DEMA 925N User manual

USER
MANUAL
MODEL NUMBER:
925N
925N-K
925N-V
AND RELATED UNITS
25 Gallon Air Operated Portable Foam
Equipment
English (Original Instrucons)

Page 2 of 6 | 11042014
User Manual: Rotomolded Portable Foam Units | English
READ ALL INSTRUCTIONS BEFORE OPERATING EQUIPMENT
Model Number: 925N, 925N-K, 925N-V and related units
Specicaons:
Hose ............ 30 feet reinforced hose, 3/4 inch inside diameter
(9 meters reinforced hose, 19 mm inside diameter)
Foam Output.................................... 20 to 45 gallons/minute
(75 to 170 liters/minute)
Foam Distances ............................... 25 to 30 feet (7 to 9 meters)
Liquid Temperature ........................ 40˚F to 100˚F (4.4˚C to 37˚C)
Noise Level...................................... Average 79 dB(A)
Discharge Wand Vibraon Level ….. Maximum 2.5 m/s²
Dimensions:
Length ....................................... 22 in (559 mm) approximately
Width ........................................ 19 in (483 mm) approximately
Height ....................................... 47 in (1194 mm) approximately
Weight, including discharge hose and wand:
(Empty) ................................ 50 lbs (23 kg) approximately
(Full) ..................................... 223 lbs (101 kg) approximately
Requirements:
Compressed Air Pressure Requirements: Air regulator (R25)
factory set at 50 psi (3.4 bar). Operang range is 40 to 80 psi (3
to 5 bar) with 5 to 10 CFM (141.64 to 283.30 l/min)
Chemical requirements: follow all instrucons from chemical
manufacturer.
Air Operated Double Diaphragm Pump Models Oered:
P56: Polypropylene body with Santoprene diaphragm
P56V: Polypropylene body with Viton diaphragm
P56K: Polypropylene body with Kalrez diaphragm
Acceptable Products:
Alkaline cleaners, Causc cleaners, Sanizers, and Acids
* D-Limonene may only be used with Kalrez pump
* Chlorine may only be used with Viton or Kalrez pump
DO NOT USE: All hydrocarbons
Read this manual completely and understand the
machine before operang or servicing it.
• Always wear protecve clothing, gloves, and eyewear
while operang or servicing unit.
• Avoid contact of cleaning agent with skin and eyes. If
contact occurs, see Safety Data Sheet (SDS) sheet for
further rst aid measures.
• Follow safety instrucons of chemical manufacturer SDS.
• Never point the discharge wand at anyone.
• Incoming air pressure cannot exceed 100 psi (7 bar).
• Aer each use, relieve all remaining pressure in the
system by unplugging the air line from the unit and
opening the discharge ball valve to prevent accidental
discharge.
• Aer relieving the pressure from the unit, store the unit
with the ball valve in the closed posion.
• Be sure to ush the unit with fresh water for 5 minutes
when switching from an alkaline to an acid or an acid to
an alkaline.
• Do not exceed a uid temperature of 100˚F (37˚C).
• Only use clean and dry air. Air must be ltered and free
of moisture or pump life will be diminished. If needed,
install an air dryer before unit.
• Do not use air lubricator before the unit.
PROTECT THE ENVIRONMENT
Please dispose of packaging materials, old machine
components, and hazardous uids in an environmentally safe
way according to local waste disposal regulaons.
Always remember to recycle.
*Specicaons and parts are subject to change without
noce.
WARNING

Page 3 of 6 | 11042014
User Manual: Rotomolded Portable Foam Units | English
READ ALL INSTRUCTIONS BEFORE OPERATING EQUIPMENT
Model Number: 925N, 925N-K, 925N-V and related units
Operaon Instrucons:
1. Follow all instrucons from chemical manufacturer.
Fill the tank with water and the advised percentage of
chemical concentrate.
2. With ball valve (HV60) in the closed posion, plug an air
line into the air ng (AP25).
