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Servicing the Mazzei Ozone Injector 

The Mazzei pump introduces the air and ozone mixture into the water stream on flow 

and on demand. It also prevents the water from discharging into the air lines when the 

system is not operating.   

The AOWT-7 uses a #684 Mazzei. Several factors may cause the Mazzei to fail: 

  Debris stuck in ball check valve, blocking it from setting properly into place. 

  Wear on the seals for the ball valve. 

  Physical damage to the ball or spring changing the fit in the seal. 

  Debris stuck in inlet orifice of Mazzei preventing water from flowing through. 

This flow is required to create a vacuum. A loss of vacuum causes ozone 
generator overheating. Low pressure can allow water to seep past check-
valve. 

Mazzei Failure 

Water will leak back up the air lines when the system is not operational and kept under 

pressure (system is not running but water lines are still under regular pressure). 

There is the potential for water to damage electronics and components in ozone 

production. The water column allows for Mazzei failure and redirects the released 

water away from generator box to discharge to an atmospheric drain. 

NOTES: 

 

Mazzei failures are uncommon and can be fixed quickly. 

 

Refer to Mazzei troubleshooting and solutions in 

System Manual.

 

 

Keep system under pressure. 

 

Troubleshooting the Mazzei 

1.  Verify water level indicator on water column lowers upon system activation. 

a.  If there is no drop in water level (suction) proceed to step 2. 

b.  If there is a drop in water level then the Mazzei is not fully plugged. 

2.  If no suction is detected, turn system and ozone generators OFF. Disconnect the 

hose attached to the Mazzei.  

3.  Start the system with the ozone generators off.  Place your finger over the open port 

on the T connection. If it is working you will feel the suction on your finger. 

 

NOTE: If no suction is detected the problem may be a plugged inlet port. ONLY 
PERFORM MAZZEI REPLACEMENT MAINTENANCE IF AUTHORIZED BY 
ACLARUS  

 

 

 

 

 

Summary of Contents for AOWT-7

Page 1: ...ACLARUS OZONE WATER TREATMENT SYSTEM OPERATORS MANUAL Manual Version 1 3 0513 Model AOWT 7 Installation Troubleshooting Maintenance Guide...

Page 2: ...ual in full and contact Aclarus for any questions Contains information to install and maintain the system diagnostic information helpful hints to ensure you have continuous and trouble free operation...

Page 3: ...te and System Installation 21 Site Preparation 21 Plumbing the System 22 Filling the System 23 Filter Preparation Optional Media Bed Filters 24 Testing the System 25 Chapter Three System Maintenance 2...

Page 4: ...one Injector 40 Servicing and Replacing the Ozone Mixing Pump 41 Replacing the Pump 42 Servicing the Ozone Generator 43 Troubleshooting the Ozone Generator 44 Servicing System Transformers 45 Chapter...

Page 5: ...not responsible for damage to person or property due to misuse improper maintenance fluctuations in water quality Maintenance Duties NOTE Failure to comply with these instructions will damage your Acl...

Page 6: ...t responsible for damage to property or health from use of this system It s use is done so at the owners risk Servicing Information Should service be required during or after the warranty period or sh...

Page 7: ...m Premature fouling of the system is not covered by the warranty Always wash hands thoroughly with soap and water after performing any servicing procedures on the System ONLY OEM parts supplied by the...

Page 8: ...Package Component List NOTE Please verify all ordered components are included with delivery Main system Electrical Assembly Ozone Generator Power Supply Associated Enclosure and Electronics Documenta...

Page 9: ...9 System Components...

Page 10: ...10 NOTE System components and tank may not be exactly as shown...

Page 11: ...When Main Power Switch Is On And Flow Switch Activated System Will Operate Until Flow Switch Deactivated Periodic System Cycling Can Be Incorporated Based On System Operational Requirements Special Fe...

Page 12: ...Specifications Power Requirements 110 120 Vac 60 Hz 15 Amp Standard Optional 220 240 Vac 60 Hz 15 Amp Power Connections Standard 115 Vac 15 Amp And 220 Vac 15 Amp Male Plugs Electrical Certification...

Page 13: ...IC COMPONENTS Wiring Legend Diagram Quantity per System Part Description 1 2 10 plate ozone generator 2 1 High voltage coil 3 1 Cooling fan 4 1 ON OFF switch 5 2 15 amp ceramic slow blow fuse 6 1 Powe...

Page 14: ...ent supplied NOTE System is only built to connect components solely at specific locations 9 Plumb Aclarus system and other components into water supply These components may vary depending on your appl...

Page 15: ...outgoing valve on the Aclarus system to start the priming process to get ozone into the system before use Repeat 5 8 times for a total of at least 5 10 minutes of re circulation 23 To backwash filter...

Page 16: ...system to flush out any small particulates of media that might have come through Run for a few minutes Repeat with other taps in house 30 Replace aerators in fixtures taps 31 Aclarus system should st...

Page 17: ...st be filled the filters backwashed and samples taken to ensure water quality If line or pump pressure can exceed 65 psi 4 5 bar a pressure regulator is required The pressure regulator and bypass are...

Page 18: ...bon prior to discharge shown Inlet Outlet Drain A B C A Fill Water Column here by unscrewing top and adding water B Sight Line for Water Column Ensure it is always at halfway up sight line C Check Sil...

