Little Giant 5-md-sc Insctruction Manual Download

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INTRODUCTION

This instruction sheet provides you with the information required
to safely own and operate your product. Retain these instructions
for future reference.
The product you have purchased is of the highest quality
workmanship and material, and has been engineered to give you
long and reliable service. This product has been carefully tested,
inspected, and packaged to ensure safe delivery and operation.
Please examine your item(s) carefully to ensure that no damage
occurred during shipment. If damage has occurred, please
contact the place of purchase. They will assist you in replacement
or repair, if required.
READ THESE INSTRUCTIONS CAREFULLY BEFORE
ATTEMPTING TO INSTALL, OPERATE, OR SERVICE
YOUR PRODUCT. KNOW THE PRODUCT’S APPLICATION,
LIMITATIONS, AND POTENTIAL HAZARDS. PROTECT
YOURSELF AND OTHERS BY OBSERVING ALL SAFETY
INFORMATION. FAILURE TO COMPLY WITH THESE
INSTRUCTIONS COULD RESULT IN PERSONAL INJURY
AND/OR PROPERTY DAMAGE!

SAFETY GUIDELINES

1. Make certain that the unit is disconnected from the power

source before attempting to service or remove any
component.

2. Do not use to pump flammable or explosive fluids such as

gasoline, fuel oil, kerosene, etc. Do not use in explosive
atmospheres. Pump should only be used with liquids
compatible with pump component materials.

3. Do not handle pump with wet hands or when standing on a

wet or damp surface or in water.

4. This pump is supplied with a grounding conductor and/or

grounding type attachment plug. To reduce the risk of electric
shock, be certain that it is connected to a properly grounded
grounding type receptacle.

5. In any installation where property damage and/or personal

injury might result from an inoperative or leaking pump due to
power outages, discharge line blockage, or any other reason,
a backup system(s) and/or alarm should be used.

6. Support pump and piping when assembling and when

installed. Failure to do so may cause piping to break, pump to
fall, motor failures, etc.

ELECTRICAL CONNECTIONS

1. Check the pump label for proper voltage required. Do not

connect to voltage other than that shown.

2. If pump is supplied with a 3-prong electrical plug, the third

prong is to ground the pump to prevent possible electrical
shock hazard. DO NOT REMOVE the third prong from the plug.
A separate branch circuit is recommended. Do not use an
extension cord. Do not cut plug from the cord. If the plug is cut
or the cord is shortened, then this action will void the warranty.

3. The National Electric Code requires that a ground fault circuit

interrupter (GFCI) be used in the branch circuit supplying
fountain pumps and other pond equipment. See your electrical
supplies dealer for this device.

4. To reduce the risk of electric shock, use only on portable self-

contained fountains no larger than five feet in any dimension.

CONSULT INSTRUCTION SHEET ILLUSTRATIONS FOR PROPER
ASSEMBLY AND DISASSEMBLY OF YOUR LITTLE GIANT PUMP.

PUMP CONSTRUCTION

The patented Little Giant magnetic drive pump design consists
of a cylindrical drive magnet attached to the motor shaft which
rotates around a chemical resistant plastic separator housing.
Inside this housing is a magnet completely encapsulated in
chemical resistant plastic, and fixed to the impeller. The impeller
assembly is free to rotate on a spindle that is supported at both
ends. The spindle is held captive and does not turn. Front and
rear thrust washers are utilized as wear bearings. The washers are
held captive and do not revolve. This prevents wear on the shaft.
With the magnetic coupling the motor drives the impeller. This
coupling eliminates the conventional shaft seal and its possibility
of leakage.
Two series are available. The HC series handles highly corrosive
chemicals at elevated temperatures because of the unique
materials used in its construction. The SC series handles semi-
corrosive fluids. Both series are available with various size pumps,
and are available in 115V or 230V, 50/60 Hz versions.
The HC models utilize a carbon bushing between the impeller and
spindle. The use of this carbon bushing will allow these pumps
(HC series) to run dry (without fluid) for up to eight hours at a time.
Do not allow the SC models to run dry. They do not have the
carbon bushing and heat build up caused by friction will damage
the parts when SC models are run dry.

PUMP MATERIALS

The plastic parts on SC series pumps are made of glass-filled
polypropylene. The plastic parts on the HC series pumps are
glass filled PPS. The spindle shaft which is stationary and the
captive thrust washers (front and rear) are alumina ceramic. The
O-ring seal is Nitrile for the SC series, and Fluoroelastomer (FKM)
for the HC series. The HC series utilizes a pure carbon bushing in
the impeller to enable the pump to run dry for periods up to eight
hours at a time.

INSTALLATION

Your Little Giant pump is delivered to you completely pre-assembled
and pretested from the factory. It is ready for immediate use. The
pump may be installed in any position. It may be mounted
vertically with the pump head down. Proper plumbing connections
should be made. See specification table to determine what size
intake and discharge your pump has. Use a thread sealer on all
pipe connections and hand tighten only. NOTE: On HC models a
roll of PTFE pipe seal tape is supplied. Do not use a wrench to
tighten the HC model connections. Excessive force may damage
the plastic part. Make sure the wing nuts are tight before operating
the pump.
Motor nameplates list all electrical data and wiring schematic.
Make sure the pump is connected to proper voltage before operating.
When wiring pumps with no plug, the green (or green/yellow) wire
is the ground. The other two wires are line (live).
Do not allow the SC models to run dry (without fluid). However,
because the HC models utilize a carbon bushing in the impeller
they may be allowed to run dry for periods up to eight hours at a