Fans & Heaters technical seminar Axial Fans Anders Pommergaard

Agenda Introduction Aftermarket services Maintenance Key points Questions

Anders Pommergaard Field Service Manager, Howden Axial Fans

Aftermarket services

Aftermarket services Spare Parts & Remote Services Original Howden spares Refurbished parts Replacement parts Inventory management On-site Services Installation & erection On-site inspections On-site refurbishments On-site repairs Balancing Training 24 hour hotline service Retrofit Services Improved availability and reliability Extended service intervals Reduced maintenance costs Efficiency gains Increased performance Improved safety Extended life time Workshop Services Inspections Refurbishments Repairs Balancing Quality control Testing

On-site services On-Site Services Regular inspection and maintenance Preventive maintenance and advice System diagnosis Upgrades and performance optimization Troubleshooting On-site balancing and testing Medium & long-term downtime management Support in the event of unplanned downtime 24 h Hotline support Training

Spare part services Spare parts Reg. assessments & planning service needs Predictive and preventive maintenance Supply of original spare parts Reconditioning and replacement of spares Reverses Engineering Upgrades availability, reliability, efficiency and performance Engineering expertise and market-leading technology Constant product improvement and development Lifetime service relationship from the day of commissioning Execution of regular assessments of your service needs Preventive maintenance programmes Training of your own personnel We support and supply spares for our installed base of more than 3.000 fans Global network for transport and delivery

Workshop Workshop services Complete Rotor Inspection (Hub & MBA) Complete Rotor Refurbishment (Hub & MBA) Impeller Refurbishment Impeller Corrosion Repair Impeller Balancing New Impeller Fabrication MBA Refurbishment Complete Hydraulic Cylinder Refurbishment Hydraulic Cylinder Functional Test Hydraulic Cylinder Full run test New Hydraulic Cylinder Fabrication Blade Fabrication Main Shaft Fabrication Mix Spares Fabrication Rebuild Quotation from Teardown & Inspection

Maintenance

Maintenance plan General recommendations Part Task 8.000 hours Min. every year 16.000 hours Min. every 2 years 32.000 hours Min. every 4 years 64.000 hours Min. every 8 years Note Impeller Blade Inspection and replace if required Depends on dust load and ‘stall history’ of blades and corrosion Blade bearings Replace Blade bearing oil (VARIAX) Check oil level Replace oil NB! Blade bearing oil: (VARIAX) Bushings inspection and replace if required Slide shoes B-hub (VARIAX) Turn slide shoes 90º or replace Control studs (PF) O-rings Tightening tubes(VARIAX) Rotating oil seal Replace if not replaced at regular inspections Hydraulic cylinder Replace if not replaced at inspections Depends of flue gas have entered inner tube

Maintenance plan General recommendations Part Task 8.000 hours Min. every year 16.000 hours Min. every 2 years 32.000 hours Min. every 4 years 64.000 hours Min. every 8 years Note Bearing assembly Main bearings Replace Gaskets in bearing assembly Pressure springs at thrust bearing Regulating drive Bearings and internal parts Inspection and replace if required Replace grease in bearing house Replace bearings Various parts Foundation bolts Tighten up Stall probe arrangement Inspection and function test Actuator Inspection Flexible connections Depends on dust load Internal oil hoses for hydraulic cylinder Replace if not replaced at regular inspections Coupling

Maintenance plan General recommendations Part Task 8.000 hours Min. every year 16.000 hours Min. every 2 years 32.000 hours Min. every 4 years 64.000 hours Min. every 8 years Note Seal air unit Seal air fan Inspection Heating elements at impeller and seal air system Air filter Replace Hydraulic cabinet Hydraulic oil Alternative: Oil analysis Filter filling / breather plug Oil filter Continuous monitoring Air filter for cooling fan Depends on cooling system Lubrication cabinet Lubrication oil Brake Brake pads Inspection and replace if required

Regular maintenance ensures optimum performance Regular inspection and service of the equipment is required for optimum performance Stall probes Vibrations Correct lubrication Change of filters Dampers Instrumentation Alignment Installation according to specification Control DCS

Importance of maintenance Worst case scenarios Lead times and down time

Provides safe, fast and controlled rotation of rotor Turning gear Safety Solution to safety issues with personnel manually rotating complete fan/motor rotor Provides safe, fast and controlled rotation of rotor Eliminates confined entry procedures for slow controlled fan rotation Can be used during maintenance outages Run-down brake

Long term service agreements: Key points Keeping the maintenance plan saves time and money and improves fan performance. A Howden service training seminar upgrades your personnel’s skills enabling them to perform maintenance on a daily basis. Long term service agreements: Relieves you of the service responsibility Provides optimum fan performance Ensures availability and reliability of Howden equipment