DEMA® MODEL 693T FOAM STATION II
INSTALLATION INSTRUCTION
I-747
Page 3 of 8
Rev. E-40261
11/13/14
Table 3: P203CAM Injector Injection Rate
Metering
Tip Color
Injection Rate for Viscosities Shown
1 cps
75 cps
200 cps
Oz/Gal Ratio Oz/Gal Ratio Oz/Gal Ratio
Tan
0.40
320-1
0.25
512-1
0.20
640-1
Orange
0.50
256-1
0.35
366-1
0.25
512-1
Turquoise
0.75
171-1
0.45
284-1
0.35
366-1
Pink
0.95
135-1
0.65
197-1
0.45
284-1
Light Blue*
1.30
98-1
0.80
160-1
0.55
233-1
Brown
1.50
85-1
0.90
142-1
0.60
213-1
Red
1.90
67-1
1.00
128-1
0.70
183-1
White
2.25
57-1
1.30
98-1
0.80
160-1
Green
2.64
49-1
1.50
85-1
0.90
142-1
Blue
3.20
40-1
1.75
73-1
1.00
128-1
Yellow
4.85
26-1
2.25
57-1
1.10
116-1
Black
6.50
20-1
2.40
53-1
1.15
111-1
Purple
9.20
14-1
2.70
47-1
1.20
107-1
Gray
10.40
12-1
2.85
45-1
1.25
102-1
No Tip
12.80
10-1
3.50
37-1
1.55
83-1
* Metering tip color was formerly clear.
All injection rates are based on 40 PSI inlet water pressure and a water flow rate of 2.5 GPM.
4. OPERATION:
The 693T Foam Station permits the operator to select a chemical to foam (left hand lever), or a chemical to spray (right 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 693T. Adjust the air regulator upwards gradually until you obtain the thickness of foam you desire. Push the air
regulator knob back in to lock the setting in place. This operation must be repeated in the same order each time the 693T is
shut down and restarted (water first then gradually build up air pressure).
TABLE 4: Water Flow & Air Flow Setting.
PRESSURE (PSI)
40 50 60 80
WATER FLOW (GPM)
1.4 1.6 1.7 2.1
AIR FLOW (SCFM)
3.5 4.2 4.8 6.1
