Munro LP 3 HP, Owner'S Manual

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READ AND FOLLOW SAFETY
INSTRUCTIONS!
This is the safety alert symbol. When you see this
symbol on your pump or in this manual, look for one
of the following signal words and be alert to the potential for
personal injury.
warns about hazards that WILL cause serious
personal injury, death or major property damage if ignored.
warns about hazards that CAN cause serious
personal injury, death or major property damage if ignored.
warns about hazards that WILL or CAN cause
minor personal injury, or property damage if ignored.
The label NOTICE indicates special instructions which are
important but not related to hazards.
Carefully read and follow all safety instructions in this manual
and on pump.
MOTOR AND ELECTRICAL:
GENERAL SAFETY – ELECTRICAL
1. Follow all local electrical and safety codes, including the
National Electrical Code (NEC) and the Occupational Safety
and Health Act (OSHA).
2. Disconnect the main power before handling the unit for
ANY REASON.
3. Replace damaged or worn cords immediately.
4. Use extreme caution around an operating pump and
motor – it may be hot enough to cause serious burns.
5. Ground motor before connecting to power supply.
6. If unsure of electrical connection, call a licensed
electrician. High voltage can shock, burn, or cause death.
GENERAL OPERATION – ELECTRICAL
1. Refer to motor nameplate to verify that supply voltage and
motor wiring is the same.
2. Verify motor phase against supply power phase.
GENERAL SAFETY – MOTOR
1. Disconnect the main power before handling the unit for
ANY REASON.
2. An operating motor will run at a high temperature and
will be too hot to touch.
3. Keep pump motor ventilated to reduce damage due to heat.
4. Motor is not waterproof and should never be submersed into
any liquid.
5. Motor is designed to work with up to a 15-degree angle of
water impact. Do not allow water to spray directly onto
motor. External motor protection should be used to eliminate
environmental concerns.
6. To reduce the risk of electric shock, the motor must be
securely and adequately grounded. Refer to National
Electric Code (NEC Article 250 – Grounding) for additional
information.
7. When in doubt, call a licensed electrician. High voltage
can shock, burn, or cause death.
WIRING CONNECTION:
ROTATION
1. All Munro pumps run in a Counter-Clockwise (CCW) rotation
only. (When facing the pump’s suction tapping, all Munro
pump motors are pre-wired to run in a Counter-Clockwise
(CCW) rotation only. Rotation from the motor end
perspective is Clockwise (CW) and is marked as such on
the motor nameplate). Tampering with or reversing the
rotation will damage your pump and void the warranty.
BUMP ROTATION CHECK
1. All 3-phase motors should be “bumped” to check for proper
rotation.
2. Bumping a motor is a split-second application of power
to verify CCW rotation of shaft. See Rotation section above.
3. Improper rotation can cause catastrophic pump failure
and voids the warranty.
GENERAL WIRING INFORMATION
1. Refer to the connection diagram located on the nameplate
of the motor.
2. Grounding the motor can be achieved by securing the
motor to a metal raceway system. Alternately a separate
grounding wire connected to bare metal on the motor
frame, or to the green grounding screw located inside the
motor terminal box, or other suitable means is acceptable.
(Refer to NEC Article 250 – Grounding for specifics.)
3. Verify voltage and phase of power source with motor
nameplate before connecting to motor.
4. To change rotation, switch any two wires.
MOTOR PROTECTION
1. Fuses and circuit breakers are used as a safety device for
the wire circuit. They do NOT offer motor protection.
2. Consult local or national electric codes for proper fuse
protection based on the motor data located on the motor
nameplate.
T HERMAL OVERLOAD
1. All motors must be thermally protected – either within the
motor or externally.
2. The internal overload is usually automatic and resets itself
once the temperature has dropped to a safe point.
3. Overload helps protect the motor from burnout from
overload of low voltage, high voltage and other causes.
4. Frequent tripping of the overload indicates motor or power
problems. Immediate professional attention is
recommended.
5. NEVER examine, make wiring changes, or touch the
motor before disconnecting the electrical supply. Thermal
overload protectors automatically reset and can close the
electrical circuit without warning.
6. The overload should never be tampered with or
removed.
DANGER
Wire motor for correct voltage. See
“Motor & Electrical” section of this
manual and motor nameplate.
Ground motor before connecting to
power supply.
Meet National Electrical Code,
Canadian Electrical Code, and local
codes for all wiring.
Follow wiring instructions in this
manual when connecting motor to
power.
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