FOAMit SP-20N Gallon Spray Unit

Specifications

• Model: SP-20N
• Capacity: 20 Gallons
• Maximum Incoming Air Pressure: 100 psi (6.9 bar)

Product Usage Instructions

• Read and understand all instructions before operating the unit. Failure to do so may result in personal injury or death.
• Always wear appropriate Personal Protective Equipment (PPE) as indicated in the Safety Data Sheet (SDS) when using or servicing the unit to prevent serious injuries.
• Chemical solutions may pose health risks if not handled properly. Always follow chemical safety precautions and handling instructions provided.
• Depressurize and clean the unit after each use to prevent unexpected releases of chemical solutions.
• Do not operate the unit if damaged or leaking to avoid exposure to chemical solutions.
• Avoid pointing the discharge wand at yourself, others, or unintended objects.
• Do not exceed the maximum incoming air pressure of 100 psi (6.9 bar) to prevent pressure buildup and potential explosions.
• Avoid using hydrocarbons or flammable products with the unit to prevent fire hazards.
• Flush the unit thoroughly with fresh water when switching between alkaline and acid solutions to prevent chemical reactions.

Maintenance

• Only use parts listed in the manual for servicing to ensure proper operation of the unit.
• Avoid using an air lubricator before the unit as it may lead to diminished performance and damage.
• Ensure air lines are filtered, clean, dry, and free of moisture to prevent damage to the pump. Consider installing an air dryer if needed.

FAQ

• Q: What should I do if the unit is damaged?
• A: Do not use the unit if it is damaged or leaking. Contact authorized service technicians for repairs.
• Q: How should I store the unit?
• A: Store the unit in a dry and secure location away from direct sunlight and extreme temperatures.
• Q: Can I use the unit with any type of chemical solution?
• A: No, always refer to the chemical manufacturer’s instructions and SDS before using any chemical solution with the unit.

Safety

WARNING

PEOPLE OR OBJECTS CAN BE HURT OR DAMAGED IF THIS UNIT IS NOT USED CORRECTLY!

• Failure to read all the instructions before operating the unit may result in personal injury or death from the improper use of the chemical solution. Anyone handling, operating, or using the unit must read and understand the instructions in the manual. The buyer assumes all responsibility for the safety and proper use of the instructions.
• Using or servicing the unit without appropriate personal protective equipment (PPE) may result in serious injuries such as burns, rashes, eye, throat, or lung damage, and death. Always wear PPE as indicated in the Safety Data Sheet (SDS) when using or servicing the unit. Protect eyes, skin, and lungs against drifting spray.
• Chemical solutions may pose a health risk and death if they contact the skin or eyes, and are inhaled or swallowed. Always read and follow all chemical safety precautions and handling instructions provided by the chemical manufacturer and the SDS associated with the chemical solution before using the unit.
• Pressure within the equipment may cause an unexpected release of the chemical solution and cause serious injuries such as burns, rashes, eye damage, throat or lung damage, and death.
• Always depressurize and clean the unit after each use. Release any remaining air pressure from the unit. Never leave the unit unattended while pressurized.
• Using the unit with fluid temperatures above 100°F (37.8°C) may result in scalding, burns, serious injury, or death. DO NOT use a solution above 100°F (37.8°C).
• Operating the unit when damaged or leaking may result in exposure to chemical solutions, serious injury, or death. Never use the unit if it is damaged or leaking.
• Never point the discharge wand at yourself, another person, or any object you do not want covered in chemicals.
• Using incoming air pressure exceeding 100 psi (6.9 bar) may result in pressure buildup, explosion, serious injury, or death. DO NOT exceed 100 psi (6.9 bar) incoming air pressure when operating the unit.
• Use of hydrocarbons and flammable products may result in explosions, fire, and serious injury or death.
• Never use hydrocarbons or flammable products with the unit.
• Mixing an alkaline with an acid may result in a chemical reaction. Overheating of the mixture may cause it to splatter caustic compounds or release hazardous fumes, gas, and vapors. Always flush the unit with fresh water thoroughly when switching from an alkaline to an acid or an acid to an alkaline.

