15
All adjustments and checks are made with the machi-
ne disconnected from the power supply.
When starting and using the machine:
Check that the wheel, especially a new replacement
wheel, is in sound condition by allowing the machine
to run up to maximum speed and remain there for at
least 30 seconds before it is put into use. During this
check make sure that all personnel are standing clear
of the machine.
Allow the machine to run up to full speed before app-
lying the workpiece to be ground.
Feed the workpiece smoothly onto the grinding wheel
and avoid harsh intermittent pressure und »bumbing«
onto the wheel.
Always apply light but firm pressure, and allow the
wheel to rotate at the maximum possible speed.
Avoid excessive pressure as this will tend to decrease
the wheel speed and the amount of stock removal,
cause uneven wear on the grinding wheel, and overlo-
ad the motor.
Avoid grinding on the side face of the wheel.
Do not arrest the wheel by applying pressure to it at
the conclusion of the grinding operation. Always al-
low the machine to run down freely to rest.
The machine can be operating max. 30 min/hour.
Wheel care
Store spare grinding wheels flat on a firm surface
with a layer of compressible material between the
wheels and the storage surface. Similar material
should be placed between wheels when a number are
being stored.
As the grinding wheel is used it will wear. it is recom-
mended that the wheel is replaced whon the diameter
has been reduced approximatcly 25% below the origi-
nal size (e.g. 300 mm to 225 mm : 200 mm to 150
mm : 150 mm to 112 mm : and 12.5 mm to 94 mm).
Wear on the wheel can cause eccentricity leading to
machine vibration and »bouncing« of the workpiece.
Unless this condition is corrected it can result in furt-
her damage to the wheel and possible harm to the ro-
tor bearings. To obtain wheel balance and good effici-
ent grinding action the wheel must be redressed. A su-
itable wheel dressing tool is avaiable under the part
number 1168.
General
Always disconnect the machine from the power supp-
ly before making any adjustment to the wheels or any
other attachment. Check the supply cable and replace
any damaged length. Replacement cables must be of
the same current rating as that originally fitted.
The earth wire must always be connected an d main-
tained. Keep the area around the machine as clean as
possible.
Replace damaged tool rests and eyeshields. Failure to
do this can cause accidents.
Bearings should be regreased when a major overhaul
of the machine is carried out.
2 years guarantee
If within 2 years of purchase this machine supplied by
LUNA becomes defective due to faulty materials or
workmanships, we guarantee to repair or replace the
machine or the defective part or parts free of charge
provided that:
• The product is returned complete to one of our
Service Branches or Official Service agents.
• The product has not been misused or carelessly
handled and has in particular not been used in a
manner contrary to the operating instructions.
• Repairs have not been made or attempted by per-
sons other than our own Service Staff of the Staff of
our Official Service Agents.
• Documentary proof of purchase date is produced
when the goods arc handled in or sent for repair.
Summary of Contents for MB150-1
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