Electrical Preparation - Sullair LS-20S Operator's Manual And Parts List

Section 4
INSTALLATION
Figure 4-1 Service Air Piping (Typical Installation)
SHUT- -OFF VALVE
(GATE VALVE
RECOMMENDED)
AIR OUTLETS
(NEVER TAKE AIR
FROM BOTTOM OF
PIPE)
tion. A "Direction of Rotation" decal is located on the
top of the compressor/motor adaptor piece.

4.7 ELECTRICAL PREPARATION

Interior electrical wiring is performed at the factory.
Required customer wiring is minimal, but should be
done by a qualified electrician in compliance with ap-
plicable local electrical codes concerning isolation
switches, fuse disconnects, etc. Sullair provides a
wiring diagram for use by the installer.
A few electrical checks should be made to help as-
sure that the first start--up will be trouble free.
Lethal shock hazard inside.
Disconnect all power at source before opening or
servicing.
22
WATER LEG
DANGER
!
GATE
BY- -PASS VALVE
GATE VALVES
TRAP
1. Check incoming voltage. Be sure that the incom-
ing voltage is the same voltage that the compres-
sor was wired for. Verify that control transformer
primary is wired for correct line voltage.
2. Check starter and overload heater sizes (see
electrical parts in Parts Manual).
3. Check all electrical connections for tightness.
4. "DRY RUN" the electrical controls by disconnect-
ing the three (3) motor leads from the starter. En-
ergize the control circuits by pushing the
(START) "I" pad and check all protective devices
to be sure that they will de--energize the starter
coil when activated.
5. Reconnect the three (3) motor leads and jog the
motor for a direction of rotation check, as ex-
plained in S ec t ion 2.
SULLAIR
DRYER
6.