Franklin Electric Little Giant 1.5-MDQ-SC Operator's manual

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!
DESCRIPTION
This is a magnetically driven pump intended to provide water
movement through aquarium filtration systems. This pump is
installed external to the aquarium and filtration systems, and is
generally mounted below the aquarium in the cabinet that houses
the filtration systems. The pump head parts are made of glass
filled polypropylene. The spindle shaft and thrust washers are
ceramic. The impeller driven magnet is coated ceramagnet A
(barium ferrite) type ceramic. O-ring seals are nitrile. The motor is
thermally protected.
SAFETY GUIDELINES
DANGER: To avoid possible electric shock, special care should be
taken in the use of aquarium equipment. For each of the following
situations, do not attempt repairs yourself; return the pump to an
authorized service facility for service or discard the pump.
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.
Do not handle pump with wet hands or when standing on a wet or
damp surface, or in water.
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.
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.
Support pump and piping when assembling and when installed.
Failure to do so may cause piping to break, pump to fail, motor
bearing failures, etc.
Do not handle the pump with wet hands or when standing on a
wet or damp surface or in water.
If the pump falls into the water, DON’T reach for it! First unplug it
and then retrieve it. If electrical components of the pump get wet,
unplug the pump immediately (nonimmersible equipment only).
Carefully examine the pump after installation. It should not be
plugged in if there is water on parts not intended to be wet.
Do not operate the pump if it has a damaged power cord or
plug, if it is malfunctioning, or if it is dropped or damaged in any
manner.
To avoid the possibility of the pump plug or receptacle getting wet,
position aquarium stand and tank to one side of a wall mounted
receptacle to prevent water from dripping onto the receptacle
or plug. Create a drip loop (Figure 1) for each cord connecting
1
1.5-MDQ-SC
Figure 1
Franklin Electric Co., Inc.
P. O. Box 12010
Oklahoma City, OK 73157-2010
405.947.2511 • Fax: [phone]
www.LittleGiantPump.com
[email protected]

an aquarium pump to a receptacle. The drip loop is the part of
the cord below the level of the receptacle or the connector if an
extension cord is used, to prevent water traveling along the cord
and coming in contact with the receptacle. If the plug or receptacle
does get wet, DO NOT unplug the cord. Disconnect the fuse or
circuit breaker that supplies power to the pump, then unplug the
cord and examine the receptacle for the presence of water.
Close supervision is necessary when any pump is used by or near
children.
Always unplug the pump from the receptacle when not in use,
before putting on or taking off parts, and before cleaning. Never
yank cord to pull plug from receptacle. Grasp the plug and pull
to disconnect.
Do not use the pump for other than intended use.
Do not install or store the pump where it will be exposed to the
weather or to temperatures below freezing.
Make sure the pump is securely installed before operating it.
Read and observe all the important notices on the pump.
If an extension cord is necessary, a cord with a proper rating
should be used. A cord rating for less amperes or watts than the
pump rating may overheat. Care should be taken to arrange the
cord so that it will not be tripped over or pulled.
ELECTRICAL CONNECTIONS
Check the pump label for proper voltage required. Do not connect
to voltage other than that shown.
Ground the pump to minimize the possibility of electric shock.
This pump uses a power cord with an equipment-grounding
conductor and a grounding-type plug. The plug must be plugged
into an receptacle that is installed and grounded in accordance
with all appropriate codes and ordinances. This pump is for use
on a normal 120 volt circuit and has a grounding plug that looks
like the plug illustrated in Figure 2. This pump should not be used
with a three to two grounding adaptor.
AQUARIUM APPLICATIONS
When using this pump for aquarium filter applications, refer
to the instructions and owner’s manual supplied by the filter
manufacturer.
OPERATION
1. The pump is completely preassembled and pretested from the
factory.
2. Use a thread sealer on all pipe connections and hand-tighten
only.
3. The pump is not self priming. It must be operated with the
volute intake below the liquid level.
4. This pump is not submersible. Operate the pump only in the
in-line mode. DO NOT put the pump in liquid. Locate the pump
in a well-ventilated area and away from where accidental water
spillage would cause wetting of the pump.
5. The weight of the pump must be supported adequately.
DO NOT support the pump by the intake and discharge
connections alone.
6. Do not allow the pump to run dry (without liquid). Heat buildup
caused by friction will damage the pump parts when dry.
7. Do not attempt to restrict the intake side of these pumps.
Restricting the intake may cause damage to the pump head.
If you require reduced flow rates, then place a valve on the
discharge side of the pump or if flexible vinyl tubing is used, a
clamp can be used on the tubing to restrict the flow.
8. If the pump will be idle for a long period, follow the cleaning
instructions outlined in the next section. Do not let the pump
freeze in the wintertime. This may cause cracking or distortion
that may destroy the pump.
SERVICE INSTRUCTIONS
DISCONNECT THE PUMP FROM THE POWER SOURCE BEFORE
ATTEMPTING TO SERVICE OR REMOVE ANY COMPONENT!
1. Lubricate the motor sleeve bearings every six months with two
to three drops of SAE 20 weight non-detergent oil. The oil holes
are located on top at each end of the motor.
2. All wetted parts can be serviced by removing the 4 screws
(Figure 3, item 12) that hold the volute to the housing. The
pump head components can be replaced in the field if
necessary.
3. Lightly clean any corrosion or debris that may clog the
impeller.
4. If pump is tripping circuit breakers, a GFCI, or not operating
properly after cleaning, return it to Little Giant or an authorized
service center. DO NOT attempt repairs yourself.
2
Figure 2

