Zep
Instruction Manual

Page.2
W59901 Stand Alone Unit W60301 Pump Fed Unit
Installation Instructions
Premix Solution (40-80 PSI, Minimal 5 GPM) Water (40-80 PSI, Minimal 5 GPM)
Compressed Air (30-100 PSI, 7 SCFM), Clean and Dry Compressed Air (30-100 PSI, 7 SCFM), Clean and Dry
Electricity (15 A, 120 VAC) Electricity (15 A, 120 VAC)
W59901 Stand Alone Unit
(1) C 4 Foamer Unit
(1) 5 Feet ¾ Blue Discharge hose
(1) 6 Feet ¼” Clear Pick-Up Hose w/Strainer
(1) Metering Tip Kit
(2) Foam Nozzles Assemblies
W60301 Pump Fed Unit
1) C 4 Foamer Unit
(1) 5 Feet ¾ Blue Discharge hose
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(2) Foam Nozzles Assemblies
1.
Open the shipping box and check the contents. If you are missing any parts, please contact your ZEP representative .
2. Determine how many nozzles you will need to cover the doorway. Doors up to 5 feet wide require one nozzle; doors from 5 feet up to 10 feet wide require two nozzles.
3.
Construct a foam header around the door using ¾”PVC fittings and PVC pipe are not (included) for two nozzle system, build the header symmetrically to produce balanced flow and pressure between the nozzles.
4. Mount the C 4 unit on the wall near the door. Connect the discharge of the C 4 unit to the header with a short piece of the ¾” discharge hose barb adapters ( included) and the hose clamps (not included).
5. Connect the water supply (stand alone unit) or premixed solution supply (pump fed unit) and compressed air supply water to right side ½”NPT air lift side ¼” NPT.

Page 3
Air supply
Minimal 7 CFM
120 VAC
Ball Valve
Water supply
City pressure minimal 40 PSI Ideal.
60-70 PSI
C 4 Single Doorway Set Up
Air supply
Minimal 7 CFM
120 VAC
Ball Valve
Water supply
City pressure minimal 40 PSI.
Ideal 60-70 PSI
C 4 Double Doorway Set Up
Concentrate solution
Concentrate solution
Safety & Operational Precautions
• When connecting to a potable water supply follow all local codes for backflow prevention.
• For proper performance do NOT modify, substitute nozzle, hose diameter or length.
• Manufacturer assumes no liability for the use or misuse of this unit.
• Wear protective clothing, gloves and safety goggles when working with chemicals.
• Always direct the discharge away from people and electrical devices.
• Never leave inlet ball valves on when unit is not in use.
Follow the chemical manufacturer's safe handling instructions.
• NEVER mix chemicals without first consulting chemical manufacturer.

Page.4
3 GPM
Lt Brown
Orange
Lt Green
Purple
Lt Blue
Peach
Red
Blue
Gray
Brown
Black
Dk Green
Pink
Yellow
White
OZ/GAL
0.25
0.50
0.75
1.00
1.50
2.00
3.00
4.00
5.00
7.00
10.00
13.00
18.00
22.00
25.00
RATIO
512.0
256.0
170.7
128.0
85.3
64.0
42.7
32.0
25.6
18.3
12.8
9.8
7.1
5.8
5.1

