MYERS SX50, Installation And Service Manual

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GENERAL
1. Most accidents can be avoided by using
COMMON SENSE.
2. Read the operation and maintenance
instructions manual supplied with the pump.
3. Do not wear loose clothing that can become
entangled in the impeller or other moving
parts.
4. This pump is designed to handle materials that
could cause illness or disease through direct
exposure. Wear adequate protective clothing
when working on the pump or piping.
ELECTRICAL
5. To reduce the risk of electrical shock, pump
must be properly grounded in accordance with
the National Electric Code and all applicable
state and local codes and ordinances.
6. To reduce risk of electrical shock, disconnect
the pump from the power source before
handling or servicing.
7. Any wiring to be done on pumps should be
done by a qualified electrician.
8. Never operate a pump with a power cord that
has frayed or brittle insulation.
9. Never let cords or plugs lie in water.
10. Never handle connected power cords with
wet hands.
PUMPS
11. Pump builds up heat and pressure during
operation; allow time for pump to cool before
handling or servicing.
12. Only qualified personnel should install,
operate or repair pump.
13. Keep clear of suction and discharge openings.
DO NOT insert fingers in pump with power
connected.
14. Do not pump hazardous material not
recommended for pump (flammable,
caustic, etc.).
15. Make sure lifting handles are securely
fastened each time before lifting.
16. Do not lift pump by the power cord.
17. Do not exceed manufacturer's
recommendation for maximum performance,
as this could cause the motor to overheat.
18. Secure the pump in its operating position so it
cannot tip over, fall or slide.
19. Keep hands and feet away from impeller when
power is connected.
20. Submersible sump pumps are not approved
for use in swimming pools, recreational water
installations, decorative fountains or any
installation where human contact with the
pumped fluid is common.
21. Do not operate pump without safety devices
in place.
22. For hazardous locations, use pumps that are
listed and classified for such locations.
IMPORTANT! Myers is not responsible for
losses, injury or death resulting from a failure
to observe these safety precautions, misuse or
abuse of pumps or equipment.
GENERAL INFORMATION
Pump Models: These instructions cover the
installation and service of the Myers SX50 and
SX50H series submersible sump pumps. The
motors are CSA listed for hazardous sewage
locations Class 1, Div. 1, Group D.
Motor HP & Voltages: The SX50/SX50H sump
pumps are offered in single and three phase.
Voltages will vary according to the application and
can be seen in the tables in this manual.
Electrical Controls: All of these pump models must
be used with a control panel. Myers built control
panels are designed to supply the correct electrical
controls, motor starting equipment and include
the circuitry for moisture and heat sensors. It is
recommended that a Myers built control panel be
used so that all warranties apply.
General Construction: The SX50/SX50H motor
construction is designed to meet CSA requirements
for Class 1, Group D sewage applications. These
models are approved and nameplated with a CSA
file number. A cross sectional view of the internal
workings of the pumps can be seen on pages 7 and
8. The motor chamber and seal chamber are filled
with a high dielectric type oil for improved lubrication
and heat transfer of the bearings and motor. Since
the bearings have been designed for 50,000 hours
of life, the oil should never require replacement
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WARNING! IMPORTANT SAFETY INSTRUCTIONS! READ CAREFULLY BEFORE
INSTALLATION. This manual contains important information for the safe use of this
product. Read this manual completely before using this product and refer to it often
for continued safe product use. DO NOT THROW AWAY OR LOSE THIS MANUAL.
Keep it in a safe place so that you may refer to it often.