Single-Line Pre-mix Doorway Foam Unit

Service Manual DS-WL

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 proper protective clothing, [gloves], and [eye wear] may result in serious injury such as burns, rashes, eye, throat or lung damage and death. Always wear protective clothing, [gloves], and [eye wear] 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 Safety Data Sheet (SDS) associated with the chemical solution being used 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. 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 with a temperature 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.

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 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.

Performing any maintenance with the unit turned ON, plugged into an electrical power source or connected to the air supply may serious injury or death. Always ensure that the unit has been turned OFF, unplugged from the electrical power source, and disconnected from the air supply before conducting any maintenance.

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.

Service Guide

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

English (Original Instructions)

Scan this code for service manual

NOTICE

Servicing, or modification, of 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 pumps 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.

WARNING

Performing any maintenance with the unit turned ON, plugged into an electrical power source and connected to the air supply may serious injury or death. Always ensure that the unit has been turned OFF, unplugged from the electrical power source, and disconnected from the air supply before conducting any maintenance.

Servicing, or modification, of 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 and 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 (sold separately) before the unit.

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
  • #2 Phillips head screwdriver
  • #3 Phillips head screwdriver
  • Flat head screwdriver
  • Hose cutters
  • Thread seal tape
  • Knife

Troubleshooting Your Unit

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

IssueSolution
Air Regulator Bowl or Air Filter has debris such as water, oil, or rust particlesClean by unthreading the air regulator bowl from the air regulator.
Pump is cycling improperly due to lack of air pressureThe needle valve is open too far. Close and readjust the needle valve as described in the operation section.
Ensure proper foaming chemical is being used.
The solution backs up into the air regulator bowl.The check valve needs to be replaced.
Foam comes out wet, no matter where the needle valve is positionedCheck for proper air pressure on the air gauge. The air regulator is factory set at 50 psi (3.4 bar). Operating range is 40 to 80 psi (2.8 to 5.5 bar) with 3.5 to 8 CFM (99.1 to 226.5 l/min).
The check valve may need to be replaced.
The unit operates at a reduced pressureCheck 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 the unit off 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.

Control Box Assembly

DS-WL-CB:

Control box assembly for pre-mix doorway foam unit with 24VDC timer - Santoprene pump

Additional control box pump options:

  • DS-WLK-CB: Kalrez pump
  • DS-WLV-CB: Viton pump

Inside view

The diagram shows the inside of the control box with numbered components:

Item NumberDescription
1Wall mount screw - #14 x 1 1/4 in. - Stainless steel - hex head slotted
2Poly box foot - gray polypropylene
3Wall mount screw anchor - #14 x 1 1/4 in. - plastic - 5/16 in. drill size
4Screw - #10 x 3/4 in. - stainless steel flat head Phillips - hi-lo thread
5Poly box assembly - 16 in. x 13 in. x 8 in. - gray polypropylene - includes mounting hardware
6Pump with Santoprene seals - includes hose barbs, air fitting, and exhaust barb
6BPump with Kalrez seals
6CPump with Viton seals
7Timer assembly - repeat cycle - 24VDC - 5A resettable circuit protector - includes 120VAC NA power cord
8Toggle switch - body - single pole single throw - nickel-plated brass - 1/4 in. spade terminals - 1/2 in. mounting hole - 15/32-32 keyed threaded bushing
9Toggle switch - mounting boot - black silicone rubber - 15/32-32 integrated nut
103/8 in. id blue hose - hybrid TPE - available per ft.
11Check valve - 3/8 in. barbs- PVC body- Hastelloy spring - Teflon ball - white
121/4 in. id blue hose - hybrid TPE - available per ft.
13Hose barb - polypropylene - 1/2 in. MPT x 3/8 in. barb
14Needle valve - 1/4 in. NPT - includes black knob
15Regulator - air - 2x 1/4 in. FPT and 2x 1/8 in. FPT ports with bowl and filter - no gauge
16Air gauge - 1/8 in NPT - 0-100 PSI markings - dry model
17Quick fit - 1/2 MPT x 1/2 od tube-polypropylene
181/2 poly tee