Page. 5
NOTE; it is always best to determine the actual flow rate though flow the injector and base your Calculation on that result. It is also recommended that you confirm your metering tip choice with a pull test.
1. Thread the metering tip into the metering tip adapter on the sanitizer unit. Connect the ¼” pick up hose to the metering tip adapter and place the strainer into the product container.
2. Open the sanitizer unit and close the needle valve by turning the knob to the right until it stops.
3. With the OFF-CYCLE switch in the OFF position, press and hold the PRIME button until the ¼‘’ pick-up hose is full and the solution is flowing consistently though the foam nozzle(s).
4. Release the PRIME button.
5. Check the water pressure Gauge. The water pressure must be at least 40 PSI for the sanitizer unit to operate properly (50-60 PSI is ideal).
6. Using the air Pressure regulator and gauge, set the air pressure 10-15 PSI lower than the water pressure. For example, if the water pressure is 60 PSI, set the air pressure at 45 PSI.
7. Press and the PRIME button again until the solution is flowing consistently though the foam nozzle(s).
8. While pressing the PRIME button, adjust the foam quality by slowly increasing the air volume with the needle valve (DO NOT adjust the air pressure regulator).
9. Release the PRIME button and open the panel door to access the cycle timer.
10. Turn the outside knob (green) to the desired (off ) time. (The off) time scale is 10 minutes.
11. Turn the inside knob (red) to the desired (on) time. The (on) time scale is 10 seconds.
: The (off) time is set for 10 minutes; the (on) time is set for 7-8 seconds.
12. Close the panel door and turn the OFF-CYCLE switch to the CYCLE position. The C 4
Entry Foam Sanitizer will now operate automatically.
NOTE; The timer will always start with the off cycle when power is supplied.

Page. 6
1 2 3 4 5 6 7 8 9 10 11 12 13 14
Foam surges and/or sputters
Water flowing into container x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x
Unequal solution flow (2) nozzles x
1.
Chemical pick-up hose is not immersed in the chemical supply or chemical supply is depleted- Immerse the hose in the chemical or replenish the chemical supply.
2.
Air Pressure/volume is too high for available water pressure – Adjust the air regulator and/or needle valve.
3.
Water pressure is too low – At least 40 PSI is required, increase the water pressure if possible or decrease the air pressure/volume.
4.
Chemical-to-water ratio is too low – Correct the chemical-to-water ratio with a larger metering tip.
5.
Foam hose or pipe is the wrong size or too long – The hose or pipe must be ¾” I.D and no more than 50’ long. Replace it with the correct I.D and/or shorten to overall length.
6.
Inadequate air supply – Open the air inlet valve fully and check the needle valve.
7.
Wrong chemical is being used – Ensure that the chemical is recommended for the application.
8.
Use of a lubricator on the air supply may decrease foam quality – Use only clean, dry air.
9.
Pin hole/cut in the chemical pick-up hose – Replace the hose.
10. Chemical Strainer or metering tip is blocked – Clean or replace the strainer and/or metering tip.
11. Chemical check valve is not working – Clean or replace the check valve.
12. Needle valve or air pressure regulator has failed – Clean or replace the needle valve and/or regulator
13. Water scale or chemical build-up may have formed in the injector – Remove injector and soak in descaling acid.
14. Foam nozzle branches are not equal in length – Reinstall the hose or pipe so that each nozzle branch is approximately the same length.

Page.7
Replaceable Parts Breakdown
¼ NPT Air regulator
Part #W61601
1/8 NPT Air Gauge Part
# W61301
6
1/4 NPT Air Solenoid
Valve Part # W61101 NPT air
¼ NPT Check Valve Part #
W61501
¼ NPT needle Valve adjustment for foam
Quality Part # FM00332
8-Pin Relay Base Part
#CE00356
Water Gauge ¼ NPT
Part# W61201
Water Solenoid ½ NPT
120 Volt Part # W61401
Injector Body Part #
T43001
¼ NPT St Elbow Part #
CE00560
¼ NPT Check Valve Part
# W61501
Metering Tip Holder
Part # CE00532
¼ ID Pick up Hose Part #
S82401 by ft.
Cycle Timer Part #
W60901

Page. 8
W60101
W60901
W61801
W61901
W62001
W62201
10 Ft. Power Cord
Repeat Cycle Timer
Green Prime Switch
Green Indicator Light
Off-Cycle Switch
Foam Nozzles
W62501
FM00332
CE00536
W29301
W61401
W61101
Swivel Nozzle Holder
Needle Valve
½” NPT Wye Strainer
Metering Tip Kit
Water Solenoid ½” NPT 120 VAC
Air Solenoid ¼” NPT 120 VAC
All parts may be ordered by calling your local ZEP Rep or 877-I-BUY-ZEP (877-428-9937).