Dover Hydro MultiFlex User manual

10094396
Rev. B 7/13
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
d. Eductor clogged d. Clean* or replace
e. Clogged water inlet strainer e. Disconnect inlet water line and clean
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 25 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
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
3798 Round Bottom Road, Cincinnati, OH 45244 U.S.A. • Phone: [phone] •Fax: [phone] • www.hydrosystemsco.com
Installation and Operation:
1. Proportioner unit
2. Supply tubing
3. Discharge tubes for QDV
4. Mounting bracket & anchor kit
5. Metering tip kit
6. Instruction sheet
Package Should Contain:
1. Find suitable place close to water source for unit. Remove dispenser cover by first pulling to remove the knob from the QDV
valve, then depressing the button on the top of the dispenser and pull the cover forward and off. Do not mount dispenser
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. Remove mounting rail from the back of dispenser by rotating the black lock bars, located on the inside back of dispenser,
rotate toward the outside of the dispenser.
3. Hold mounting rail level against wall and mark (2) mounting holes. Drill 9/32" hole and install anchors in wall. Secure mount-
ing rail to wall with screws provided. NOTE: Distance from top of mounting rail to top of dispenser is 2.5". If mounting
dispenser under cabinet or shelf be sure to leave clearance to access button at the top of dispenser for removal of cover.
4. Place the dispenser over the mounting rail aligning the bosses around the mounting screws with the large holes in the
dispenser back. Rotate the locking tabs toward the center of the dispenser to secure the dispenser to the wall. NOTE:
IT IS REQUIRED THAT A SAFETY SCREW BE INSTALLED. Mark the wall using one of the lower holes in the back of the
dispenser. Remove the dispenser from the mounting rail by rotating locking tabs toward the outside of the dispenser then
lifting the dispenser off of the mounting rail. Drill 9/32" hole and install anchor. Reattach the dispenser to the mounting rail
(see #4). Install security screw through the back of the dispenser into anchor in the wall.
5. Select metering tips (up to 4) for the QDV valve. (see next two sections) Push each tip firmly into a separate hose barb ex-
tending 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).
6. Install four 5.5" precut lengths of tubing onto the four hose barb ports of the QDV valve. Insert four in-line check valves,
with arrows pointing toward the QDV valve, into the open ends of the pre-cut lengths of tubing.
7. Cut supply tubing provided into separate supply tubes for each product to be dispensed. Supply tubes should reach from
in-line check valve barb to bottom of concentrate container. Push one end of supply tube over the hose barb of the in-line
check valve. Slide weight over end of each tube, then install foot strainers on ends of supply tubes before placing into
concentrate containers. REMEMBER TO CHECK FOOT STRAINERS PERIODICALLY FOR CLOGGING: CLEAN IF NECES-
SARY
8. Connect water supply hose of at least 3/8"ID to water inlet swivel. (Minimum 25 PSI pressure, with water running, is re-
quired for proper operation.) Connect opposite end of hose to water supply. Turn water supply on. Replace dispenser cover.
Hook two bottom latches, and swing up to snap over button on the top of dispenser. Reinstall knob for QDV by pushing
knob firmly onto stem.
9. A short discharge tube is used with the 1GPM eductor; minimum tube length is 8 inches (20cm) for proper operation.
Longer tubes (6 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 discharge outlets.) Hooks may be installed on longer
tubes to allow discharge tube to conveniently hang from dispenser when not in use.
10. To operate button fill units, depress button to dispense product, release button to stop flow. IF YOU WISH TO BE ABLE TO
LOCK THE BUTTON IN THE "ON" POSITION: Depress button and slide button lock up, TO UNLOCK, DEPRESS BUTTON
AND RELEASE.
11. Bottle fill activates by inserting a spray bottle over the discharge tube and lifting lever until flow starts. To stop flow, lower
bottle off discharge tube. To operate units with remote bucket fill hold and depress lever of gun. To stop flow release lever.
IF YOU WISH TO BE ABLE TO LOCK THE REMOTE BUCKET FILL IN THE "ON" POSITION: Depress lever and position
lock on bottom of lever, TO UNLOCK, DEPRESS LEVER AND RELEASE.
QDV Proportioner
protective clothing and eyewear when dispensing chemicals or other materials or when working in the vicinity of all chemi-
cals, filling or emptying equipment, or changing metering tips.
observe safety and handling instructions of the chemical manufacturer.
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.
reassemble equipment according to instruction procedures. Be sure all components are firmly screwed or latched into
position.
only to tapwater outlets (85 PSI maximum)
equipment clean to maintain proper operation.
if the unit is used to fill a sink or 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.
THANK YOU FOR YOUR INTEREST IN OUR PRODUCTS
WEAR
ALWAYS
KEEP
Please use this equipment carefully and observe all warnings andcautions.
***************************************************NOTE ********************************************
ATTACH
NOTE

Metering Tip Selection:
Thefinalconcentrationofthedispensedsolutionisrelated
toboth thesize ofthe meteringtip openingand theviscos-
ity of the liquid being siphoned. For water-thin products,
the chart at right can be used as a guideline. If product is
noticeablythicker than water, consulttheMeasurement of
Concentration Procedure below to achieve your desired
water-to-productratio.Becausedilutioncanvarywithwater
temperatureandpressure,actualdilutionachievedcanonly
beascertainedbyusingtheMeasurementofConcentration
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 3.5 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 solu-
tion,and the amountof concentrate usedin preparation of
the solution dispensed. The water-to-product 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 differ-
ent 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.
MultiFlex Parts Diagram/List:
MultiFlex Parts Diagram:
1 10094351 Mounting Rail
2 10094375 Connector, T-Rail
3 10094332 Button
4 10094362 Medallion, Button & Select
5 10094340 Bracket, single valve
6 10094341 Lock Bar, valve bracket
7 10075950 O-ring, EP, 016
8 10094381 Elbow swivel
9 10094384 O-ring, EP, 018
10 10094382 Pivot, elbow swivel
11 10082830 Swivel collar
12 10082801 Swivel stem
13 238100 Strainer washer
14 10094383 Cap, magnet
15 10079000 Magnet
16 10079010 Spring
17 10075980 Valve parts kit
a. diaphragm
b. armature
c. spring
d. valve bonnet
18 10075926 Pipe plug, 3/8 plastic
19 a 3L + 1H QDV assembly
b 2L + 2H QDV assembly
20 690014 Metering tip kit
21 10094355 Adapter,knob,QDV
22 10094338 Knob, QDV
23 a 505808 1.0 GPM discharge tube 8"
b 505806 3.5 GPM discharge tube 6'
24 500805 Tubing 1/4" x 5.5"
25 10090463 In-line Check valve, 1/4" barb
26 500814 Tubing 1/4" x 14'
27 509900 Weight
28 609600 Foot strainer
DescriptionPart No.Key
APPROXIMATE DILUTIONS
AT 40 PSI FOR WATER-THIN PRODUCTS (1.0 CP)
Tip
Color Orifice Size Std. Drill Number
Ratio (per Eductor Flow)
1 GPM 3.5 GPM
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
1
2
3
5
6
7
87910
11
12
13
14
15
16
d
c
b
a
17
7
18
23a,b
24
4
Black lock bar
in UNLOCKED
position
Black lock bar
in LOCKED
position
19a,b 20
25
27
28
26
Dispenser back Dispenser cover
Water Inlet
Safety screw
location
21
22