Control Box Sub-assemblies

RGA-R25-WF-ACV-24VDC-RH:

Air regulator assembly for wall mounted foam units - includes air gauge, needle valve, 24VDC valve, air inlet valve, screw band clamp, and hose barb - for use on right hand side of box

The diagram shows the air regulator assembly with numbered components:

Item NumberDescription
13/8 in. id blue hose - hybrid TPE - available per ft.
2Screw band clamp - stainless steel - for 3/8 in. hose
3Hose barb - stainless steel - elbow - 1/4 in. MPT x 3/8 in. barb
41/4 in. hose barb - brass - for G57/P56 air fitting with o-ring
5Ear clamp - Oetiker - stainless steel for 1/4 in. hose
61/4 in. id blue hose - hybrid TPE - available per ft.
7Black knob for needle valve
8Needle valve - 1/4 in. NPT - includes black knob
9Stainless hex nipple 1/4 MPT x 1/4 MPT
10Stainless hose barb 1/8 MPT x 1/4 barb elbow
11Air gauge - 1/8 in. NPT - 100 PSI dry model
12Regulator - air - 2x 1/4 in. FPT and 2x 1/8 in. FPT ports with bowl and filter - no gauge
13Air control valve - MAC - 1/4 in. FPT in. - 2x 1/4 in. FPT out - aluminum body - 24VDC solenoid - normally closed - 18 in. 18 AWG flying leads
14Bulkhead adapter - stainless - 1/4 NPT x 1/4 NPSM
15Serrated flange nut - stainless - 1/2 in.
16Ball valve - brass - nickel plated - air inlet valve - 1/4 in. FPT x 1/4 in. FPT
17Hose barb - stainless steel - 1/4 in. MPT x 3/8 in. barb

Control Box Sub-assemblies

SCTNA-WL-HA38BL-8-NB:

Suction hose assembly - includes 8 ft. of 3/8 in. blue* weighted hose and foot valve - no hose barb

The diagram shows the suction hose assembly with numbered components:

Item NumberDescription
13/8 in. id blue* hose - hybrid TPE - available per ft.
2Suction hose weight - 15/16 in. id x 1 1/2 in. od x 3 1/4 in. long - PVC coated stainless
3Screw band clamp - stainless steel - for 3/8 in. hose
41/4 in. MPT x 3/8 in. hose barb - plastic
540 mesh suction line strainer 1/4 FNPT

* Additional colors available, see datasheet for options.

Nozzle Assembly

NZA-DS-SL:

Doorway foam nozzle assembly - single line - for one nozzle installation - includes mounting hardware, 25 ft. of tubing, and ST8070SS fan tip

The diagram shows the nozzle assembly with numbered components:

Item NumberDescription
11/2 in. od natural tube - polyethylene - available per ft.
2Quick fit - 1/2 MPT x 1/2 od tube - polypropylene
31/2 in. FNPT and 1/2 in. FNPT wand - black polypropylene - 10 in. long
4Mixing media - brown polyester - wad - medium porosity - 1 in. x 7/8 in x 3 in. tall
51/2 in. id 5/8 in. od clear hose - PVC - available per ft.
61/4 in. x 1/2 in. MPT stainless nipple
7Bracket - L-shaped mounting - for 1/4 NPT fittings - stainless steel
8Tooth lock washer for 1/4 in. NPT - stainless - 0.56 in. id x 0.96 in. od x 0.06 in. thk
9Spray tip - 80 degree - 7.0 GPM - stainless - 1/4 MPT
10Wall mount screw anchor - #14 x 1 1/4 in. - plastic - 5/16 in. drill size
11Wall mount screw - #14 x 1 1/4 in. - stainless steel - hex head slotted
12Stainless steel elbow 1/4 in FPT x 1/4 in. FPT
Models: DS-WL Single Line Pre Mix Doorway Foam Unit, DS-WL, Single Line Pre Mix Doorway Foam Unit, Pre Mix Doorway Foam Unit, Doorway Foam Unit

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