Maintenance
9.3 Corrective maintenance
1LA5/6/7/9, 1LG4/6, 1MA6/7, 1MB..1/2/3/4/5 - SH 63 ... 355
Operating Instructions, 06/2018, A5E44455710A
131
Explosion hazard due to overheating of the rolling bearings
If the rolling bearings are not regularly regreased, local overheating may be possible, and,
as a consequence, an explosion in an explosive atmosphere. This can result in death,
serious injury, or material damage.
• Regrease the rolling bearings regularly according to the lubrication plate.
• Implement bearing temperature monitoring if not yet in existence.
Mounting dimension "x" of V rings
71 4.5 ±0.6
80 ... 112 6 ±0.8
132 ... 160
7 ±1
180 ... 200 (1LA, 1MA)
180 ... 225 11 ±1
250 ... 355 13.5 ±1.2
Material damage can occur by forcefully removing the fan from the shaft.
Take care not to damage the snapping mechanisms on fans that are equipped with these.
● Correctly expose the breakout openings provided in the fan plate.
● Heat up the fans to a temperature of approximately 50° C around the area of the hub.
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