Page 5 of 8 | 20220322
User Manual: 5 Gallon Smart Foam Unit | English
READ ALL INSTRUCTIONS BEFORE OPERATING EQUIPMENT
Model No.: FI-5N-SM, FI-5NK-SM, FI-5NV-SM AND RELATED UNITS
Troubleshooting Instructions:
•
Check to ensure that the discharge hose is uncoiled
properly, and that there are no kinks that could obstruct
fluid flow.
•
Check the suction line and strainer for debris or damage.
Clean or replace as needed. To prevent damage to the
unit, the strainer (STR38-IL) must always be used.
•
Check the air regulator bowl (ABR25) and air filter (AFR25)
for debris such as water, oil, or rust particles. Clean by
unthreading the air regulator bowl (ABR25) from the air
regulator (R25).
•
If the needle valve (NV14Y) is open too far, the pump
(P56/P56K/P56V) may cycle improperly due to lack of air
pressure. If this occurs, close and readjust the needle
valve (NV14Y) as described in the Operation Instructions.
•
Make sure proper foaming chemical and concentration
are being used.
•
If air passes through the pump (P56/P56K/P56V) without
cycling, the pump needs to be replaced.
•
If solution backs up into the 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 the air gauge (AG100).
The 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 (141.6 to 283.3 l/min).
•
If the unit operates at a reduced pressure:
1. Check the air compressor supplying the unit. If the
pressure is less than 40 psi, turn the unit off until the
compressor can catch up.
2. If the air supply is 50 psi (3.4 bar) or above, check
the air gauge (AG100), which should read near 50 psi
(3.4 bar). If the air gauge reads more or less than 50
psi (3.4 bar), adjust the pressure by turning the knob
on the top of the air regulator (R25).
3. If the problem persists, the stainless steel mixing
mesh (SS-MESH) inside the tee fitting (SST12HB38)
could be plugged. Remove and clean the mesh
following the instructions below:
a. Ensure that the unit has been flushed and
disconnected from the air supply according to
the “After Use Instructions.” Also ensure that
the unit tank is empty, and/or that the valve
(PVCV34FM) at the base of the suction line is
closed.
b. Remove the stainless hose barb (HBSS1258)
from the tee fitting (SST12HB38).
c. The stainless steel mixing mesh (SS-MESH)
is located inside the tee fitting (SST12HB38).
Remove the old mesh and the screen that
holds it in place. If the mesh and screen are
in good condition, they can be cleaned and
re-used. If not, they should be replaced with
new parts.
d. Insert the new mesh (SS-MESH).
e. Insert the new screen (SSST). Make sure it is
seated securely, but not bent or deformed.
f. Reconnect the hose barb (HBSS1258) to the
tee fitting (SST12HB38). Attach the 5/8 inch
hose to the hose barb (HBSS1258) and secure
it with the screw band clamp (SSC58).
g. If you found a lot of particles or blockages
inside the mesh, check the suction line
strainer (STR38-IL) to make sure it is in place
and operating correctly.
•
If the unit activates when the air trigger port is not
covered:
1. Verify that the air trigger port is clean and free of
blockages or debris, and the discharge hose is not
kinked or obstructed.
2. If the problem persists, try bypassing the air trigger.
To do this, disconnect the 1/4 inch hose from
the wand. Point the wand in a safe direction and
connect an air line to the unit. Then, use your thumb
or finger to seal the open port of the 1/4 inch hose
at the wand.
a. If the unit activates when you connect the air
line, the valve block (SM-PV) may need to be
replaced.
b. If the unit does not activate when you
connect the air line, the hose or wand
assembly may need to be replaced.
•
If the unit does not activate when the air trigger port is
covered:
1. Confirm the incoming air supply is consistently 50 psi
(3.4 bar) on the air guage (AG100).
2. If the problem persists, the valve block (SM-PV) may
need to be replaced.
