Service manual

EP-100 PUMP INSTALLATION, OPERATION AND SERVICE MANUAL
14
SECTION 6: MOTOR WIRING
All wiring must comply with current wiring regulations
and any local regulations which may apply. Always
switch off the supply and disconnect before servicing.
6.1 Impeller Roatation Direction
Prior to operation of the pump in the heating system,
operation and proper rotation of the impeller must be
verified. See impeller rotation direction arrow label on
the pump scroll for the correct rotation direction.
The motor must be wired for clockwise or
counterclockwise rotation.
IMPORTANT: Improper rotation of the impeller can
produce only half of the vacuum required for proper
system operation.
6.2 EP-100 Wiring
The EP-100 motor is wired for 1 Ø, 115 V, 60 Hz
operation. However, the motor can be rewired for
230 V operation by changing the motor connections
as indicated by the diagram on the motor connection
box cover.
Motor operation can be changed from
counterclockwise to clockwise as shown on Page 6,
Figure 2.
Wire the pressure switch per the CORAYVAC
®
or
VANTAGE
®
NP Installation, Operation and Service
Manual.
FIGURE 11: EP-100 Contactor Wiring Diagram
WARNING
Electrical Shock Hazard
Disconnect electrical power and gas supply before
servicing.
This appliance must be connected
to a properly grounded electrical source.
Failure to follow these instructions can result in
death or electrical shock.
Ground
Screw
O
r
a
n
g
e
B
l
a
c
k
Y
e
l
l
o
w
W
h
i
t
e
B
r
o
w
n
R
e
d
115V Power Supply
(Control Panel or Relay)
Y
e
l
l
o
w
/
B
l
a
c
k
Neutral (-)
Motor Junction Box
Hot (+)
Magnetek TENV Motor:
To reverse rotation, interchange
black and red leads.