Page 19: ...rs Sediment then Activated Carbon Silica air dryer To ozone generator Gas Off Installed With Line to Drain Window Hose From Ozone to Mazzei Plumbing Assembly Flow Switch Connection TO OZONE HEAD Outle...

Page 20: ...use a backflow preventer check valve in line Installation Materials In addition to the system supplied by Aclarus the following materials are or may be required for installation Pressure regulator if...

Page 21: ...system before use and after system has not run for more than 1 day Prime by turning tap closest to the system is best 6 8 times on and off to turn system on circulate ozone before running water throug...

Page 22: ...the Activated Carbon after the ozone system 4 Plumb Aclarus system and other components into water supply See Components Layout Page 9 Components may vary depending on the application 5 Complete the f...

Page 23: ...m is full open part way and quickly close the ball valve controlling the outgoing water Open and close it 6 10 times to start ozone circulation prior to discharge NOTE system will run 20 60 seconds af...

Page 24: ...a backwash on each filter NOTES only backwash one filter at a time and wait for filter to complete cycle before initiating second filter backwash if required follow instructions that come with the fi...

Page 25: ...oper operation 4 Collect water samples See Water Sampling Instructions from the lab to be submitted to and submit samples to an accredited laboratory for analysis 5 Record all site specific informatio...

Page 26: ...stem monthly with thorough visual inspection Ensure there are no obvious leaks or problems with the systems operation Immediately report any major concerns Always prime the system after it has not run...

Page 27: ...ystem will stop drawing ozone into the water and instead will begin drawing the surrounding air into the water This will prevent the water from being properly treated and can eventually cause the ozon...

Page 28: ...steps 1 Replace the saturated column with the alternate column so that the system can continue functioning while the gel in the saturated column dries 2 Unscrew the cap at the top of the saturated co...

Page 29: ...Power Light Indicates power supply to the unit and ON OFF switch is on 3 Main Power Fuse 20 amp ceramic slow blow fuse and fuse body holder Push and turn to replace fuse 4 Ozone Power Light Indicates...

Page 30: ...with a 1 amp fast blow fuse Turn system power to ON and open a tap to activate system flow switch If both lights are lit system is functioning properly If Ozone Power light stays off refer to call a...

Page 31: ...the system by opening the downstream tap closest to the system Close tap after water flow out of the tap stops 3 Use the filter wrench provided with the cartridge filters to loosen the filter housing...

Page 32: ...a preservative which is not safe for consumption and must be thoroughly flushed away prior to supplying potable water through the filters Ensure the proper filter flush process is performed prior to...

Page 33: ...ition of the transformer s and generators c Look for obvious loose wires and repair as needed d Look for any discolouring or if there is a burning smell 2 Look at the water level in the Water Column i...

Page 34: ...tap spout Check if filters are clogged and need replacement Water tastes smells or appears different than normal NOTE DO NOT DRINK UNTIL CORRECTED Power to system is off generator is not working or f...

Page 35: ...e flow switch Excess air in water lines or fixture The float in the Gas Off Chamber may be stuck and the grey contact tank on system is full of air Gently tap on the tank and Gas Off Chamber until all...

Page 36: ...ttached to the Mazzei and check for suction on Mazzei where hose was removed system operating Main power light on front of Aclarus Control Panel is not on Aclarus system has become disconnected from t...

Page 37: ...ns on performing maintenance on the Mazzei and pump Unusual odour or smell of ozone around the system The line venting the gas off chamber is leaking or not vented properly 1 Make sure line is vented...

Page 38: ...20L or water to be drained 5 Slowly open the discharge valve at the discharge of the tank and ensure that the water volume in the gas off chamber disappears if applicable 6 Allow the system to drain...

Page 39: ...orrectly and must be replaced Replacing the flow switch 1 Screw flow switch into a spare unconnected 3 4 threaded PVC T connector not provided 2 Ensure there is clearance around the flow switch paddle...

Page 40: ...are still under regular pressure There is the potential for water to damage electronics and components in ozone production The water column allows for Mazzei failure and redirects the released water...

Page 41: ...g and ball back into Mazzei and replace grey seal Ensure ball is seated in seal properly 12 Replace Inlet cover and replace Mazzei into Aclarus system NOTE Ensure Mazzei flow indicator points in the r...

Page 42: ...replacement pump onto frame and bolt down 9 Reconnect the wires use diagram you made in step 4a to the electrical box on pump and replace cover 10 Plumb pump by tightening unions before and after pum...

Page 43: ...g Moisture in the generator can cause arcing which damages the generator No air draw through the system can cause generator to overheat Failure of the coil can cause improper energy delivery to genera...

Page 44: ...roperly If light does NOT turn on there may be a problem with the transformers and or ozone generators Complete the following NOTE Only Aclarus authorized personnel can perform this function Turn Acla...

Page 45: ...at less than 0 5 amp draw The increase supplies proper voltage to the corona discharge generator for ozone production There are several sources for transformer failure Over draw by ozone generator as...

Page 46: ...the equipment is delivered and continues for 24 months c Any repairs under this warranty must be conducted by an authorized Company service representative d Excluded from the warranty are problems du...

Page 47: ...47 Appendix Component Specification Sheets Pumps Specifications...

Page 48: ...48...

Page 49: ...49...

Page 50: ...50 Flow Switch Specifications...

Page 51: ...51...

Page 52: ...52 Mazzei Specifications...

Page 53: ...53 Gas Off 1 Specifications...

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