CFS Lafferty 976256-24V Installation instructions

Lafferty Equipment Manufacturing, LLC
Installation & Operation Instructions
Model # 976256-24V · Timed PF Entryway MV Foam Sanitizer - 24VAC
# 919050
# 919060SS
# 989304
# 989316
# 989106
# 989108
REQUIREMENTS
Ready-to-Use Chemical Solution
Temperature up to 160°F
Pressure 35 to 75 PSI
Flow 2.45 GPM @ 40 PSI
Supply Line 1/2"
Compressed Air up to 3 CFM
Hose 1" ID x 25'
Nozzle MV Entryway Spreader
Electric 24V
OPTIONS
Central Pump Systems (AODD)
Mini-Central Pump System (1/2" PP)
Central Pump System (1" SS)
Level Masters Provide an Automatic Supply
of Ready-to-Use Chemical
Level Master (Various Tank Sizes)
Gemini Level Master (Various Tank
Sizes)
High Flow Level Masters Provide an
Automatic Supply of Ready-to-Use Chemical
60/10 High Flow Level Master
60/20 High Flow Level Master
www.laffertyequipment.com
501-851-2820
OVERVIEW
The Timed PF Entryway MV Foam Sanitizer is an automated foam applicator for projecting sanitizing chemicals on to floors of 6' wide double doors to prevent cross
contamination. This system receives ready-to-use chemical from a user-supplied central chemical feed system. Rich, clinging foam is created by injecting compressed
air into the solution to greatly increase volume and coverage ability. Foam is then projected through the discharge hose and Spreader™ nozzle. The system timer is
user-programmable to meet the needs of any facility. This unit requires 24VAC electrical input - a locally sourced standard step-down transformer is required.
W AR N I N G ! R E A D A L L
I N S T R U C T I O N S B E F O R E
U S I N G E Q U I P M E N T !
Lafferty Equipment Manufacturing, LLC • 5614 Oak Grove Road • North Little Rock, Arkansas 72118

SAFETY & OPERATIONAL PRECAUTIONS
See Additional Safety Precautions included with the Electrical Control Box Installation Information
Always consider electrical shock hazard when working with and handling electrical equipment. If
uncertain, consult an Electrician. Electrical wiring should only be done by a qualified Electrician, per
Local and State Electrical Codes.
For proper performance do NOT modify, substitute nozzle, hose diameter or electrical control box.
Manufacturer assumes no liability for the use or misuse of this unit.
Wear protective clothing, gloves and eye wear when working with chemicals.
Always direct the discharge away from people and electrical devices.
Follow the chemical manufacturer's safe handling instructions.
NEVER mix chemicals without first consulting chemical manufacturer.
Disconnect electrical power to the control box prior to opening it.
TO INSTALL (REFER TO DIAGRAM ON NEXT PAGE)
Illustration on Page 1 shows overall system setup. Refer to companion instructions for control box upgrades.
1. Install foam enhancer to entryway foamer discharge. The arrow on the foam enhancer should point UP -
opposite the flow direction.
2. Mount the unit to a suitable surface near the entryway.
3. Connect the unit to the spreader nozzle using only the provided 10' hose, or extend the discharge using hose or
piping that matches the ID of the provided hose (hose ID is very important). Use as few elbows as possible.
Minimum length of the total hose/pipe between unit and nozzle is 10'.
4. Mount the spreader nozzle slot several inches off the ground (refer to Page 1 illustration for details)
5. Connect chemical solution supply - a solution check valve is recommended.
6. Connect compressed air to the unit.
TO OPERATE
TO TEST
1. This unit requires 24VAC electrical input - a customer supplied standard step-down transformer is required.
2. Connect the 24VAC output from the transformer to the electrical input to the control box.
3. Plug the transformer into the wall electrical outlet.
4. The unit has been tested and the timer is preset to run for 60 seconds to allow for final adjustments. (ON TIME
will activate first.) Open your chemical solution supply valve and your air supply valve, and then turn on the power
switch.
5. Final air adjustments will now have to be made.
6. Wait a few seconds and observe foam consistency.
Use the least amount of air needed to achieve good foam quality to prevent water pressure fluctuations
from affecting performance. Air pressure must be kept lower than water pressure.
