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MCH60 

Nuvair 

 

Page 12 

www.Nuvair.com 

 

21. Compressed air from this machine absolutely must not be used for food processing or breathing air 

without adequate downstream filters, purifiers and controls and periodic air quality testing. 

22. Always use an air pressure-regulating device at the point of use, and do not use air pressure greater 

than marked maximum pressure. 

23. Check hoses for weak or worn conditions before each use and make certain that all connections are 

secure. 

 

The user of any compressor or nitrox system manufactured by Nuvair is hereby warned that failure to follow 

the preceding Safety and Operation Precautions can result in injuries or equipment damage. However, Nuvair 

does not state as fact or does not mean to imply that the preceding list of Safety and Operation Precautions is 

all-inclusive, and further that the observance of this list will prevent all injuries or equipment damage. 

 

Compressor Layout 

 

Nuvair MCH60 

(shown without front cover)

 

Dual MCH30 Compressors 

Oil Drain 

 

Oil Fill 

Compressor  

Oil Level 

 

HP Air Intake 

Compressor A and B 

Stage Pressure Gauges 

Oil 

Pressure 

Gauges 

Fill Pressure 

Gauge 

Emergency 

Stop 

HMI 

Dashboard 

Multigas 

Analyzer 

HP Air Outlet 

Always Check Rotation 

at Startup 

Electrical Access 

PLC Relay Box 

(located behind 

cover panel) 

Oil Filter 

Summary of Contents for MCH60

Page 1: ...Operation Manual MCH60...

Page 2: ...MCH60 Nuvair Page 1 www Nuvair com Notes...

Page 3: ...MCH60 Nuvair Page 2 www Nuvair com Notes...

Page 4: ...ned within Nuvair however retains the right to modify its contents without notice Under Nuvair s system of continuous improvement certain components may be updated or changed as higher quality or more...

Page 5: ...pressor vs Lag Compressor 15 4 3 Compressor Unavailable 15 4 4 Global Alarms 15 4 5 Run Hours Screen 18 4 6 Nuvair Page 19 5 0 System Components 19 6 0 Compressor Specifications 20 6 1 Unpacking and I...

Page 6: ...the Machine for a Brief Period 33 15 2 Stopping the Machine for an Extended Period 33 15 3 Dismantling and Putting the Compressor Out of Service 33 15 4 Waste Disposal 33 15 5 Dismantling the compres...

Page 7: ...ation or maintenance information which is important but not hazard related 1 1 Required Operator Training This manual must be read carefully and in its entirety All compressor operators maintenance pe...

Page 8: ...on 4 You must have a detailed understanding of where and how the compressor is to be used 5 Before starting work make sure that safety devices are working properly and that their use is understood in...

Page 9: ...them Drain air from tanks before filling when tanks have not been used for an extended period Use the compressor in areas free from dust risk of explosion corrosion and fire Improper use could have s...

Page 10: ...ven partially the systems and equipment described in this instruction manual especially as safety guards and safety symbols are concerned It is also forbidden to carry out work in any way other than t...

Page 11: ...spect the filter element and check for any deposits If metal or carbon deposits are present locate the source before restarting the compressor 2 0 Safety Warnings Nuvair has taken extreme care in prov...

Page 12: ...any separate control lines if used before attempting to work or perform maintenance Tag Out or Lock Out all power sources 7 Do not attempt to remove any parts without first relieving the entire system...

Page 13: ...hereby warned that failure to follow the preceding Safety and Operation Precautions can result in injuries or equipment damage However Nuvair does not state as fact or does not mean to imply that the...

Page 14: ...ww Nuvair com Condensate Collection Container Attached to Auto Drains Drain Daily High Pressure Out Connection HP Filter Replacements NUV65677 Drying Filter 3 NUV65437 Breathing Air Filter 1 Auto Drai...

Page 15: ...Output PSI Setpoint This will open a digital keypad to input the desired shutdown pressure a Once you input your desired pressure on the digital keypad press the button to save it b The pressure will...

Page 16: ...int is reached the button color turns yellow and the system will either a sound an alarm and or b shut down the compressor Global Alarm definitions AIT_Shutdown_Alm Gas analyzer out of range The syste...

Page 17: ...iHiAlm The compressor first stage pressure is critically high The system shuts down immediately and sounds an alarm FourthStagePSI_HiAlm Compressor A alert The compressor fourth final stage pressure i...

Page 18: ...A alert After 250 hours of runtime compressor oil change is required Alarm sounds MaintenanceSD timer activates OilChangeRequired_B Compressor B alert After 250 hours of runtime compressor oil change...

