Norton DR520, Owner'S Manual

Page: 11 / 41

11
III. MAINTENANCE AND COMPONENT DESCRIPTION
The vacuum pump is used with the large vacuum hold down
base to secure the core drill on smooth evenly textured
surfaces. The
pump is powered
by a 115 volt, 4.2
amp, 60 hertz
electric motor. The
power cord of the
pump is plugged
into the
live
outlet
of the receptacle in
the switch box of
the core drill. The
switch box on the
drill allows the motor on the drilling unit to be turned
on and off without shutting down the vacuum pump
and breaking the seal between the drill base and the
work surface.
The required maintenance procedure for the vacuum pump is listed in the
"Parts List and
Operating and Maintenance Instructions"
pamphlet. Parts for the vacuum pump are
available from local distributors of Gast products. A listing of Gast distributors is available in
this drill manual and in the vacuum pump pamphlet.
B. Leveling Screws
The four leveling screws on the base should cleaned with a mild solvent
and lubricated with a lightweight machine oil each time the machine is
used. Allowing the slurry to accumulate on the threads may cause damage
to the threads in the base.
C. Carriage
The carriage or head assembly should be cleaned and lubed with a
lightweight machine oil each time the machine is put away. Allowing slurry
to build on the column and inside the carriage will prematurely wear the
pinion gear and gibs.
GAST VACUUM PUMP
OPTIONAL
COMBINATION BASE
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