3
Figure 3
ITEM PART NO. DESCRIPTION QTY
1 977467 Motor 1
2 189046 Mounting bracket 1
3 901434 Screw, machine, 8-32 x 3/8" 4
4 189023 Drive magnet 1
5 189047 Magnet housing 1
6 902443 Screw, tapping, 8-16 x 1/2" 4
7 924134 O-ring, nitrile 1
8 921077 Thrust washer 2
9 189010 Impeller 1
10 189042 Shaft, ceramic 1
11 189002 Volute 1
12 902443 Screw, tapping, 8-16 x 1/2" 4

4
Form 994100 - 09/24/2009
©2008 Franklin Electric Co., Inc.
Little Giant® is a registered trademark of Franklin Electric Co., Inc.
For parts or repair, please contact . . . . . . . . . . . . . . . . . . . . 1.888.572.9933
For technical assistance, please contact . . . . . . . . . . . . . . . 1.888.956.0000
www.LittleGiantPump.com
[email protected]
Your product is guaranteed to be in perfect condition when it
leaves our Factory. It is warranted against defective materials and
workmanship for a period of 12 months from date of purchase by
the user.
Any product that should fail for either of the above two reasons and
is still within the warranty period will be repaired or replaced at the
option of Little Giant Pump Company, Inc. dba Franklin Electric
Water Transfer Systems (hereafter “the Manufacturer”) as the sole
remedy of buyer. For our customers in the CONTINENTAL UNITED
STATES: Please return the defective unit, postage paid, to the
factory at 301 N. MacArthur, Oklahoma City, OK 73127-6616. All
defective product returned under warranty will be fully inspected to
determine the cause of failure before warranty is approved.
For our customers located elsewhere; it is not economical, due to
duties and freight, to return the product to the factory for inspection.
Please return the defective unit to any authorized distributor or
dealer with a brief written explanation of the problem. If there are no
apparent signs of customer abuse, unit will be repaired or replaced.
If dispute arises over replacement of the product, the distributor
or dealer is to segregate such items and hold for inspection by a
representative of the Manufacturer or notify factory with details of the
problem for factory disposition and settlement of warranty claim.
DISCLAIMER:
THE FOREGOING WARRANTY IS AN EXCLUSIVE WARRANTY
IN LIEU OF ANY OTHER EXPRESS WARRANTIES. ANY IMPLIED
WARRANTIES (INCLUDING, BUT NOT LIMITED TO ANY IMPLIED
WARRANTY OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE) TO THE EXTENT EITHER APPLIES TO A
PRODUCT SHALL BE LIMITED IN DURATION TO THE PERIODS OF
THE EXPRESS WARRANTIES GIVEN ABOVE.
Warranty will be VOID if any of the following conditions are found:
1. Sealed motor housing opened.
2. Product connected to voltage other than indicated on
nameplate.
3. Cord cut off to a length less than three feet.
4. Pump allowed to operate dry (fluid supply cut off).
5. Pump used to circulate anything other than fresh water, light
oils, or other mild liquids at approximately room temperature.
6. Product abuse by customer.
Any oral statements about the product made by the seller, the
manufacturer, the representatives or any other parties, do not
constitute warranties, shall not be relied upon by the user and are
not part of the contract for sale. Seller’s and manufacturer’s only
obligation, and buyer’s only remedy, shall be the replacement and/
or repair by the manufacturer of the product as described above.
NEITHER SELLER NOR THE MANUFACTURER SHALL BE LIABLE
FOR ANY INJURY, LOSS OR DAMAGE, DIRECT, INCIDENTAL OR
CONSEQUENTIAL (INCLUDING, BUT NOT LIMITED TO INCIDENTAL
OR CONSEQUENTIAL DAMAGES FOR LOST PROFITS, LOST
SALES, INJURY TO PERSON OR PROPERTY, OR ANY OTHER
INCIDENTAL OR CONSEQUENTIAL LOSS), ARISING OUT OF
THE USE OR THE INABILITY TO USE THE PRODUCT AND THE
USER AGREES THAT NO OTHER REMEDY SHALL BE AVAILABLE
TO IT. Before using, the user shall determine the suitability of the
product for the intended use, and user assumes all risk and liability
whatsoever in connection therewith.
Some states and countries do not allow limitations on how long an
implied warranty lasts or the exclusion or limitation of incidental or
consequential damages, so the above limitations or exclusions may
not apply to you. This warranty gives you specific legal rights, and
you may also have other rights which vary from state to state and
country to country.
The National Electric Code (in the USA) and similar codes in other
countries require a Ground Fault Circuit Interrupter (GFCI) to be
installed in the branch circuit supplying fountain equipment rated
above 15 volts. 115 volt GFCI’s (with various cord lengths) are in
stock, and we recommend each product be used with a GFCI.
LIMITED WARRANTY