Bell & Gossett P76966E Booster Pumps 11/2HP - Manual (Page 4)

Remove the screws securing the conduit box cover (wiring
compartment) and lift off the cover. Attach the appropriate
size connector to the hole in the side of the conduit box.
I. SINGLE PHASE MOTORS
Single phase dual voltage motors can operate at low voltage
(115V) or high voltage (230V). Determine the voltage at which
you choose to operate your B&G pump. Locate the wiring dia-
gram inside the conduit box of the motor. Make the connec-
tions as per the diagram provided with the motor. Connect the
ground wire to the ground screw inside the conduit box.
NOTE: Single phase motors are protected with inherent
overheating devices and do not require external overload
protection.
II. THREE PHASE MOTORS
Three phase motors can operate at either low voltage (208-
230V) or at high voltage (460V). Determine the voltage you
choose to operate your B&G pump. Wiring instructions for
each option are listed below and are also found in the conduit
box cover or on the motor nameplate.
Replace the conduit box cover and screws.
OPERATIONAL INSTRUCTIONS
SYSTEM PREPARATION
Prior to pump start up, closed heating and cooling systems
should be flushed with clean water and drained. The system
should then be filled with clean water having a PH between 7
and 9.
LUBRICATION
Although all new B&G pumps are test run at the factory, they
must be lubricated thoroughly before being placed in opera-
tion. Bell & Gossett supplies a high quality lubricant specifically
for this purpose which can be purchased from any B&G
Representative (Part No. L23401). Proper lubrication proce-
dures are as follows:
1. PUMP BEARINGS: Fill the bearing frame according to
the oiling instructions decal. At the time of installation or
start of each heating season, add approximately 1 oz. of
B&G #20 weight non-detergent oil. A SAE 20 (non-deter-
gent) or 10W-30 oil may be substituted. More frequent
lubrication may be required under adverse conditions such
as high ambient temperatures.
2. MOTOR BEARINGS: Lubricate through the two motor oil
ports according to lubrication decal once every four
months (more often under adverse conditions). Use eight to
ten drops in each oil cup. Does not apply to PD38 & PD40
pumps. These models use permanently lubricated ball
bearing motors.
For non-Bell & Gossett Motors, lubrication should be in accor-
dance with the motor manufacturer's instructions on the
nameplate.
NOTE: Over-oiling can cause motor mount deterioration and
may cause spillage onto surrounding surfaces. Deteriorated
motor mounts will lead to misalignment and excessive coupler
wear.
4
WIRING INSTRUCTIONS
WARNING: ELECTRICAL SHOCK HAZARD
Disconnect and lockout the power before making
electrical connections. Failure to follow these instructions
could result in serious personal injury or death.
WARNING: ELECTRICAL SHOCK HAZARD
Be certain that all connections are secure and the
conduit box cover is closed before electrical power is con-
nected. Failure to follow these instructions could result in
serious personal injury, death and/or property damage.
HIGH VOLTAGE
LOW VOLTAGE
T1
T2
T3
T4
T7
T5
T8
T6
T9
T1
T7
T2
T8
T3
T9
T4
T5
T6
L1
L2
L3
L1
L2
L3
BALL BEARING
MOTORS
LOW VOLTAGE
5
4
1
6
HIGH VOLTAGE
5
4
1
6
BROWN
L2
L1
WHITE
BLACK
BROWN
WHITE
BLACK L2
L1
LOW VOLTAGE
1
2
4
5
6
HIGH VOLTAGE
1
2
4
5
6
L2
L1
RED
BROWN
BROWN
RED
WHITE
BLACK
WHITE
BLACK
L2
L1
SLEEVE BEARING MOTORS