20 Gallon Transfer Unit
Operation Manual
TU-20N

TU-20N 20 Gallon Transfer Unit

READ ALL INSTRUCTIONS BEFORE USING OR SERVICING THIS UNIT. KEEP THIS MANUAL IN A LOCATION THAT IS READILY AVAILABLE TO USERS AND SERVICE TECHNICIANS.
(Original Instructions)
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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 or 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 safety and proper use in accordance with the instructions.
Using or servicing the unit without appropriate personal protective equipment (PPE) may result in serious injury 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, 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 injury 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 by opening the discharge ball valve. Never leave the unit unattended while pressurized.
Using the unit with fluid temperatures above 100°F (37.77°C) may result in scalding, burns, serious injury or death. DO NOT use a solution with a temperature above 100°F (37.77°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 chemical.
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 air lines will damage the pump and diminish the pump 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

Product Overview

Requirements

formulated for this type of application and compatible with unit materials and pump seals.
For more information on chemical compatibility, consult the manufacturer or SDS for your product or contact our customer service department.

Specifications

inside diameter
Discharge wand/tip type| 10 in. (25.4 cm) stainless steel wand with zero tip and ball valve 27 in. (68.7) stainless steel curved wand with zero tip and ball valves Polypropylene fill gun with 1/2 in. hose barb and Hastelloy spring
Flow rate*| 3.5 gal/min (13.2 l/min)
Pump seals| Santoprene, Viton, or Kalrez
Wheel type| Two 10 inch (25.4 cm) non-marking wheels

*Flow rates given are based on chemical with viscosity of water and factory air pressure settings.

Product Components

Get to know the transfer unit components that you will need to use, adjust or assemble.
Back plate assembly • Inside view![FOAMit TU-20N 20 Gallon Transfer Unit

• fig 1](https://manuals.plus/wp-content/uploads/2023/08/FOAMit-TU-20N-20 -Gallon-Transfer-Unit-fig-1.jpg)

  1. In-line strainer
  2. Quick-change pump
  3. Air regulator
  4. Air pressure gauge
  5. Back plate thumb nuts
  6. Suction line valve

Tank Assembly

Front view

7. Hinged lid
8. Solution tank
9. Drain plug
10. Discharge wand
11. Discharge ball valve
12. Discharge hose
13. Air fitting
14. Air inlet valve
15. Suction line valve
16. Poly fill gun
17. Curved wand

Using your unit

Operating Instructions

1. Verify drain plug is securely closed.

2. Following all instructions from chemical manufacturer, fill tank with pre-mixed or concentrated solution.

3. Verify suction line valve at base of the suction line is open, allowing fluid into the suction line.

4. With the air inlet valve and discharge ball valve in the closed position, plug an air line into the air fitting.

5. Open air inlet valve to allow air flow.
   NOTE: Transfer instructions will depend on configuration.

6. Polypropylene Fill Gun: a. Pull trigger handle on poly fill gun to begin transfer. Release trigger handle to stop.

7. Stainless Wand:
   b. Slowly open the discharge ball valve to begin.
   c. Close discharge ball valve to stop.

8. Curved Stainless Wand:
   d. Open top discharge ball valve and position wand.
   e. Slowly open bottom discharge ball valve to begin.
   f. Slowly close bottom discharge ball valve to stop.
   g. Close top discharge ball valve and remove wand.
   NOTE: Use caution when removing wand, there may be remaining solution inside that could spill.

9. Close the air inlet valve to stop air flow.
   After Use Instructions
   NOTE: For proper handling and disposal procedures refer to chemical SDS.

10. Solution should be removed from unit after each use. This can be done in two ways:
    a. Unthread drain plug from front of tank and drain solution into an approved location.
    b. Place discharge wand into approved container to transfer remaining solution. Activate unit until all solution has been flushed from the system.

11. After solution has been removed, disconnect air line.

12. Open discharge ball valve or pull trigger handle to relieve remaining pressure.

13. Close ball valve or release trigger handle after all pressure has been relieved. Store unit with discharge ball valve and air inlet valve closed.

14. Before using unit with another chemistry, thoroughly flush with water.

Maintenance

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.
Servicing Your Unit
To service your unit, refer to the service manual which includes:

• Troubleshooting procedures.
• Detailed parts breakdowns and illustrations.
• Part numbers of serviceable components and assemblies.

