each eductor.
5. Metering tip kits.
6. Mounting anchor kit.
7. Hose hook for 3.5GPM
eductor.
8. Instruction sheet.
AccuDose Series Proportioner
Models 38741 & 38751
with E-Gap Eductors
Hydro Systems 3798 Round Bottom Road, Cincinnati, OH 45244 s Phone: [phone] sFax: [phone]
Installation and Operation:
1 . Remove cabinet cover. Drill holes for the three wall anchors with a 5/16" 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 6 feet
(1.8 meters) above the bottom of the concentrate container, nor below the highest concentrate level (never mount
your 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 being
used. (This may be used for dispensing water only).
3. Attach the chemical suction tube assembly to the selector valve, sliding the open end of each piece of tubing over one barb
on the valve. Be sure suction tubes are on the barb far enough to prevent air from leaking into tube.
4. Slip other end of supply tube through an opening in either side of the cabinet and push over the hose barb/metering
tip on the eductor. (Repeat for all eductors.)
5 . Place foot valve ends 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 the 1GPM eductor; minimum tube length is 8 inches (20cm) for proper operation.
Longer tubes (4 feet) are used with a 3.5 GPM eductor. Do not remove the flooding rings from inside the tubes. Slide
end of tube with flooding ring over eductor discharge outlet. (Repeat for all eductors.) Hooks may be installed on longer
tubes to allow discharge tube 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 3/8" ID to water inlet swivel. (Minimum 25 PSI pressure, with water running,
is required for proper operation.) Connect opposite end of hose to water supply. Turn water supply on.
9. 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). This allows the button to be fully depressed and allows it to
latch in the “on” position. To lock, pull the button out.
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 that 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
60 PSI (flowing)
d. Eductor clogged d. Clean* or replace
e. Clogged water inlet strainer e. Disconnect inlet water line and clean s
strainer
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 20 PSI (with water running)
required to operate unit properly
d. Discharge tube and/or flooding d. Push tube firmly onto eductor discharge
ring not in place hose barb, or replace tube if it doesn't
have a 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
h. Air leak in chemical pick-up tube h. Put clamp on tube or replace tube if brittle
i. Selector out of position i. Assure selector is in position desired
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
SolutionCause
Problem
Clip or
bend
these
tabs to
depress
button
into locked
position.
THANK YOU FOR YOUR INTEREST IN OUR PRODUCTS
protective clothing and eyewear when dispensing chemicals or other materials.
observe safety and handling instructions of the chemical manufacturers.
direct discharge away from you or other persons or into approved containers.
dispense cleaners and chemicals in accordance with manufacturer's instructions. Exercise
CAUTION when maintaining your equipment.
equipment clean to maintain proper operation.
protective clothing and eyewear when working in the vicinity of all chemicals, filling or
emptying equipment or changing metering tips.
re-assemble equipment according to instruction procedures. Be sure all components are
firmly screwed or latched into position.
only to tap water outlets (85 PSI maximum).
If the unit is used to fill a sink or the discharge hose can be placed into a sink, the unit must
be mounted so that the bottom of the cabinet is above the overflow rim of the sink.
WEAR
ALWAYS
ALWAYS
ALWAYS
KEEP
WEAR
ALWAYS
ATTACH
Hydro Systems manufactures quality chemical proportioning equiment. Please use this equipment
carefully and observe all warnings and cautions.
*********************************************************NOTE*********************************************
NOTE

AccuDose Select Parts Diagram List:
AccuDose Select Parts Diagrams:
2
31
10 11
abc
d
9
1 238100 Strainer washer
2 10082830 Swivel collar (molded)
3 10082811 Swivel stem (molded)
10075950 O-ring (two per nipple)
4 10075925 Pipe plug
5 10080710 Button, grey (standard)
10080711Button, sky blue
10080712Button, red
10080713Button, green
10080714Button, light grey
10080715 Button, yellow
6 10080894 Cabinet
7 10020700 Selector valve grommet
10020900 Back up ring for grommet
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 at left 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.
NOTE: A 1 GPM eductor is grey; a 4 GPM eductor
is yellow. Refer to parts diagram if unfamiliar with
names of system components.
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 concen-
trate used in preparation of the solution dispensed.
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.
4
6
5
7
Key DescriptionPart No. 14
9 10075980 Valve parts kit
a. diaphragm, b. armature,
c. spring, d. valve bonnet
10 10079010 Spring
11 10079000 Magnet
12 290 1 GPM eductor assembly
291 3.5 GPM eductor assembly
13 a 10088822 1 GPM discharge tube assembly
b 9004849 3.5 GPM discharge tube assembly
14 10080730 Hose hook, dark grey (standard)
10080731 Hose hook, sky blue
10080732 Hose hook, red
10080733 Hose hook, green
10080734 Hose hook, light grey
10080735 Hose hook, yellow
* Hose hooks are for 3.5GPM discharge tubes
15 10080957 Selector replacement kit:
d. support clip e. Suction stub,
f. O-ring, g. selector valve assembly
16 690014 Metering tip (kit)
17 500870 Tubing, 1/4" x 7'
18 509900 Weight
19 10089410 Footvalve, viton (EPDM also
available order 10076302)
NOT SHOWN:
641751 Screws (cabinet sides)
Key DescriptionPart No.
Suction tube assembly
(materials for 4 provided)
attach open ends to barbs
on valve.
17
19
18
1 GPM 3.5 GPMTip Color
APPROXIMATEDILUTIONS
AT 40 PSI FOR WATER-THIN PRODUCTS (1.0 CP)
Orifice Std. Drill
Size Number) Ratio (per Eductor Flow)
No Tip .187 (3/16) 3:1 6.5:1
Grey .128 (30) 3:1 6.5:1
Black .098 (40) 3:1 7:1
Beige .070 (50) 4:1 10:1
Red .052 (55) 5:1 16:1
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
13a
13b
12a
12b
18
15
efg
d