After the sale
Services, retrofit and spares
Most of what goes wrong with an industrial fan was predictable and is cheap to prevent. The works takes machines in for rebuild, re-blading and balance, surveys plants for retrofit, and holds consumables as part numbers rather than emergencies.
Scope
What we do on a machine we did not necessarily build
Condition survey
Vibration and bearing check, clearance measurement, casing and liner condition, shaft and hub inspection, and a written report with the recommended action and its cost.
Wheel rebuild and re-blading
Replace blading, repair the backplate, renew the ring, then dynamic balance to ISO 1940-1 G6.3 or G2.5 before the wheel goes back.
Hard-facing and wear protection
Weld-over hard-facing on blade tips and the inlet ring, bolted liners at the cutwater, and a written wear plan that says which parts to hold.
Balance correction
Field and shop balancing for machines that shake themselves to pieces. Correcting unbalance is the cheapest maintenance action available on a fan.
Performance check
A works or on-site test to IS 4894 practice when a plant suspects the fan no longer makes its duty. Frequently the system has changed and the fan has not.
Retrofit and capacity change
New wheel in an existing casing, speed change, motor upgrade, arrangement conversion, or a complete replacement built to reuse the foundation and ducting.
Spares
Consumables, priced as part numbers
Every machine we ship can be supplied with a wear-part list: blades, inlet ring, casing liner and cutwater plate, shaft seal packing, bearing sets and belt drives. Ordering them with the machine is cheaper than finding them at two in the morning, and the drawing we issue identifies each part by position.
- Blades and wheel assemblies
- Wear life first item; keep one spare wheel on continuous critical duty
- Inlet ring and cutwater
- Where the dust does its work; both are designed to be replaceable
- Shaft and bearings
- Replace as an assembly if the shaft shows fretting or runout
- Seals and packing
- Consumable on dust duty; buy in sets, not singles
- Drives
- Belts, pulleys and guards; a matched belt set, never a single replacement
How a service job runs
Survey first, price second, weld third
Send what you have
Nameplate photo, vibration reading if you take them, the failure symptom and the shutdown window available.
Survey or strip
On site, or the machine comes to the works. Clearances and wear are measured, not estimated.
Written scope and price
What will be replaced, what will be repaired, what is left alone and why. No surprises after the casing is open.
Execute and document
Work, balance, test, then a record with the measurements so the next inspection has a baseline.
Book a survey
Send the machine number, a photo of the nameplate and the symptom. We will tell you whether it needs a visit, a strip or a spare part.