CompAir 5211.2.IA, Operator'S Manual

Page: 58 / 62

CompAir UK Ltd PUBLICATION 98407/1050
Page 56
13.3 DIRECT DRIVE – APP011B
DIRECT DRIVE:
Ensure compressor and drive motor is correctly aligned as the flexible couplings are for vibration duties only
and not as non-alignment couplings. Note direct coupled sets with bell type housing (see below) are self
aligning.
DIRECT DRIVE CHECKING FOR FREE PLAY AND WEAR.
After the first 500 hours and every 2000 hours, more frequently on arduous duties such as more than 6
starts per hour on auto stop/start operation, check the following:-
Ensuring compressor is isolated from mains supply, remove inspection cover (1) from bell housing (3) to
expose drive components (5, 6 & 7), then by gripping the motor half coupling (5) firmly check for free
movement by rotating backwards and forwards. The amount of free movement should be minimal 0.5 to 1.0
mm, excessive movement i.e. 3 to 4 mm or more should be investigated and the rubber couplings (6)
replaced (complete set) as necessary.