Page 19: ...of runtime a 500 hour valve service is required Alarm sounds and activates maintenance shutdown MaintenanceSD_B timer activates ValveService2 Compressor A alert After 1000 hours of runtime a 1000 hour...

Page 20: ...buttons pictured below control which screens are visible on the Dashboard o OVERVIEW Changes display to Overview screen o GAUGES Changes display to Gauges screen o ALARMS A Changes display to Alarms...

Page 21: ...system damage and malfunction 6 1 Unpacking and Installation Please read all information supplied before physically installing the Compressor System Unpack the system and remove from the pallet Visua...

Page 22: ...that the level of lubricating oil is within acceptable limits i e between minimum and maximum on the oil level viewer Note that an excessive quantity of oil can leave deposits on the valves while too...

Page 23: ...s to reach the pressure switch set pressure switch off the compressor and contact Nuvair Fill Pressure This dial a pressure switch allows users to set the desired pressure at the high pressure out con...

Page 24: ...sure out connection while the machine is under pressure Should tanks show evident signs of internal or external corrosion do not refill them even if they have been tested Use only tested tanks as prov...

Page 25: ...al 11 3 Unscheduled Work Unscheduled work involves repairs and or replacement of the mechanical parts of one or more compressor components This work normally needs to be done after some years of use I...

Page 26: ...oling tubes dirty Incomplete valve closure causing overload of another stage Poor Ventilation Check direction of rotation Clean cooling tubes Contact technical support Contact technical support 11 6 C...

Page 27: ...orce All maintenance work must be carried out with the compressor OFF and the power supply lead unplugged from the main socket 11 7 Checking the Oil Level The compressor must be placed on a solid surf...

Page 28: ...ordance with Federal State and local regulations 11 8 Changing the Lubricating Oil and Filter The lubricating oil must be changed every 250 working hours or annually 1 Every time the lubricating oil i...

Page 29: ...nal bolts and screws except for specific cases indicated in the manual Pipe connections swivel nuts compression fittings should be finger tight plus an additional 1 2 turn 6 Bolt and 4 Bolt Torque Seq...

Page 30: ...replaced every 500 working hours of the compressor 12 1 Checking Transmission Belts To check for proper transmission belt tension g exert a pressure of approximately 22 lb 10 kg on the belt check the...

Page 31: ...000 cubic feet of air pumped If the compressor system is operated in high humidity and or high temperature filter elements must be changed more often See 13 2 for details on filter element life facto...

Page 32: ...mpressor runs in simplex single compressor or duplex dual compressor mode The active carbon filters are classified as special waste once the compressor has been used to make air They must be disposed...

Page 33: ...heck all system specifications provided in this manual when working on the compressor system the main breaker at the power source must be locked out in the off position 14 1 Amperage Load for System 1...

Page 34: ...Service Should you decide not to use the compressor or any of its parts any longer you must precede with its dismantling and putting it out of service These tasks must be carried out in compliance wit...

Page 35: ...mers continue to receive assistance after the purchase of a compressor To this end Nuvair has created a customer service network covering the entire country 17 2 Scheduled Maintenance The scheduled ma...

Page 36: ...ubricant Food Grade nitrox compatible Nuvair 455 1 gal 9406 Compressor Lubricant Industrial Grade Nuvair 751 1 gal 9403 High Pressure Air Filter Elements Drying Filter Cartridge 3 NUV65677 Breathing A...

Page 37: ...MCH60 Nuvair Page 36 www Nuvair com 19 0 Service Log Date Technician Name Service Performed...

Page 38: ...must contain 0 003 PPM oil vapor All breathing nitrox produced for diving must be purified to meet these same requirements except for oxygen content Nitrox oxygen content must measure within 1 O2 of...

Page 39: ...e considered expendable and are not covered under the terms of this policy This includes maintenance and consumable items listed as part of a suggested maintenance program included with system documen...

Page 40: ...ir This card is to establish registration for any necessary warranty work and as a means of communication that allows Nuvair to contact the user regarding this product The user must notify Nuvair of a...

Page 41: ...MCH60 Nuvair Page 40 www Nuvair com Notes...

Page 42: ...MCH60 Nuvair Page 41 www Nuvair com 22 0 PLC Wiring Schematics PLC wiring schematics on the following pages...

Page 43: ...MCH60 Nuvair Page 42 www Nuvair com Notes...

Page 44: ...MCH60 Nuvair Page 43 www Nuvair com Nuvair Phone 1 805 815 4044 Fax 1 805 486 0900 1600 Beacon Place Oxnard CA 93033 USA info Nuvair com www Nuvair com Rev 04 2021...

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