7
B1d.1
4/06
Supercedes 8/05
PACOPACO
PACOPACO
PACO
PUMPS
WARNING: In the interest of operator safety, the unit
must not be operated above the nameplate condi-
tions. Such operation could result in unit failure
causing injury to operating personnel. Consult in-
struction book for proper operation and maintenance
of the pump and its supporting components.
Make the following inspections before starting your
PACO Type KP Double Suction Centrifugal Split
Case Pump:
Make sure the suction and discharge piping has
been cleaned and flushed to remove dirt and debris
before operating pump.
Make sure all wiring connections to the motor (and
starting device) match the wiring diagram and pro-
duce proper rotation.
If the motor has been in storage for an extended
length of time, either before or after installation, refer
to motor instructions before starting.
Check the voltage, phase, and line circuit frequency
with the motor nameplate.
Turn rotating element by hand to make sure it ro-
tates freely.
Tighten plugs in gauge and drain taps. If the pump
is fitted with pressure gauges, keep gauge clocks
closed when not in use.
Recheck the motor to pump alignment per Coupling
Alignment, M, section
.
Check suction and discharge piping for leaks, and
make sure all flange bolts are securely tightened.
C. MOTOR ROTATION
CAUTION: Never check driver rotation unless pump
and driver couplings are disconnected and physically
separated. Failure to follow this instruction can re-
sult in serious damage to pump and driver if rotation
is wrong.
After the unit has been wired and checked to ensure that
all components in the system (disconnect device, mag-
netic starters, pilot devices and motors) are properly con-
nected, check motor rotation as follows:
• Make sure coupling is disconnected, then momen-
tarily energize the motors to insure that rotation is
correct as indicated by the arrow cast into
the pump casing. If rotation is incorrect, interchange
is complete; before starting pump!
II. INSTALLATION - ELECTRICAL
A. MOTORS - GENERAL
• All electrical installations should be accomplished by
qualified electrician. Disconnect and lock out the
electrical power source, before starting any
installation or service work.
• Read and match the starting and overload control
devices with motor nameplate information. Always
follow control manufacturer’s instructions for proper
installation and connection.
• Grease lubricated motors are fully lubricated at the
time of manufacture and do not require further lubri-
cation if prompt installation follows. If the motor has
been in storage for six months or longer, refer to
Motor Lubrication (page 8), and lubricate before start-
ing.
III.OPERATION
A. PRIMING
• The PACO Type KP Double Suction Centrifugal Split
Case Pump is not self-priming, and must be com-
pletely primed (filled with liquid) before starting.
• If the pump will operate with a positive suction
head, prime by opening the suction valve and allow-
ing liquid to enter the pump casing. Open the air
vent at the top of the upper pump casing and the top
of each suction dome, and make sure all air is forced
from the pump by liquid before closing.
• IMPORTANT: Rotate the shaft by hand while prim-
ing and venting to free entrapped air from the
impeller passageways.
• If the pump has suction lift, priming must be accom-
plished by other methods. The use of foot valves,
ejectors or vacuum pumps, or by manual filling of the
pump casing and suction line with liquid are possible
methods suggested for this purpose.
• CAUTION: Never run the pump dry in the hope
that it will prime itself! Serious damage to the shaft
seals, pump wear rings and shaft sleeves will result.
B. PRE-START CHECKLIST
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