Mechanical Installation - Liberty Pumps Provore PRG100-E Serie Manual Del Usuario

2-4 DESIGN OF PUMP
 Liberty Provore Grinder pumps are designed to be operated continuously submerged underwater. The motor
and pump form a close coupled, watertight unit. The pump's motor is insulated against heat and moisture in
accordance with Class B 130°C (265°F) regulations.
 A thermal overload protector is imbedded in the motor windings of all single phase pumps. This is connected
in series and wired to shut down the pump if overheating occurs. The overload switch resets automatically
when the motor cools.
 The motor is protected against damage from water entry by a mechanical cartridge seal, consisting of two
silicon-carbide faces. If the mechanical seal becomes compromised, pollution of the pumped liquid could
occur due to turbine oil seeping into the volute cavity.
The impeller and volute are designed for efficient flow characteristics and clog-free operation. The hardened

cutters grind solids and fibrous matter into small particles that can be safely pumped through small diameter
piping.
2-5 PROVORE MODEL SPECIFICATIONS
TABLE 1: MODEL SPECIFICATIONS
Model
PRG102M-3E
3.

Mechanical Installation

 Sewage systems require an approved liquid tight sump or receiving tank with an air-tight cover. The tank or
cover shall be connected with vent piping that is sized as required by national and local plumbing codes or
ordinances.
Rotating parts hazard. When pump is energized, be
careful around pump base. Pump should be in a
basin or a safe distance from people and objects,
especially wires.
Energized pump may start without warning, for
example, when the pump cools after a thermal
overload. Never work on an energized pump.
Volts
HP Phase
50 Hz
1 230 1
All models, as designated in Table 1, require a separate
approved pump control device or panel for automatic operation.
Operation of these models will be according to the control selected.
Make sure the electrical specifications of the control selected properly
match the electrical specifications of the pump.
controls can cause the pump to not operate as designed, causing pump
damage and flooding.
Explosion and fire hazard. Do not install this pump
in locations classified as hazardous or in explosive
atmospheres as defined by any applicable national
electrical safety code.
©Copyright 2014 Liberty Pumps Inc. All rights reserved
Full Load FNPT
Amps Discharge
3.4 2"
Shut-off Winding
Head (m) Resistance (Ω)
12 4-5
Improperly set
6