Page 1
DEMA MODEL 692T FOAM STATION I
1. PARTS CHECKLIST:
ITEM DESCRIPTION QTY.
A.
B.
C.
D.
E.
F.
2. INSTALLATION:
This product is designed only to be used as described in this instruction sheet. Adhere to all warnings and
cautions identified in this document.
INSTALLATION INSTRUCTION
Foam Station Assembly 1
#10 Screw & Anchor Kit Set (Total: 4 Screws & 4 Anchors) 1
Ceramic Weight 1
¼” ID Tubing & Foot Valve Assembly 1
Metering Tip Kit (P/N 61-9K) 1
Label Card 1
WARNING: Installations must conform to all local and national plumbing codes and use
approved backflow prevention and pressure relief devices where required.
ALWAYS DISCONNECT DISPENSER FROM WATER SOURCE WHEN DISPENSER
IS NOT IN USE.
A. Mounting and Water Supply:
Locate mounting holes on a permanent vertical wall. Drill all holes into the drywall using a ¼” diameter bit for use with the
included #10 screw and anchor set. (If mounting unit to wood and you do not plan to use the included anchors, drill 1/8”
diameter holes.) Insert the anchors into drilled holes and hammer them into the wall until they are flush with face of wall.
Assemble the #10 screws with a phillip screwdriver into the anchors for the keyhole slots so the screw heads are sticking out
of the wall approximately ½”. Mount the unit by inserting the screw heads through the keyhole slots and tightening the
screws. Secure the unit by inserting screws into the lower 2 holes.
The water inlet is equipped with a female garden hose fitting. The fitting may be removed to permit direct connection to
3/8” NPT pipe. Note: Apply pipe dope, hand tighten, and then turn 1-1/2 times with a wrench. DO NOT OVER
TIGHTEN.
WARNING: Do not use Teflon tape to seal internal plastic threads as the extra thickness of the tape may cause the
plastic to crack. Use non-welding liquid sealant instead.
WARNING: Water supply should not exceed 125 psi and water temperature must not exceed 150°F.
B. Outlet Connection:
Connect the discharge hose to the garden hose fitting . NOTE: Be sure to clamp garden hose onto wall approximately 1
ft. below the unit, (Clamps, screws, & anchors are not supplied.) Attach shut-off valve to the discharge end of the hose.
See Table 1 for hose limitations.
Always read SDS for all chemicals used and follow personal protective guidelines.
TABLE 1: Outlet Garden Hose Connection
GARDEN HOSE SIZE AND
LENGTH
WATER AIR
25’ OF ¾” ID 40 PSI 40 PSI
50’ OF ¾” ID 50 PSI 40 PSI
25’ OF ½” ID 60 PSI 40 PSI
MIN. PRESSURES
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DEMA MODEL 692T FOAM STATION I
C. Chemical Supply:
WARNING: USE CARE WHEN HANDLING HAZARDOUS CHEMICALS.
Place the chemical container in a convenient location not more than six feet below the Foam Station. (Greater lifts will
reduce injection capabilities). The top of the container should not be above the Foam Station. Cut the vinyl tube to any
convenient length that will allow the tubing to reach the bottom of the container. Drop the tubing end with the strainer into
the chemical container. Push the other tubing end over the chemical inlet barb located on the side of the Foam Station.
3. CHEMICAL ADJUSTMENT:
The chemical feed rate is controlled by metering tips screwed into the barb on the side of the Foam Station. The feed rates can
be changed using different metering tips. To select the proper metering tip size for the desired dilution ratio, refer to Table 2.
