25.
Place the bolts for fastening the gears.
26. Fasten plastic gears with 2 bolts (10 Nm).
27.
Do not tighten the steel gear yet.
28.
Rotate the motor pulley by hand 5-8 revolutions counter-clockwise (do not turn
clockwise, until fail-safe gears are fastened).
29.
When fastening bolts of fail safe gears are in vertical position place gear adjustment
tool on gears and fasten it (avoid clockwise rotation of belt).
30.
Tighten the steel gear with 2 bolts (10 Nm).
31.
Remove the gear adjustment tool
32.
Rotate the motor pulley counter clockwise by hand for three revolutions. Make sure
that the gears do not touch.
33.
If gears touch, repeat step 28-32.
34.
Clean all parts from dust with a soft brush or cloth if necessary.
35.
Install the below parts in reverse order.
▪
Belt enclosure
▪
Cooling fan
▪
Drive cover
▪
Pump enclosure
7.4 Blow Off Valve Cleaning
CAUTION:
Obey the safety regulations. Make sure that the main power source is disconnected
and all parts with electric supply are covered or closed. As there will be exposure to
the pumped substances, use appropriate PPE such as rubber gloves depending on
the substances that are present in the process.
Accessories required to clean the blow off valve:
▪
Spanner: 10 mm
▪
Lint free cloth for cleaning
25
300766038_002 - © Leybold
Maintenance
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