1. Fans & Heaters technical seminar
Axial Fans
Anders Pommergaard

2. Agenda Introduction Aftermarket services Maintenance Key points
Questions

3. Anders Pommergaard
Field Service Manager, Howden Axial Fans

4. Aftermarket services

5. 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

6. 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

7. 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 fans
Global network for transport and delivery

8. 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

9. Maintenance

10. Maintenance plan General recommendations Part Task 8.000 hours
Min. every year
hours
Min. every 2 years
hours
Min. every 4 years
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

11. Maintenance plan General recommendations Part Task 8.000 hours
Min. every year
hours
Min. every 2 years
hours
Min. every 4 years
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

12. Maintenance plan General recommendations Part Task 8.000 hours
Min. every year
hours
Min. every 2 years
hours
Min. every 4 years
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

13. 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

14. Importance of maintenance
Worst case scenarios
Lead times and down time

15. 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

16. 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