Metering
Tip Color
Oz/Gal Ratio Oz/Gal Ratio Oz/Gal Ratio Oz/Gal Ratio
Clear 0.84 152-1 0.65 197-1 0.45 284-1 0.30 427-1
Purple 1.35 95-1 1.10 116-1 0.90 142-1 0.60 213-1
Yellow 2.40 53-1 2.00 64-1 1.50 85-1 1.10 116-1
Green 4.20 30-1 3.40 38-1 2.65 48-1 2.10 61-1
Pink 5.25 24-1 4.50 28-1 3.45 37-1 2.60 49-1
Turquoise 9.40 14-1 7.25 18-1 5.45 23-1 3.70 35-1
Black 11.75 11-1 8.80 15-1 6.35 20-1 4.20 30-1
Gray 14.50 9-1 10.80 12-1 7.75 17-1 4.75 27-1
Red 18.00 7-1 13.20 10-1 8.30 15-1 5.00 26-1
Blue 20.60 6-1 14.70 9-1 8.65 14.8-1 5.20 25-1
Brown 24.10 5-1 16.15 8-1 9.30 14-1 5.50 23-1
White 27.50 4.7-1 17.80 7-1 9.70 13-1 5.70 22-1
Orange 30.00 4.3-1 18.50 6.9-1 10.10 12.7-1 5.85 21.9-1
Light Blue 32.00 4-1 18.90 6.8-1 10.20 12.5-1 6.00 21-1
Tan 32.50 3.9-1 19.25 6.6-1 10.40 12.3-1 6.25 20.5-1
None 34.25 3.7-1 20.45 6-1 10.60 12-1 6.50 20-1
1 cps 75 cps 200 cps 500 cps
INSTALLATION INSTRUCTION
TABLE 2
Injection Rate for Viscosities Shown
All induction rates are based on 40 psi water pressure and 40 psi air pressure.
4. OPERATION:
The 692T Foam Station permits the operator to select a chemical to foam (left hand lever), or a clear water rinse (middle lever)
by opening and closing the appropriate valve with its lever. ONLY ONE VALVE SHOULD BE OPEN AT ANY TIME. If
two valves are opened simultaneously, the injector will not draw chemical.
NOTE: When using the spray wand, make sure that the shut-off valve at the end of the hose is in the fully open position in
order to draw chemical product.
To Foam:
First: Open the left hand lever all the way. Water rushing through the foamer will draw up soap and send soapy water
through the hose.
Next: Pull out on the air regulator knob above the air gage. Set the air regulator to 40psi. Open the air valve on the left side of
the 692T. Adjust the air regulator upwards gradually until you obtain the thickness of foam you desire. Push the air regulator
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DEMA MODEL 692T FOAM STATION I
INSTALLATION INSTRUCTION
knob back in to lock the setting in place. This operation must be repeated in the same order each time the 692T is shut down and
restarted (water first then gradually build up air pressure).
TABLE 3: Water Flow & Air Flow Setting
WATER FLOW (GPM)
AIR FLOW (SCFM)
5. SERVICING:
PROBLEM: SEE SITUATION:
Unit will not draw or sto ps drawing chemical 1, 2, 3, 5, 6, 10, 11, 12, 13, 15, 16, 17
Poor foam quality 1, 2, 3, 5, 6, 10, 11, 12, 13, 15, 16
Foam surges 1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 13, 15, 16
Foam output is too wet 1, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 16
Foam output is too dry 2
Water is flowing into chemical container 12
Foam does not clean adequately 4, 8, 11, 14
POSSIBLE SITUATIONS
Situation Cause Solution
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Chemical tube not immersed in chemical
or chemical depleted.
Air pressure is too high for water. Adjust air regulator down.
Water pressure is too low. At least 30 psi is required. Increase if possible, or decrease air pressure.
Chemical to water ratio is too low. Change metering tip to one that is larger.
Foam hose is kinked. Straighten hose.
Foam hose is too long or wrong size. See Table 1.
Air supply is inadequate. Increase air pressure by regulating up.
Detergent is wrong. Use a more effective detergent, and be sure that product is recommended
Using an oiler on the airline may
deteriorate the quality of the foam.
Holes or cuts are in chemical inlet tube. Replace the tube.
Strainer and/or metering tip are blocked. Remove, clean or replace.
Solution check valve is not working. Remove, clean or replace.
Air regulator is not working. Remove, clean or replace.
Soil has hardened on surface. Reapplication may be necessary. Be sure to rinse foam off before it dries.
Rust or build-up is clogging the foamer
aspirator.
Water scale or chemical build-up may
have formed in the water jets.
More than one valve is open. Close the rinse valve.
Immerse tube in chemical or replace.
for foaming.
Use only clean, dry air.
Disconnect water from unit and remove injector from unit. Visually
inspect. Remove blockage.
Place the chemical tube in descaling acid and completely open the shutoff valve. Let unit run until the chemical tube is filled with acid, then
close shut-off valve and water supply. Elevate the chemical tubing and
outlet hose until acid has had enough time to descale. Repeat if necessary.
