Maintenance
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8-3
8.2
Maintenance schedule
Follow the maintenance schedule to obtain the functionality of the
system.
Daily (before casting)
Warning!
Burning hazard because of leaking molten metal.
The system must not be operated without a sealing rod for security
reasons.
The tip of the sealing rod must stay in the pouring opening even
when sealing rod is open.
Whit built-in and closed sealing rod the sealing rod-cylinder must not
be on the lower end position, otherwise the sealing of the pouring
hole is no longer guaranteed.
Check in case of an error necessarily the extent of sealing rod,
graphite ball, crucible and the crucible bottom insulation.
Remove thermocouple, crucible and insulating materials. Clean
inductor housing carefully with a vacuum cleaner. Before installing
check components and replace if necessary.
Clean the metal filter on the left of the sealing rod.
Figure 27: Filter crucible chamber
With using of compressed air wear a dust proof
mask and must not blow in the room.
Check and replace white filter for vacuum if necessary.
Weekly
Apply on the thread of the sealing rod high-temperature grease.
Check oil level at vacuum pump. Renew oil if necessary. Recom-
mended oil quality HD30/SAE30 (about 0.5 litre).
Every 4 months
Check the vacuum filter and the oil separator filter of the vacuum
pump. Check oil level. Check/clean air filter. Renew it.
