Hydro systems HydroChem 912 User manual

Troubleshooting Guide:
Problem Cause Solution
1. No discharge a. No water a. Open water supply
b. Excessive water pressure b. Install regulator if pressure
exceeds 85 PSI
c. Eductor clogged c. Clean* or replace
2. No concentrate draw a. Clogged check valve a. Clean or replace
b. Metering tip clogged b. Rinse in hot water or replace:
DO NOT REAM CLEAN!
c. Eductor clogged c. Clean or replace
d. Clogged water inlet d. Clean screen
e. Clogged foot strainer e. Clean or replace
f. Low water pressure and/or f. Minimum 25 PSI and 4 GPM
volume flow required to operate unit
g. Concentrate container empty g. Replace with full container
h. Check valve not screwed into h. Tighten, but DO NOT OVER
eductor firmly TIGHTEN!
3. Excess concentrate draw a. Metering tip not in place a. Press correct tip firmly into barb
(Or wrong metering tip)
4. Water flow won't shut off a. Ball valve defective a. Replace
5. Leaks at plastic and a. Compression nut loose a. Tighten nut 1/2 turn
copper junctions
6. Low or no water flow a. Inlet screen clogged a. Clean or replace
b. Supply source inadequate b. 4 GPM flow necessary to unit.
Move unit or replumb incoming
line.
c. Scaled eductor or fittings c. Clean* or replace
7. Backflow into concentrate a. Eductor check valve inoperable a. Clean or replace check valve
* In hard water areas, scale (mineral deposits) may form at the discharge of the eductor. This scale may be
removed by soaking the eductor in a descaling (deliming) solution or by running the descalant through the
system.Whenremovinganeductor for soaking,firmly grasp theeductor and unthreadthe adapters located
above and below the eductor. Replace in the same manner.
Hydro Systems Company
3798 Round Bottom Rd.
Cincinnati, OH 45244
Phone:[phone]
10069291 Rev. F
2/02
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 after each use in accordance with instruction sheet.
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).
WEAR
ALWAYS
ALWAYS
ALWAYS
CLEAN
WEAR
ALWAYS
ATTACH
Hydro Systems manufactures quality proportioning and dispensing equipment. Please use this equipment carefully and
observe all warnings and cautions.
************************************************************ NOTE ********************************************************
Wall mounted, high volume washing, foaming and/or sanitizing proportioner with two product eductors.
HydroChem Model 912
Multifunction Proportioning and Dispensing System
Package includes:
-- complete unit mounted on stainless steel back plate with formed ABS plastic cover
-- (2) 7-foot vinyl product suction tubes with foot strainers
-- (2) metering tip kits
-- (4) screws and (4) wall anchors for wall mounting (use 9/32" drill)
-- parts list and product structure diagram
Instructions for Operation:
1. Attach unit to wall using hardware provided.
2. Select metering tips (see section on metering tip selection) and press tips firmly into hose barbs provided at
theside of theeductors.Install product suctiontubes on hosebarbs.The strainer endof the suctiontubescan
be dropped directly into the concentrate containers.
3. Connectwater inlet hose with 3/4" male gardenthreadto female swivel at top left side of unit. Tightentoavoid
leaking.
4. Connect discharge hose to male 3/4" discharge provided at bottom of unit.
5. Turnonwater supplytounit. Minimum25 PSIwater pressureand4GPMflow arerequired tooperate theunit.
Hose of 1/2" ID is recommended if the hose length will be 50 feet or less. Use 3/4" ID hose if the total length
of the hose will exceed 50 feet.
6. Turnonproductvalvetobeginproportioninganddispensing.Shutoffthevalveandturnonrinse(bottom)lever
for full volume rinse.
NOTE: By removing the four cover-attaching screws (two top and two bottom), the cover can be removed by
sliding it to the RIGHT (handles in the horizontal, or OFF position). Reassembly is the reverse of this
process: Align the handles with holes in the cover and slide the cover on from right to left. Replace the
screws.
Metering Tip Selection:
Thefinalconcentrationofthedispensedsolutionisrelatedtothesizeofthemeteringtiporifice,theviscosityofthe
liquid being siphoned, water pressure, water flow rate, and other factors in the application. A chart is provided on
the next page which can be used as a guideline for selecting a metering tip when proportioning water-thin
concentrates. Test the actually achieved dilution using the Measurement of Concentration procedure discussed
onthe nextpage. Ifproductviscosity isgreater thanthat ofwater,chooseatip witha largerorifice thanthatwhich
woulddeliverthedesiredwater-to-productratioforawater-thinproduct.Testtheactuallyachievedratiousingthe
Measurement of Concentration procedure on the next page. Continue to choose and test tips until the desired
dilution is achieved. Two clear, undrilled tips are supplied to permit drilling orifice sizes not listed if necessary.

PARTS LIST (Refer to diagram)
Key # Part Number Description
1 238100 Strainer washer
2 317801 Swivel connector
3 371300 Reducer bushing
4 604400 2 -1/2" bushing
5 133000 Branch tee
6 470101 Nipple
7 90032500 Tee
8 223500 Clamp
9 10075925 Pipe plug
10 133100 Ball valve (complete)
133101 Ball valve handle
133102 Ball valve nut
133105 Handle sleeve
11 328900 Hose connector adapter
12 276700 Swivel connector
270700 Hose washer
13 440800 3.5 GPM eductor, GH out
14 10069280 Check valve, Viton*
15 10027209 Metering tip (kit)
Key # Part Number Description
16 500870 Suction tube, 1/4" x 7'
17 509900 Weight
18 609600 Foot strainer
19 90032510 Discharge elbow
20 133200 Cross
21 605400 Hose hanger
22 10082902 3/8" Tubing, nylon
23 10082905 Body, male 3/8"
10082901 Brass insert, 3/8" tube
10082906 Nut 3/8"
24 133500 Stainless steel base
25a 506502 Swivel nut
b 276800 Swivel stem
270700 Hose washer (not visible)
NOT SHOWN:
133600 Cover, ABS plastic
* EPDM check valve available: Order 10069281
HydroChem Parts Diagram
123 5
10
11
12
13
14
15
16
17
25a
25b
19
21
24
22
23
20
9
87
6
4
6
11
18
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
water/product mixture, and the amount of concentrate used in preparation of the solution dispensed. The
water-to-product ratio is then calculated as follows:
Dilution (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 adn the
materials required to perform them.
APPROXIMATE DILUTIONS
AT 40 PSI FOR WATER-THIN PRODUCTS (1.0 CP)
Orifice Std. Drill
Size Number) Ratio
Tip Color
CONVERSION CHART:
Ratio Equivalents to
Standard Measures
Oz./Gal. Ratio %
No Tip .187 (3/16) 10:1 128 1:1 50.0
Gray .128 (30) 10:1 64 2:1 33.3
Black .098 (40) 10:1 32 4:1 20.0
Beige .070 (50) 12:1 21 6:1 14.3
Red .052 (55) 16:1 16 8:1 11.1
White .043 (57) 24:1 14 9;1 10.0
Blue .040 (60) 28:1 8 16:1 5.9
Tan .035 (65) 32:1 6 24:1 4.0
Green .028 (70) 48:1 4 32:1 3.0
Orange .025 (72) 64:1 3 48:1 2.0
Brown .023 (74) 80:1 2 64:1 1.5
Yellow .020 (76) 96:1 1 128:1 0.8
Aqua .018 (77) 128:1 1/2 256:1 0.4
Purple .014 (79) 256:1 1/4 512:1 0.2
Pink .010 (87) 384:1
Lt. Purple .009 (89) 512:1