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 direcon.
b. Open needle valve in counter-clockwise direcon 3
complete turns.
c. Connue to open valve in ¼ turn increments allowing 30
seconds between adjustments unl proper consistency
of foam is achieved.
Aer Use Instrucons:
1. Flush the unit with fresh water for 5 minutes.
2. Disconnect the air line from the air ng (AP25) and
relieve any remaining pressure in the system by opening
the discharge ball valve (HV60).
3. Close the ball valve (HV60) aer all pressure has been
relieved from the system.
Maintenance Instrucons:
To keep your portable tank foamer operang 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 condion and properly secured.
• Replace lter (AFR25) in regulator (R25) as needed.
• Check the sucon tube and screen for debris and clean as
needed.
• Drain compressor tank on a regular basis to ensure proper
operaon of pump.
Troubleshoong Instrucons:
• Check to ensure the discharge hose is uncoiled properly,
and that there are no kinks that could obstruct uid ow.
• Check air regulator bowl (ABR25) for debris such as
water, oil, or rust parcles. 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
Operaon Instrucon #4.
• Make sure proper foaming chemical and concentraon is
being used.
• If air passes through the pump (P56/P56K/P56V) without
cycling, the pump needs to be replaced.
• If foam soluon backs up into air regulator bowl (ABR25),
the check valve (CV38) needs to be replaced.
• If foam comes out wet, no maer where the needle valve
(NV14Y) is posioned, 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). Operang
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, turn the foam unit o
unl the compressor can catch up.
o If the air supply is 50 psi (3.4 bar) or above, check the
AG100, which should read near 50 psi (3.4 bar). If
the AG100 is more or less than 50 psi (3.4 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 instrucons 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 posion.
2. Remove the stainless adaptor (SSA12) from the
tee ng (SST12HB38).
3. Remove the screen and the mixing mesh from
inside the tee ng (SST12HB38).
4. Clean any parcles 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 ng
(SST12HB38). If the mixing mesh has a lot of
foreign parcles in it, make sure the strainer
(STR38-IL) is sll in place.
• Check for plugged strainer (STR38-IL). Replace strainer if
necessary. Strainer must be used.

Page 4 of 6 | 11042014
User Manual: Rotomolded Portable Foam Units | English
READ ALL INSTRUCTIONS BEFORE OPERATING EQUIPMENT
Model Number: 925N, 925N-K, 925N-V and related units
PVCV34FM
CST3SS
TANK-25N
DFP7
COT
DP-A
CST3SS-L
SSAXLE20.5
AS1-VS
SSP12
FWAX15
W15
FWAX15
PVCV34FM
CST3SS
TANK-25N
DFP7
COT
DP-A
CST3SS-L
SSAXLE20.5
AS1-VS
SSP12
FWAX15
W15
FWAX15
(see parts list
for color opons)
HBSS1234
H34B-H
(Available per .)
SSC34
