DEMA MODEL 292QD AERATING WAND
FOR LOW PRESSURE FOAMING
INSTALLATION INSTRUCTIONS
I-408
Pg. 1 of 2
Rev. D30591
1.
OPERATION:
Model 292QD wand is designed to push onto the nozzle or spray gun #40-14QD, for use with Dema Spray Clean Model Numbers
603T, 604T, or 606T. Adjust chemical feed at the injector as required to get good foam. Table 1 gives the maximum injection
capacities when aerating wand is used. The inlet water pressure (at the injector) should be at least 40 PSI to get good foam. Table
2 lists the maximum hose lengths for various dia. hoses.
TABLE 1
Maximum Injection Capacities
VISCOSITY - CPS
1
75
220
OZ. PER GAL.
10
5
2 1/2
TABLE 2
Maximum Hose Lengths
HOSE I.D.
1/2"
5/8"
MAX. LENGTH
25 FT.
75 FT.
WARNING:
USE CARE WHEN HANDLING HAZARDOUS CHEMICALS.
2.
SERVICING:
CAUTION:
TURN OFF WATER SUPPLY BEFORE SERVICING.
Failure to make foam can be caused by:
a. Low water pressure. 40 PSI is minimum.
b. No foaming agent in the detergent.
c. Insufficient detergent. Back off the injector metering screw.
d. Hose kinked or longer than recommended.
If unit stops operating:
a. Check for proper detergent feed.
b. Disassemble wand to check for clogged or dirty parts & passages.
CAUTION: WHEN SERVICING UNIT BE SURE THAT REPLACEMENT PARTS HAVE BEEN INSTALLED
ACCORDING TO DRAWING.
RETURNS:
NO MERCHANDISE MAY BE RETURNED FOR CREDIT WITHOUT DEMA’S WRITTEN PERMISSION.
RETURN MERCHANDISE AUTHORIZATION 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.
