DEMA FI-25N-E, User Manual

 Page 3 of 21   |11262013

User Manual: Rotomolded Portable Foam Units | English

READ ALL INSTRUCTIONS BEFORE OPERATING EQUIPMENT

Manufactured Year: 2014 | Model No.: FI-25N-E, FI-25NV-E

Manufactured by: Innovative Cleaning Equipment, Inc.  

4928 W. Greenbrooke Drive S.E. Grand Rapids, MI 49512  US

Operation Instructions:

1.  Fill the tank with water and the advised percentage of 

chemical agent.

2. 

With ball valve (HV60) in the closed position, plug an air 

line into the air fitting (AP25-E). 

3.  Slowly open the ball valve (HV60) completely. 

4. 

Adjust the needle valve (NV14Y) to desired wetness or 

dryness of foam following the steps below: 

a.  Close needle valve completely in clockwise direction.

b.  Open needle valve in counter-clockwise direction 3 

complete turns.

c.  Continue to open valve in ¼ turn increments allowing 

30 seconds between adjustments until proper 

consistency of foam is achieved.

After Use Instructions: 

1.  Open drain plug (DP-A) and empty tank.

2. 

Fill tank with clean water. 

3.  Flush the unit with fresh water for 5 minutes. 

4. 

Disconnect the air line from the air fitting (AP25-E) and 

relieve any remaining pressure in the system by having 

the ball valve (HV60) in open position. 

5. 

Close the ball valve (HV60) after all pressure has been 

relieved from the system. 

6. 

Drain the tank.

Maintenance Instructions: 

To keep your portable tank foamer operating properly, 

periodically perform the following maintenance procedures:

•  Check the air pump (P56/P56K/P56V) for wear and leaks. 
•  Inspect hoses for leaks or excessive wear.  Make sure all 

hose clamps are in good condition and properly secured.

•  Replace filter (AFR25) in regulator (R25) as needed. 
•  Check the suction tube and screen for debris and clean as 

needed. 

•  Drain compressor tank on a regular basis to ensure proper 

operation of pump. 

Troubleshooting Instructions:

•  Check to ensure the discharge hose is uncoiled properly, 

and that there are no kinks that could obstruct fluid flow.

•  Check air regulator bowl (ABR25) for debris such as 

water, oil, or rust particles. Clean by unthreading the air 

regulator bowl from the air regulator (R25). 

•  If needle valve (NV14Y) valve is open too far, the pump 

(P56/P56K/P56V) will cycle improperly due to lack of air 

pressure.  If this occurs, reset needle valve as described in 

Operation Instruction #4. 

•  Make sure proper foaming chemical and concentration is 

being used. 

•  If air passes through the pump (P56/P56K/P56V) without 

cycling, the pump needs to be replaced. 

•  If foam solution backs up into air regulator bowl (ABR25), 

the check valve (CV38) needs to be replaced. 

•  If foam comes out wet, no matter where the needle valve 

(NV14Y) is positioned, the check valve (CV38) may need to 

be replaced. 

•  Check for proper air pressure on air gauge (AG100).  Air 

regulator (R25) is factory set at 50 psi (3.4 bar).  Operating 

range is 40 to 80 psi (3 to 5 bar) with 5 to 10 CFM (141.64 

to 283.30 l/min)

•  If the unit foams at a reduced pressure: 

o

Check the air compressor supplying the unit. If the 

pressure is less than 40 psi (3 bar), turn the foam unit 

off until the compressor can catch up.

o

If the air supply is 50 psi (4.14 bar) or above, check 

the AG100, which should read near 50 psi (4.14 bar).  

If the AG100 is more or less than 50 psi (4.14 bar), 

adjust the pressure by turning the knob on the top of 

the air regulator (R25). 

o

If both of the above are okay, the stainless steel 

mixing mesh (SS-MESH) could be plugged.  Remove 

and clean it by following the instructions below: 

1.  Be sure the foam unit is not plugged into an air 

supply and be sure to relieve all stored pressure 

in the unit by having the ball valve (HV60) in the 

open position. 

2. 

Remove the stainless adaptor (SSA12) from the 

tee fitting (SST12HB38). 

3.  Remove the screen and the mixing mesh from 

inside the tee fitting (SST12HB38). 

4. 

Clean any particles from the mixing mesh and 

the screen. 

5. 

Replace the mixing mesh and then the screen 

into the back of the tee and screw the stainless 

adaptor back into the tee. It is recommended 

to use a pipe thread sealant when reinstalling 

the stainless adaptor back into the tee fitting 

(SST12HB38). If the mixing mesh has a lot of 

foreign particles in it, make sure the strainer 

(STR38-IL) is still in place.

•  Check for plugged strainer (STR38-IL). Replace strainer if 

necessary.  Strainer must be used.