TANK ASSEMBLY
ITEM NUMBER: TANK-25N-A
HOSE AND WAND ASSEMBLY
ITEM NUMBER: SSWA38-HA30
HBSS1234 HHSB1238 W387HV60
ZERO TIP FOAM WAND ASSEMBLY
ITEM NUMBER: SSWA38
30  (9 m) HOSE ASSEMBLY
ITEM NUMBER: H34-30
HBSS1234 SN1212HV60 PW10 ST80200
FAN TIP FOAM WAND ASSEMBLY
ITEM NUMBER: PWA34-ST
AKSS34-P
AKSS-HPC
AKSS34-P
AKSS-HPC
ANTI-KINK SPRING ASSEMBLY
ITEM NUMBER: AKSS34

Page 5 of 6 | 11042014
User Manual: Rotomolded Portable Foam Units | English
READ ALL INSTRUCTIONS BEFORE OPERATING EQUIPMENT
Model Number: 925N, 925N-K, 925N-V and related units
NV14Y
FWP12
SSA14
AP25
HBSS1234
PLATE ASSEMBLY
ITEM NUMBER (Santoprene pump): PA-PF34
ITEM NUMBER (Kalrez pump): PA-PF34K
ITEM NUMBER (Viton pump): PA-PF34V
HHPB3414
STR38-IL
HBSSEL1438
SSC38
BPS-58SO
PVCV34FM
BPS-58SO
P56-BRKT-SCREW
HBSSEL1438
NV14Y
HBSS1438
SSC38EC14-2
SSC38
P56, P56K, or P56V
HBSSEL1814
P56-BRKT
R25
SST12HB38
HBSSEL1438
AG100
CV38
Plate - Inside View
Plate - Back View
OPTIONAL COMPONENTS
WATER SEPARATOR
ITEM NUMBER: WS-20CFM
30  (9 m) AIR HOSE ASSEMBLY
ITEM NUMBER: AH30

Page 6 of 6 | 11042014
User Manual: Rotomolded Portable Foam Units | English
READ ALL INSTRUCTIONS BEFORE OPERATING EQUIPMENT
Model Number: 925N, 925N-K, 925N-V and related units
ITEM NUMBER DESCRIPTION
AG100 1.5 INCH DRY MODEL 20 DUAL SCALE GAUGE
AH30 30 FT. AIR HOSE WITH QUICK CONNECT FITTINGS
AHB-3816 ALLEN HEAD BOLT 3/8 -16
AKSS34 SS ANTI-KINK SPRING FOR 3/4 INCH HOSE WITH PIN
AKSS34-P SS ANTI-KINK SPRING FOR 3/4 INCH HOSE
AKSS-HPC ANTI-KINK STAINLESS STEEL HITCH PIN CLIP
AP25 PLUG 1/4 NPTM AIR FITTING - BRASS
AS1-VS 1/4-20 X 1/2 PHIL TRUSS MACH SCREW 19-8 W/516
ORANGE VIBRASEAL PATCH
AW516 5/16 LONG ARM HEX KEY HARD #519011
B8X58 8-15 X 5/8 inch PHIL FLAT TY-A 316 S.S.
BPS-58SO Back Panel Screw - 5/8 inch with Stand O
BPS-SSR 1/4 INCH PUSHNUT BOLT RETAINER STAINLESS STEEL
COT 1/8 X 1 COTTER PIN 18-8 S/S
CST3SS 3in S.S. SWIVEL CASTER WITHOUT LOCK
CST3SS-L 3in S.S. SWIVEL CASTER WITH LOCK
CV38 PVC CHECK VALVE 3/8 BARBS - SS SPRING
DFP7 7 INCH HINGED CAP ASSEMBLY - INCLUDES BLACK CAP,
LID FLANGE AND HINGE PIN
DFP7-C 7 INCH FILL CAP POLYPRO BLACK
DFP7-F 7 INCH TANK LID FLANGE POLYPRO
DFP7-PIN HINGE PIN FOR DFP7-C & DFP7-C
DFP7-C-BL 7 INCH FILL CAP POLYPRO BLUE PANTONE
DFP7-C-GN 7 INCH FILL CAP POLYPRO GREEN PANTONE
DFP7-C-RD 7 INCH FILL CAP POLYPRO RED PANTONE
DFP7-C-YL 7 INCH FILL CAP POLYPRO YELLOW PANTONE
DP-A DRAIN PLUG ASSEMBLY INCLUDES DRAIN PLUG & GASKET
DP FRONT DRAIN PLUG FOR PORTABLE UNIT POLYPRO
DP-G FKM LATHE CUT 60 DUROMETER FKM
DP-INSERT 304 STAINLESS DRAIN PLUG INSERT
EC14-2 OETIKER CLAMP 13.8
EC75 OETIKER CLAMP-12/04/07
F34SS-L SS CRIMP FERRULE 1.90inches X 1.5 inches LONG
FW38X78 FLAT WASHER 3/8X7/8 X.050
FWAX15 FLAT AXLE WASHER
FWP12 7/8 ID X 1.5 OD X 0.05 THK SSFW
FWP14 C-816 1/2in SS WASHER
H14B-H 1/4 INCH BLUE HOSE - Available per .
H34B-H 3/4 INCH BLUE HOSE - Available per .