For severe cases, disassemble unit and soak foamer body in descaling
acid.
PRESSURE (PSI)
40 50 60 80
1.4 1.6 1.7 2.1
3.5 4.2 4.8 6.1
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DEMA MODEL 692T FOAM STATION I
INSTALLATION INSTRUCTION
Return Policy
No merchandise may be returned for credit without DEMA Engineering Company’s written permission. Return Merchandise
Authorization (RMA) number required in advance of return.
Warranty
DEMA products are warranted against defective material and workmanship under normal use and service for one year from the date of
manufacture. This limited warranty does not apply to any products which have a normal life shorter than one year or failure and damage
caused by chemicals, corrosion, improper voltage supply, physical abuse or misapplication. Rubber and synthetic rubber parts such as
“O”-rings, diaphragms, squeeze tubing and gaskets are considered expendable and are not covered under warranty. This warranty is
extended only to the original buyer of DEMA products. If products are altered or repaired without prior approval of DEMA, this
warranty will be void.
Defective units or parts should be returned to the factory with transportation prepaid. If inspection shows them to be defective, they will
be repaired or replaced without charge. F.O.B. factory DEMA assumes no liability for damages. Return merchandise authorization
number to return units for repair or replacement must be granted in advance of return.
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DEMA MODEL 692T FOAM STATION I
INSTALLATION INSTRUCTION
4
14
1
2
FOAMER ASSEMBLY
(SHOWN EXPLODED
ON PAGE 6)
13
3
6
7
8
6
9
8
9
10
5
17
5
16
15
18
19
12
NO. PART NO. DESCRIPTION
1 100-38 Strainer Washer
2 65-10 Swivel Coupling
3 65-14 Swivel Adapter
4 69-8-2 Top Manifold
5 66-153 Pipe Plug & O-Ring Assy.
6 99-8-2 Valve Knob
7 69-2 Adapter
8 30-5-14 O-Ring (EP)
9 58-83-1 Pipe Adapter
10 69-7-1 Bottom Manifold
11 65-18-1 Outlet Fitting
12 93-2 Pressure Gauge
13 25-137-12 ¼” NPT Nipple X 1 ½” Lg.
11
NO. PART NO. DESCRIPTION
14 16-11 ¼” NPT Ball Valve
15 24-11L Foot Strainer
16 61-107 Ceramic Weight (3/8” ID Tubing)
17 100-12L Vinyl Tubing (3/8” ID X 8 Ft.
Long)
ACCESSORIES
NO. PART NO. DESCRIPTION
18 93-14 ¾”ID X 25’ Lg. Outlet Hose
19 93-18 Plastic Foam Wand
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DEMA MODEL 692T FOAM STATION I
INSTALLATION INSTRUCTION
FOAMER ASSEMBLY BREAKDOWN
16
26
24
25
15
14
22
23
13
21
1
2
4
9
12
11
10
17
19
20
18
3
5
6
7
8
NO. PART NO. DESCRIPTION
1 29-18-2 5/16 Internal Snap Ring
2 29-17-2 Washer (S.S.) –Air Hose
3 29-7 O-Ring (Viton)
4 29-5P Ball 11/32” Dia.
5 29-16 Nozzle
6 29-11 Diffuser
7 29-15-2 Pin
8 69-3 Adapter
9 29-12 Check Valve Repair Kit
10 25-29V Metering Knob O-Ring (Viton)
11 23-34-3 Check Valve Core
12 23-9-2 Check Valve Spring
13 23-10 Check Valve Ball (9/32” Dia. S.S.
14 23-11V Check Valve O-Ring (Viton)
15 24-59-5 Metering Knob
16 61-9 Metering Tip (Specify Color)
NO. PART NO. DESCRIPTION
17 30-5V-1 O-Ring (Viton)
18 2914 Air Nozzle
19 93-6-2 Air Check Valve Spring
20 26-49P Ball 3/16” (Teflon)
21 90-35V Air Check Valve Spring
22 29-17-3 Washer (S.S.) – Foamer inlet
23 29-18-4 7/16” Internal Snapring
24 93-1 Pressure Regulator
25 29-10 Hi Lo Screw (Req’d)
ACCESSORIES
NO. PART NO. DESCRIPTION
26 61-9K Metering Tip Kit
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