NOTICE

• Servicing or modifying this unit with parts not listed in this manual may cause the unit to operate improperly. Do not use unauthorized parts when servicing the unit.
• Use of an air lubricator before the unit may result in diminished performance and damage to the unit. Do not use an air lubricator before the unit.
• Moisture in the airlines will damage the pump and diminish the pump’s life. The air must be filtered, clean, dry and free of moisture. If needed, install an air dryer before the unit.

PROTECT THE ENVIRONMENT

• Please dispose of packaging materials, old machine components, and hazardous fluids in an environmentally safe way according to local waste disposal regulations.

Service Guide

WARNING

Performing any maintenance with the unit pressurized and connected to the air supply may result in serious injury or death. Always ensure that the unit has been depressurized and disconnected from the air supply before conducting any maintenance. Servicing or modifying this unit with parts not listed in this manual may cause the unit to operate improperly. Do not use unauthorized parts when servicing the unit.

Maintaining Your Unit

To keep your unit operating properly, periodically perform the following maintenance procedures

• Inspect the pump for wear and leaks.
• Inspect all hoses for leaks or excessive wear.
• Make sure all hose clamps are in good condition and properly secured.
• Replace the filter located within the air regulator as needed. Clean by unthreading the air regulator bowl from the air regulator.
• Check the suction line and strainer for debris.
• Clean as needed.
• Drain your air compressor tank on a regular basis to help extend pump life. An air source with a high moisture content will accelerate pump wear.

Note: If your air source has a high moisture content, install a water separator to the air fitting on the backplate. for more details. (Back plate assembly

Servicing Your Unit

Most repairs on the unit can be performed with the following tools:

• Crescent wrench (2x)
• ⁷/16 in. (11 mm) open-ended wrench
• Flat head screwdriver
• Thread seal tape

• 2 Phillips head screwdriver

• 3 Phillips head screwdriver

• Hose cutters
• Knife

Troubleshooting Your Unit

If your unit is not operating properly, try using these troubleshooting tips:

The air regulator bowl or air filter has debris such as water, oil, or rust particles| •   Clean by unthreading the air regulator bowl from the air regulator.
The pump is cycling improperly| •   Ensure proper chemicals and concentration are being used.

•   Check to ensure discharge hose is uncoiled properly, and that there are no kinks that could obstruct fluid flow.

Air passes through the pump without cycling| •   The pump needs to be replaced.
The unit operates at a reduced pressure| •   Check the suction line and strainer for debris or damage. Clean or replace as needed. To prevent damage to the unit, the strainer must always be used.

•   Check the air compressor supplying the unit. If the pressure is less than 40 psi (2.8 bar), turn off the unit until the compressor can catch up.

•   If the air supply is 50 psi (3.4 bar) or above, check the air gauge, 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.

Tank Assembly

TNKA-20N-BK
20 gallon natural tank assembly – black lid – includes drain plug, wheels, suction valve, and backplate thumb nuts
LDA-7BK
Lid assembly – includes 7 in. black lid, lid flange, hinge pin, and mounting screws

Additional colors are available, see the datasheet for options.

TNKA-20N-BK
20 gallon natural tank assembly – black* lid – includes drain plug, wheels, suction valve, and backplate thumb nuts
BPTNA
Backplate thumb nut assembly – includes bolt, thumb nut, and tether

VLVA-BVPVC34
Suction valve assembly – includes 3/4 in. PVC valve, bushing, 3/4 in. hose barb elbow, and screw band clamp

WHLA-AXL15
10 in. wheel assembly – includes 15 in. axle, axle plate, bolts, washers, and cotter pins

– 2 holes

8| AXL15| Axle – stainless – 0.625 dia. x 15.45 in.
9| B142012-VS| ¼-20 x ½ in. bolt – stainless – truss head Phillips – Vibra-Seal
10| W10| Wheel – non-marking – 10 in.

11

| ****

FW58

| Flat washer for 5/8 in. od pipe or axle – stainless – 0.64 in. id x 1.2 in. od x 0.05 in. thk

Back Plate Assembly

PA-SP38
Plate assembly for portable spray and gel units with 3/8 in. hose – Santoprene pump
Additional plate assembly pump options

• PA-SP38K: Kalrez pump
• PA-SP38V: Viton pump

1

| ****

A P56

| Pump with Santoprene seals – includes hose barbs, air fitting, and exhaust barb
| ****

B P56K

| Pump with Kalrez seals – includes hose barbs, air fitting, and exhaust barb

C P56V

| Pump with Viton seals – includes hose barbs, air fitting, and exhaust barb

2

| ****

R25

| Air regulator – two ¼ in. FPT ports – two ⅛ in. FPT ports – includes filter and bowl
3| AG100| Air gauge – ⅛ in. NPT – 100 PSI dry model
4| H14BL-F| ¼ in. blue hose – hybrid TPE – available per ft.

