Direction Of Rotation - Speedaire Cast Iron Serie Manual De Instrucciones

Speedaire Operating Instructions
Speedaire
Air Compressors
Installation(Continued)
Apply air pressure to the piping installa-
tion and make sure all joints are free
from leaks BEFORE underground lines
are covered. Before putting the compres-
sor into service, find and repair all leaks
E
in the piping, fittings and connections.
N
WIRING
G
All wiring and
L
electrical connec-
I
tions must be performed by a qualified
S
electrician. Installations must be in
H
accordance with local and national
codes.
Overheating, short
circuiting and fire
damage will result from inadequate
wiring.
Wiring must be installed in accordance
with National Electrical Code and local
codes and standards that have been set
up covering electrical apparatus and
wiring. These should be consulted and
local ordinances observed. Be certain that
adequate wire sizes are used, and that:
1. Service is of adequate ampere rating.
2. The supply line has the same electri-
cal characteristics (voltage, cycles
and phase) as the motor.
3. The line wire is the proper size and
that no other equipment is operated
from the same line. The chart gives
minimum recommended wire sizes for
compressor installations.
MINIMUM WIRE SIZE
USE 75°C COPPER WIRE
Single
Three Phase
Phase
HP 230V 208/230V 460/575V
5.0 8 AWG 12 AWG
7.5 8 AWG 10 AWG
10.0 N/A 8 AWG
15.0 N/A 6 AWG
25.0 N/A 3 AWG
Recommended wire sizes may be larger
than the minimum set up by local ordi-
nances. If so, the larger size wire should
be used to prevent excessive line voltage
®
Discharge
Tube
Check Valve
Tank
Pressure
Gauge
Isolation Pad
Figure 2 - Horizontal Unit Identification
drop. The additional wire cost is very
small compared with the cost of repair-
ing or replacing a motor electrically
"starved" by the use of supply wires
which are too small.
GROUNDING
Improperly grounded
electrical components
are shock hazards. Make
sure all the components
are properly grounded to prevent
death or serious injury.
This product must be grounded.
Grounding reduces the risk of electrical
shock by providing an escape wire for
the electric current if short circuit
occurs. This product must be installed
and operated with a power cord or
cable that has a grounding wire.
MOTOR HOOKUP AND STARTER
14 AWG
INSTALLATION
12 AWG
Branch circuit protection must be provid-
12 AWG
ed as specified in the United States
10 AWG
National Electrical Code, Chapter 2,
8 AWG
"Wiring Design and Protection." Article
210, using the applicable article "For
Motors and Motor Controllers," (Article
430, Table 430-1 52).
IMPORTANT: Overload protection is
required for all motors. Certain motors
Pump
Safety Valve Access
Drain cock
have this protection built-in. To deter-
mine if a motor has built-in overload
protection, refer to the frame size on
the motor nameplate.
Motors with frame size R56HZ, Y56Y or
L143T include built-in overload protec-
tion. No additional protection is
required. Use Figure 3 wiring diagram.
Motors with frame sizes 184T, 215T,
254T or 284T DO NOT have built-in over-
load protection. A magnetic starter is
required. Use Figure 4 wiring diagram.
To change to the alternate voltage
on three phase motors with 230/460
ratings:
1. Rewire motor per data plate on
motor or instruction sheet.
2. Check electric rating of magnetic
starter and replace thermal overload
elements or magnetic starter as
required. The voltage and amperage
ratings are listed on the motor
nameplate.

DIRECTION OF ROTATION

NOTE: Improper rotation will result in
reduced unit life.
The direction of rotation must be coun-
terclockwise (as shown by the arrow on
the flywheel) while facing the flywheel
4
Motor
Factory Mounted
Magnetic Starter
Pressure Switch
Tank Shut-off
Valve
Discharge Port