H38B-H 3/8 INCH BLUE HOSE - Available per .
HBSS1234 STAINLESS HOSE BARB 1/2 X 3/4
HBSS1438 STAINLESS HOSE BARB 1/4 MPT X 3/8 BARB
HBSSEL1438 S.S. HOSE BARB ELBOW 1/4 INCH NPT X 3/8 HOSE BARB
HBSSEL1814 304 S.S. ELBOW 1/8 INCH NPT X 1/4 INCH HOSE BARB
HHPB3414 HEX HEAD POLY REDUCER BUSHING 3/4 X 1/4
HHSB1238 HEX HEAD S.S. REDUCER BUSHING 1/2in X 3/8
HV60 1/2in STAINLESS BALL VALVE - w/ WELDED NUT
NV14Y FLOW CONTROL VALVE - INCLUDES BLACK KNOB
NV14Y-HNDL KNOB FOR 2839-1/4 NEEDLE VALVE
P56 5700 PUMP WITH SANTOPRENE SEALS - INCLUDES HOSE
BARBS, AIR FITTING, AND AIR PORT
P56K 5700 PUMP WITH KALREZ SEALS - INCLUDES HOSE
BARBS, AIR FITTING, AND AIR PORT
P56V 5700 PUMP WITH VITON SEALS - INCLUDES HOSE BARBS,
AIR FITTING, AND AIR PORT
20756103B Polypro G57 Air Port x HB Straight, w/ Viton o-ring
HB14P 1/4in BRASS HB AIR FITTING /G57/P56
HB5638 HOSE BARB FOR P56 PUMP
HB5638K HOSE BARB FOR P56K PUMP
HB5638V HOSE BARB FOR P56V PUMP
P56-BRKT PUMP BRACKET- STAINLESS STEEL
P56-BRKT-SCREW HI LO SCREW FOR RETAINING P56-BRKT
PLPF PORTABLE FOAMER BACK PLATE W/ HINGE AND HOLES
PLPF-PIN 302 STAINLESS PORTABLE PLATE HINGE PIN
PVCV34FM PVC VALVE 3/4in FPT X 3/4in MPT
PW10 3/4in BLACK POLY PRO X 10in - FPTBE - SCH.80
R25 AIR REGULATOR INCLUDES AIR FILTER AND BOWL
AFR25 AIR FILTER for R25
ABR25 METAL AIR BOWL for R25
S142058-VS 1/4-20 X 5/8 PHIL TRUSS MACHINE SCREW 18-8 W/#516
VIBRASEAL ORANGE PATCH
S5161812 5/16-18 x 1/2 Phil Pan 18-8
SN1212 1/2in HEX STAINLESS STEEL NIPPLE
SSA14 S.S. 304 MALE/FEMALE ADAPTOR 1/4 NPT X 1/4 NPT
SSAXLE20.5 S.S. AXLE 20.5 INCHES LONG BY 5/8 INCH IN DIAMETER
DRILLED AND BEVELED
SSC38 WORM GEAR CLAMP, S/S (.25-.63)
SST12HB38 STAINLESS TEE COMBO 1/2in FPT X 3/8 in BARB WITH
SSST AND S.S. MESH
SS-MESH STAINLESS STEEL MESH WITH SSST FOR REPLACEMENT
SSST SCREEN DISC .687 DIA. 10 X 10 MESH @ .020 DIA.
SSP12 STAINLESS STEEL AXLE PLATE - 2.5 inch X 1 inch - 2 HOLE
ST80200 VEEJET NOZZLE, 80200
STR38-IL IN LINE STRAINER 3/8 BARB 20 MESH 304 SS EDPM GSKT
TANK-25N 25 GALLON PORTABLE UNIT NATURAL IN COLOR
TW916 1/2 INT TOOTH L/W 410SS
W15 NONMARKING WHEEL FOR PORTABLE UNITS
W387 S.S. 304 SPRAY WAND 3/8in MPT X 7in LONG - THREAD
ON ONE END
WS-20CFM TSUNAMI WATER SEPARATOR 20 CFM