5

| ****

FW12NPT

| Flat washer for 1/2 in. NPT – stainless – 0.88 in. id x 1.5 in od x

0.05 in. thk

6| HBFSS1238| Stainless steel hose barb 1/2 FPT x 3/8 barb
7| STR38-IL| In-line strainer – ⅜ barb – EPDM gasket – 20 mesh SS – black bowl
8| H38BL-F| ⅜ in. blue hose – hybrid TPE – available per ft.
9| SSC38| Stainless screw band clamp for

⅜ in. hose

PA-SP38
Plate assembly for portable spray and gel units with 3/8 in. hose – Santoprene pump
Additional plate assembly pump options

• PA-SP38K: Kalrez pump
• PA-SP38V: Viton pump

¼ NPSM

3| AP14| Air fitting ¼ MPT x plug – nickel-plated brass
4| FW12NPT| Flat washer for 1/2 in. NPT – stainless –

0.88 in. id x 1.5 in. od x 0.05 in. thk

5| HBSS1238| Stainless hose barb ½ MPT x 3/8 barb

Optional Components
WSA-20CFM
Water separator assembly – 20 CFM – ¼ in. FPT ports – includes air plug and union fittings

Back Plate Sub-assemblies

RGA-R25-PSP
Air regulator assembly for portable spray and gel units – includes air gauge, pump barb, hose, bulkhead fittings, and air plug

6

|

R25

| Air regulator – two ¼ in. FPT ports – two ⅛ in. FPT ports – includes filter and bowl
7| AG100| Air gauge – ⅛ in. NPT – 100 PSI dry model
8| SSA14BKH| Bulkhead adapter – stainless – ¼ NPT x ¼ NPSM
9| SSSFN12| Serrated flange nut – stainless – ½ in.
10| AP14| Air fitting ¼ MPT x plug – nickel-plated brass

Suction Assembly

SCTNA-PF
Suction assembly for portable spray and gel units – includes a suction valve, hose, in-line strainer, and pump hose barb – for Santoprene pump
Additional suction assembly options

• SCTNA-PFK: Portables with Kalrez pump
• SCTNA-PFV: Portables with Viton pump

black bowl
3| SSC38| Stainless screw band clamp for

⅜ in. hose

4| H38BL-F| ⅜ in. blue hose – hybrid TPE – available per ft.
5| HBSSEL1438| Stainless hose barb ¼ MPT x ⅜ barb elbow
6| HHPB3414| Hex head poly bushing ¾ MPT x ¼ FPT
7| BVPVC34MF| Ball valve – PVC – 3/4 NPT to 3/4 FNPT EPDM seal

Hose Assembly
HA38BL-30
Hose assembly – 30 ft. of 3/8 in. blue* hose – includes ferruled hose barb

Additional colors are available, see the datasheet for options.

Wand Assembly
PSGA384-ST
Poly spray gun assembly for 3/8 in. hose – includes 4 in. black poly wand, ST2520SS spray tip, hose barb, and screw band clamp

long

3

|

PSG12

| Poly spray gun with 2x 1/2 in. straight thread – gray handle with red clip – 316SS internal spring – includes 2x o-ring
4| HBSS1238| Stainless hose barb ½ MPT x 3/8 barb
5| SSC38| Stainless screw band clamp for 3/8 in. hose

READ ALL INSTRUCTIONS BEFORE USING OR SERVICING THIS UNIT. KEEP THIS MANUAL IN A LOCATION THAT IS READILY AVAILABLE TO USERS AND SERVICE TECHNICIANS.

Scan this code for the service manual

Documents / Resources

| FOAMit SP-20N Gallon Spray Unit [pdf] Instruction Manual
SP-20N Gallon Spray Unit, Gallon Spray Unit, Spray Unit, Unit
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