Alamo Schwarze SUPERVA C SUPER UPDRAFT, Руководство по эксплуатации продукта

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Section 4 - Service
60
SCHWARZE SUPER UPDRAFT
revised 04/19
MAINTENANCE
10. FAN HOUSING
The fan housing directs the flow of air from the fan to the sweeping head. To provide the maximum
performance from the fan, the fan housing and drive components should be checked for wear regularly. When
signs of wear occur on a component, replace it as soon as possible.
10.1 Fan Housing Check
When air is drawn from the hopper into the fan housing, a small amount of fine dust is also pulled into the fan
chamber. This fine dust wears the fan blades, fan housing liner and the heads of the fan housing liner bolts.
Over a period of time, the sandblasting effect of this dust will cause enough wear to these components that
they must be replaced. Failure to replace them is dangerous and can be very costly, since a worn fan blade can
break and damage the inside of the fan housing. Worn liner bolts may allow the fan housing liner to sag and
cause damage to the fan as well as to its shaft and bearings. A worn liner permits the abrasive effect of the
airstream to reach the walls of the fan housing, which is an expensive replacement item.
Inspection:
1. Raise the hopper and insert the safety props into position.
2. Remove the keys from the ignition and disconnect the battery cable to prevent the engine from accidentally
starting.
3. Remove the back plate.
4. Using a flashlight, inspect the fan blades, fan bushing, fan housing liner bolts and the fan housing liner for
wear.
5. If no excess wear or abnormal wear is evident, replace the back plate, remove safety props and reconnect
the battery cables.
10.2 Fan Housing Replacement
If a worn fan is causing reduced sweeping efficiency, it should be replaced promptly. The fan shaft bearings
have a life expectancy of roughly 2500 hours. When a fan replacement becomes necessary near the end of the
bearing’s life expectancy, the bearings should likewise be replaced. Replacing both components will eliminate
the need to perform two, identical labor operations, and avoid downtime in close succession.
Exceptions to fan/bearing replacement:
• If you sweep in extremely sandy conditions, or do not use the sweeper’s water system, you may have to
replace fans more often than bearings.
• If the proper bearing lubrication procedures aren’t followed, you may have to replace bearings more often
than fans. However, in most cases, we recommend that the fan and bearings be replaced at the same
time.
4.10 Fan Housing
Fan Housing Check
Fan Housing Replacement