Knight Equipment MX-100 Installation Manual
MX-100 SERIES
MIXING STATIONS
,167$//$7,21
MOUNTING THE UNIT
(1) Choose a convenient location close to water supply and not more than 5’ off floor.
(2) Remove the cover from the unit.
(3) Hold proportioner against wall and mark keyholes — use a level for marking holes.
(4) Drill holes and install either toggle bolts or masonry screws (not supplied).
(5) Hang the unit and tighten screws — see Figures 1 and 2. Always refer to hardware
manufacturer’s specifications for weight capacity and usage.
ATTACHING THE DRIP TRAY (OPTIONAL)
(1) Locate tray 12“ to 15“ below spouts. Mount in the same manner as proportioner.
(2) Attach a length of 1/4" tubing to drip tray for draining liquids.
(3) Divert drain tube to sink, drain, or five gallon holding jug.
CONNECTING THE WATER SUPPLY
This proportioner operates best with a flowing water pressure of 30 - 40 PSI.
Fluctuating pressure can affect dilution ratios — use a water source that is not feeding
other equipment whenever possible. Water temperature should be between 40ºF and
180ºF.
(1) Attach male connector on high pressure supply hose to inlet side of proportioner
using garden hose washer.
(2) Attach female connector on high pressure hose to water source.
(3) Turn on water and check for possible leaks.
0900936 Rev C 05/01
FOR DRYWALL SURFACE
WASHER
TOGGLE
BOLT
SIDE VIEW
Figure 1
FOR CINDER BLOCK & CONCRETE
MASONRY
SCREW
SIDE VIEW
Figure 2
IMPORTANT NOTE:
If proportioner is connected to a janitor’s sink
an atmospheric vacuum breaker, a
with
special connection kit is required by A.S.S.E.
specification 1055. Failure to use this kit, or
equivalent connection means, will invalidate
the A.S.S.E. and I.A.P.M.O. (UPC)
certification. Specify P/N 7600187 when
ordering the kit.
Page 1 of 6
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STANDARD VENTURI AND FLEX-GAP
For standard venturi and Flex-Gap systems, the flow rate is controlled by a venturi
tube located within the venturi body. Venturi tubes have their GPM rating molded on
the side, or can be identified by color; WHITE = 1 GPM/ BLACK = 4 GPM.
To change the venturi tube:
(1) Disconnect tubing from venturi body.
(2) Remove venturi body.
(3) Push out existing venturi tube by inserting a pen up through the bottom of the
venturi body — see Figure 3.
(4) Insert the new venturi tube (for the desired flow rate) into the venturi body,
ensuring that it seats firmly.
VENTURI BODY
VENTURI
TUBE
(5) Thread venturi body back in place and hand-tighten.
AIRE-GAP VENTURI
For Aire-Gap venturi systems, the flow rate is controlled by a nozzle, deflector plate,
and venturi tube. These internal parts are color coded to identify their GPM rating;
BLUE = 1 GPM/BLACK = 3 GPM.
To change these parts:
(1) Disconnect tubing from venturi body.
(2) Remove Aire-Gap assembly from water valve.
(3) Remove existing nozzle, deflector plate, and venturi tube by disassembling the
Aire-Gap — see Figure 4.
(4) Reassemble the Aire-Gap using new nozzle, deflector plate, and venturi tube (for
the desired flow rate). To avoid leakage, install the rubber washer with the 3
“ears” facing upwards. Hand-tighten the venturi body to the Aire-Gap body.
(5) Thread Aire-Gap assembly back in place and hand-tighten.
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IMPORTANT: The dilution chart for the standard venturi and Flex-Gap is different
than the chart for the Aire-Gap venturi. Be sure to use the correct dilution chart for
metering tip selection.
METERING TIP SELECTION
For each valve in the system, install appropriate metering tip from the charts on page
3. Be sure the metering tip is threaded in hand-tight only.
CALIBRATING ACTUAL PRODUCT RATIOS
Figure 3
PEN
SCREEN WASHER
NOZZLE SCREENS (2)
1 GPM = 7407201
3 GPM = 7407202
AIRE-GAP BODY
DEFLECTOR PLATE
1 GPM = 7407220
3 GPM = 7407221
RUBBER WASHER
1 GPM = 7407204
3 GPM = 7407205
2300812
7407211
NOZZLE
7407200
2300781
AIRE-GAP
VENTURI TUBE
To easily calculate the ounces per gallon for a specific product:
(1) Fill a graduated cylinder or spray bottle (that has ounce markings) with product.
(2) Install metering tip closest to desired ounces per gallon — see dilution charts.
(3) Drop chemical pick-up tube into the container holding the product.
(4) Activate valve until chemical line is primed up to the metering tip.
(5) Note how many ounces (of product) are in the container.
(6) Activate valve again, and fill a one gallon container with water/product mix.
(7) Note how many ounces (of product) were used.
(8) You now have determined actual ounces per gallon for this product. Repeat this
procedure as desired for other valves and products.
Page 2 of 6
Figure 4
O-RING
1500477
AIRE-GAP
VENTURI BODY
7407203
DE-FOAM TUBE
7025903
0900936 Rev C 05/01)
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