Dover Hydro Accumax QDV Посібник користувача - Сторінка 3
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installation / maintenance
1.
Find suitable place close to water source for unit. Mounting bracket should be installed approx. 5' from the floor. Level bracket
and mark holes. Drill 5/16" holes and install mounting anchors and screws in bracket.
2.
Remove dispenser cover by first pulling to remove the knob from the QDV valve, then depressing tabs on side of dispenser and pull
the cover forward and off.
3.
Hang cabinet on bracket. Mark hole for lower cabinet screw. Remove cabinet and drill 9/32" hole. Install anchor and screw in lower
cabinet hole. When mounting unit, do not mount more than 5 feet from the floor. Also, never mount your concentrate container higher
than the unit. Keyhole slots are also provided in the cabinet back if the mounting bracket won't be used.
4.
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 securi-
ty 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 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).
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 NECESSARY
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. 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.
operation
1. Connect opposite end of water inlet hose to water supply. Turn on water supply.
2. Purge air from the system by depressing the button briefly. There may be some water discharge from the eductor vents until the air
is purged.
3. 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.
tip chart
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 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.
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 solution, and the amount
of concentrate used in 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 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.
Page 3
Amount of Concentrate Drawn
APPROXIMATE DILUTIONS
AT 40 PSI FOR WATER-THIN PRODUCTS (1.0 CP)
Tip
Orifice
Ratio (per Eductor Flow)
Color
Size
1 GPM
No Tip
.187
Grey
.128
Black
.098
Beige
.070
Red
.052
White
.043
Blue
.040
Tan
.035
10:1
Green
.028
16:1
Orange
.025
20:1
Brown
.023
24:1
Yellow
.020
32:1
Aqua
.018
38:1
Purple
.014
64:1
Pink
.010
128:1
3.5 GPM
3:1
3.5:1
3:1
4:1
3:1
4:1
4:1
8:1
5:1
14:1
7:1
20:1
8:1
24:1
30:1
45:1
56:1
64:1
90:1
128:1
180:1
350:1