06061218

20 Gallon Transfer Unit
Service Manual
TU-20N

READ ALL INSTRUCTIONS BEFORE USING OR SERVICING THIS UNIT. KEEP THIS MANUAL IN A LOCATION THAT IS READILY AVAILABLE TO USERS AND SERVICE TECHNICIANS.
(Original Instructions)
Scan this code for service manual 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 or 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 safety and proper use in accordance with the instructions.
Using or servicing the unit without appropriate personal protective equipment (PPE) may result in serious injury 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, 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 injury 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 by opening the discharge ball valve. Never leave the unit unattended while pressurized.
Using the unit with fluid temperatures above 100°F (37.77°C) may result in scalding, burns, serious injury or death. DO NOT use a solution with a temperature above 100°F (37.77°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 chemical.
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 air lines will damage the pump and diminish the pump 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. See Page 8 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:

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.
Pump is cycling faster than normal| • Verify product is getting to the pump with these steps:
1.Make sure the tank has chemical solution in it.
2.Ensure the suction line valve is open completely
3.Inspect suction line and strainer for debris or damage.
• If these steps are confirmed, the pump may need to be replaced.
Pump is cycling slower than normal| • Verify there is no obstruction on the outlet side of system with these steps:
1.Inspect discharge hose assembly for build up.
2.Verify unit is supplied with proper air supply
• If these steps are confirmed, the pump may need to be replaced.
Air passes through the pump without cycling| • The pump needs to be replaced.
The unit operates at a reduced pressure| • Check 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-TU-BK:
20 gallon natural tank assembly for transfer units – 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 available, see datasheet for options.

TNKA-20N-TU-BK:
20 gallon natural tank assembly for transfer units – black* lid – includes drain plug, wheels, suction valve, and backplate thumb nuts
BPTNA:
Back plate thumb nut assembly – includes bolt, thumb nut, and tether

VLVA-PVCV34 -TU:
Suction valve assembly for transfer units – includes valve, bushing, and elbow

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 ⅝ in. pipe – stainless – 0.687 id x 1.5 od x 0.07 thk

Back Plate Assembly

PA-TU12:
Plate assembly for transfer units with 1/2 in. hose – Santoprene pump
Additional plate assembly pump options:
PA-TU12K: Kalrez pump
PA-TU12V: Viton pump

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| H12CL-CB| 1/2 in. id clear braid hose – PVC – available per ft.
6| STR12-IL| In-line strainer – 1/2 barb – EPDM gasket – 20 mesh SS – black bowl

PA- TU12:
Plate assembly for transfer units with 1/2 in. hose – Santoprene pump
Additional plate assembly pump options:
PA-TU12K: Kalrez pump
PA-TU12V: Viton pump

0.05 thk
7| HBSS1212| Stainless hose barb ½ MPT x 1/2 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-SP:
Air regulator assembly for spray and transfer units – includes air gauge, hose barb elbow, clamps, and bulkhead fittings

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

Suction Assembly

SCTNA-TU:
Suction assembly for transfer units – includes suction valve, hose, in-line strainer, and pump hose barb – for Santoprene pump
Additional suction assembly options:
SCTNA-TUK: Transfer units with Kalrez pump
SCTNA-TUV: Transfer units with Viton pump

Hose Assembly

HA12CL-15-CB:
Hose assembly – 15 ft. of 1/2 in. clearbraid hose – includes ferruled hose barb

AKSS12:
Stainless anti-kink spring for 1/2 in. hose

Wand Assembly Options

SSWA1210:
Stainless wand assembly for transfer units with 1/2 in. hose – 10 in. wand – includes ball valve, barb, and screw band clamp

one end only
2| BVSS12| ½ in. stainless ball valve – welded nut
3| HBSS1212| Stainless hose barb ½ MPT x 1/2 barb
4| SSC12| Stainless screw band clamp for 1/2 in. hose

PFGA-WH:
White polypropylene fill gun assembly for 1/2 in. hose – includes fill gun, barb, and screw band clamp

Hastelloy spring – Viton seals
6| SSC12| Stainless screw band clamp for 1/2 in. hose

CSSWA1227:
Curved stainless wand assembly for 1/2 in. hose – 27 in. wand – includes coupling, ball valve, barb, and screw band clamp

in. long
8| CP1234CF| Coupling – 1/2 in. NPT x 3/4 in. od compression fitting – stainless
9| BVSS12| ½ in. stainless ball valve – welded nut
10| HBSS1212| Stainless hose barb ½ MPT x 1/2 barb
11| SSC12| Stainless screw band clamp for 1/2 in. hose

Model: TU-20N
V20230814

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