To adjust foam consistency pull out on the air regulator knob, turn slightly clockwise for dryer foam and
counterclockwise for wetter foam. Wait a few seconds to see each adjustment.
Once desired foam consistency is achieved push lock the knob. You are ready to start.
TIMER ADJUSTMENT
1. CAUTION! UNPLUG THE POWER CORD! Then open control box and adjust the timer. The ON TIME dip
switches control how long the foam will be applied. The OFF TIME dip switches control how long the unit will stay
off between foam applications. Add up the seconds for each activated dip switch to arrive at the desired duration
of the ON cycle. Usually 8-10 seconds is sufficient to foam the floor (longer plumbing runs will require a longer
application cycle). Add up the minutes for each activated dip switch to arrive at the desired duration of the OFF
cycle. Set your OFF TIME to maintain the foam’s presence according to your flow (anywhere from 6 to 15
minutes).
2. Close control box and plug in the power cord. Turn on the power switch. The unit will now function according to
the timer settings. (ON TIME will activate first.)
Note: The unit will run 24 hours a day unless the power switch is manually turned off.
For extra foam at any time, press and hold the lower end (Momentary control) of the door switch. (See
Switch Settings, below.)
SWITCH SETTINGS
Automatic control – Top of switch is depressed. Green light glows.
OFF – Switch is in middle position; green light is off
Momentary control – Press bottom of switch. Unit is active only while switch is pressed. When released, the
switch returns to the OFF position.
UNIT FLOW RATES
PSI GPM
35 2.29
40 2.45
50 2.74
60 3.00
70 3.24
75 3.35
976256-24V • Timed PF Entryway MV Foam Sanitizer - 24VAC
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Troubleshooting Guide
Problem Possible Cause / Solution
Startup Maintenance
A) Foam surges.
B) Foam output too wet.
C) Foam output too dry.
D) Unit doesn't come on when switch is turned on.
E) Unit comes on and runs continuously.
F) Unit comes on but no solution through solenoid.
1, 2, 3, 4, 6, 7, 8, 9, 10, 11
2, 3, 4, 6, 7, 8, 9, 10, 11
1, 5
11, 12
11
12
13, 15, 16
13, 14, 15, 16
13, 14
15
Possible Cause / Solution
Startup Maintenance
1. Air pressure too high
Adjust air regulator slowly counterclockwise until output
stabilizes.
2. Air adjustment too low
Adjust air regulator very slowly clockwise.
3. Use of an oiler in the airline will cause poor foam quality
Use only clean, dry air.
4. Not enough chemical
Increase chemical concentration.
5. Too much chemical
Decrease chemical concentration.
6. Improper chemical
Ensure product is recommended for foaming and/or the
application.
7. Foam hose kinked or hose/plumbing too long or wrong size
(See REQUIREMENTS)
Straighten the hose.
8. Nozzle size too small (See REQUIREMENTS)
9. Chemical solution pressure too low or volume too low /
inlet piping too small
Increase solution pressure or volume (See
REQUIREMENTS).
10. No chemical solution to the unit
Ensure that the chemical solution supply is not shut off
to the unit.
11. Timer failed/Controller not set properly or malfunctioned
Replace timer. See Controller manual.
12. May have electrical problems
Have a qualified electrician check electrical connections.
Ensure circuit breaker (5 amp) has not been tripped at
control box.
13. Air regulator failed allowing too much air or not enough air
Clean or replace.
14. Air check valve or air solenoid clogged or failed
Clean or replace.
15. Chemical solution solenoid clogged or failed
Clean or replace.
16. Chemical build-up may have formed in the body, causing
poor or no chemical pick-up
Follow PREVENTIVE MAINTENANCE instructions
below, using water. In extreme cases, carefully remove
fittings and soak entire body in descaling acid.
PREVENTIVE MAINTENANCE: When the unit will be out of service for extended periods, run water through the system to flush the chemical and help
prevent chemical build-up.
976256-24V • Timed PF Entryway MV Foam Sanitizer - 24VAC
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