DEMA
®
MODEL 294DC FOAMER & 294DC-DS DROP
STATION FOAMER
INSTALLATION INSTRUCTION
Form I-739 Page 2 of 7
Rev. F-40211
4. CHEMICAL
ADJUSTMENT
Caution: Use care when handling hazardous chemicals.
Chemical dilution rates are set with a tip screwed into the inlet barb on the metering block. Select the proper
tip using Table 3 as a guide. Cut the inlet tubing to a convenient length so that it reaches from the bottom of
the chemical container to the chemical inlet. Slip the ceramic weight over the tubing and insert the end with
the foot valve into the chemical. Attach the other end of the tubing to the barb of the chemical inlet.
5. OPERATION
Open the shutoff valve at the end of the hose. Turn on air supply and set at 40 psi. Turn on water supply. See
Table 2 for water flow and airflow.
TABLE 1
TABLE 2
HOSE SIZE
AND LENGTH
MIN.
PRESSURES
MAX.
PRESSURE
Water
Air
Water
Air
25’ of 3/4” ID
40 psi 40 psi
125 psi 125 psi
50’ of 3/4” ID
50 psi 40 psi
25’ of 1/2” ID
60 psi 40 psi
Pressure (PSI)
40 50 60 80
WATER
FLOW (GPM)
1.4 1.6 1.7 2.1
AIRFLOW
(SCFM)
3.5 4.2 4.8 6.1
Maximum Temperature – 150°F (65.5°C)
