Comprag D7510, Manual

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5.7 Checking suction valve
In order to access the intake valve, the air filter has to be removed in accordance with section
5.4.
Then open the air throttle by hand, ensuring that it has a smooth stroke and can be opened
fully. If the air throttle jams or doesn’t operate fully, then replace the valve with a new one.
5.8 Servicing bearings of electric motor
When the compressor is used, fresh viscous lubricant (formulated for rolling bears) should be
added to the
motor’s bearings. Lubricant should be added using a special syringe for viscous
lubricants through lubricators accommodated in the motor’s bearing caps. The volume of lu-
bricant added can be calculated using the formula:
D2
motor shaft
( mm ) х 0,005 = М
(lubricant mass)
( g ).
Do not over-lubricate the bearings beyond the standard level as all excess lubricant will be
squeezed out of the bearings into the motor when the motor is running.