Little Giant GP-M231 Manual

Franklin Electric
Oklahoma City, OK 73127
www.LittleGiantPump.com
CustomerService@lgpc.com
INTRODUCTION
EN
Little Giant Submersible GP-M231/GP-M201 Series Grinder Pumps are recom-
mended for use in basins or lift stations and suitable for pumping residential
sewage, effluent, wastewater and other non-explosive, non-corrosive liquids.
Little Giant Grinder pumps utilize a cutting mechanism located on the suction
side of the pump. The solids are cut into a slurry which pass directly through
the volute into the discharge line by an impeller.
Little Giant offers complete control panel systems for automatic operation
along with a complete line of alarms, basins, covers, and check valves. A
Little Giant Pump panel or capacitor and relay kit must be used for proper
operation.
Little Giant pumps are carefully packaged, 100% inspected and tested to
insure safe operation and delivery. When you receive your pump, examine
it carefully to determine that there are no broken or damaged parts which
may have occurred during shipment. If damage has occurred, make nota-
tion and notify the firm from which you purchased the pump. They will assist
you in replacement or repair, if required. Pump must be installed by
experienced professionals only, and in accordance with local plumbing
and electrical codes.
SPECIFICATIONS
Discharge Size: GP-M231/GP-M201 - 1-1/4" FNPT Vertical
Operating
Capabilities: 140°F (60°C)
Pump Housing: Cast iron with epoxy paint coating
Volute: Cast iron with epoxy paint coating
Impeller: Brass with pressure relief vanes
Motor: 3450 RPM with automatic high temperature protection
Hardware: 300 series stainless steel
Bearings: Upper and lower ball
Shaft Seal: Type 21 mechanical, spring loaded, rotating carbon
with Fluoroelastomer (FKM) bellows and ceramic sta-
tionary with Fluoroelastomer (FKM) O-ring
Power Cord: 14 AWG 4-conductor, copper, stranded
Cooling: The motor housing contains a dielectric oil to provide
cooling for the motor and to lubricate the bearings and
seals. These pumps are capable of operating with the
motor housing partially exposed for extended periods of
time, providing sufficient motor cooling and bearing
lubrication. However, for the best cooling and the lon-
gest motor life, the liquid level being pumped should
normally be above the top of the cast iron motor cover.
Cutters: 440C stainless steel, hardened to Rockwell C 55-60
SAFETY GUIDELINES
Read all instructions and Safety Guidelines thoroughly. Failure to follow
the guidelines and instruction could result in serious bodily injury and/or
property damage.
MODEL CATALOG
NO. NO. HP PH
GP-M231/ 520865/
2
GP-M201 520855
GP-M231
GP-M201
1 Phase
WARNING
PUMP PERFORMANCE AND SIZING CHART
VOLTS HZ AMPS
230/
1 60 13.9
208
WARNING: Risk of electric shock. This pump is supplied with a grounding
conductor. To reduce the risk of electric shock, be certain that it is con-
nected only to a properly grounded, grounding-type receptacle in the
control panel.
When a pump is in a basin, etc., do not touch motor housing, pipes or
water until unit is unplugged or shut off. If your Installation has water or
moisture present, do not touch wet area until all power has been turned
off. If shut-off box is not accessible, call the electric company to shut off
service to the house, or call the local fire department for instructions.
Failure to follow this warning can result in fatal electric shock.
The flexible jacketed cord assembly mounted to the pump must not be
modified in any way. Do not use the power cord for lifting the pump.
1. DO NOT USE TO PUMP FLAMMABLE OR EXPLOSIVE FLUIDS SUCH
AS GASOLINE, FUEL OIL, KEROSENE, ETC. FAILURE TO FOLLOW
THIS WARNING CAN RESULT IN PERSONAL INJURY AND OR
PROPERTY DAMAGE.
2. The pump motor is equipped with an internal thermal protector switch
that opens to stop the motor when exceeding normal operating tem-
peratures. This switch will reset itself and start the pump when cooled
to normal temperatures.
3. During normal operation the grinder pump is immersed in water. Also,
during rain storms, water may be present in the surrounding area of
the pump. Caution must be used to prevent bodily injury when work-
ing near the pump.
a. Electrical power must be disconnected prior to touching, servicing
or repairing the pump.
b. To minimize possible fatal electrical shock hazard, extreme care
should be used when changing fuses. Do not stand in water while
changing fuses or insert anything other than a fuse in the fuse
socket.
4. Do not run the pump in a dry basin. If the pump is run in a dry basin,
the surface temperature of the pump will rise to a high level. This high
level could cause skin burns if the pump is touched and will cause
serious damage to your pump.
5. Do not oil the motor. The pump housing is sealed. A high grade
dielectric oil devoid of water has been put into the motor housing at
the factory. Use of other oil could cause serious electric shock and/or
permanent damage to the pump.
6. Do not install in locations classified as hazardous in accordance with
the National Electric Code, ANSI/NFPA 70.
7. Do not place hands, feet or clothing near the cutter mechanism when
there is any possibility the pump is connected to a power source. This
pump contains a cutting mechanism with very sharp edges that can
cause severe bodily injury.
For automatic operation, pump must be wired into a control panel.
Installation instructions are included with all Little Giant control panels and
should be referred to for installation.
Pump will not run if wired directly into an electrical outlet. This pump
requires a Little Giant capacitor kit and or control panel, which contains the
appropriate start and run capacitors in conjunction with a relay for proper
operation. Refer to the instruction manual for capacitor kit or control panel
to obtain proper component values. If this pump is run with incorrect
capacitors or relay, there could be severe damage to the pump motor and
or control panel.
Pump must be installed in a suitable basin, which is at least 24" in diameter
and 36" deep, and vented in accordance with local plumbing codes.
It is recommended for best performance and satisfactory installation to
use a complete factory built basin package system. This system includes
optimum materials of construction for operation.
GPM @ HEAD
10' 20' 40' 60'
33 32 31 30
INSTALLATION
SHUT OFF
80' 100' 120' (FT)
25 20 10 130
POWER
CORD (FT)
15'
1