Paco-Pumps PIP702B Series

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Overview

Function Description
Important Technical Specifications
Usage Features
Maintenance Features

This document is an installation, operation, and maintenance manual for PACO INSTANT PUMPS, specifically the PIP702B Submersible Effluent Pump.

Function Description

The PACO INSTANT PUMP PIP702B is a submersible effluent pump designed for pumping wastewater and non-explosive, non-corrosive liquids. It is intended for use in sumps or basins and is equipped with a wide-angle, PVC, mechanical level control with a piggy-back plug for automatic operation. The pump features a permanent split capacitor (PSC) motor with inherent overload protection.

Important Technical Specifications

Pump:

Discharge: 2" NPT, Female, Vertical
Liquid Temperature: 77°F (25°C) Continuous
Volute, Motor Housing, Seal Plate, Impeller Material: Cast Iron ASTM A-48, Class 30
Impeller Design: 10 vane, vortex, with pump out vanes on back side. Balanced, ISO G6.3.
Shaft Material: 420 Stainless Steel
O-Rings Material: Buna-N
Hardware Material: 300 Series Stainless Steel
Paint: Air dry enamel
Seal Design: Single Mechanical
Seal Material: Rotating Face - Carbon, Stationary Face - Ceramic, Elastomer - Buna-N
Cord Entry Hardware: 300 series stainless steel, pressure grommet for sealing and strain relief.

Motor:

Speed: 3450 RPM (Nominal)
Upper Bearing: Single Row, Ball, Oil Lubricated, Radial Load
Lower Bearing: Single Row, Ball, Oil Lubricated, Radial & Thrust Load
Motor Design: NEMA L Torque Curve, Oil Filled Squirrel Cage Induction
Insulation Class: B
Phase: Single Phase (Permanent Split Capacitor - PSC)
Level Control: Wide Angle, PVC, Mechanical, 20 Ft. (6m) Cord w/Piggy-Back Plug, Normally Open (N/O)

Model PIP702B Specifics:

HP: 0.5
Volt/PH: 115/1
Hz: 60
RPM (Nom): 3450
NEMA START CODE: H
Full Load Amps: 6.4
Cord Length: 20 ft. (6m)
Cord Size: 14/3
Cord Type: SJTOW
Winding Resistance (Main -- Start): 3.5 -- 43 (± 5%)
Performance Curve: Shows a maximum flow of approximately 50 GPM at 10 feet of head, and a maximum head of approximately 18 feet at 10 GPM.
Dimensions: Height 14.06 inches (357 mm), Discharge opening 9.63 inches (245 mm) from bottom, Base diameter 7.00 inches (178 mm).

Usage Features

Installation: The pump is self-contained and packaged ready for installation. Connections or adjustments are generally not necessary, apart from attaching discharge piping and plugging in the service cord.
Submergence: The pump must always be operated in a submerged condition. The minimum liquid level should be no less than 4.50 inches (114mm) above the pump bottom, and the recommended level should not drop below the top of the motor housing.
Discharge Piping: Should be as short as possible. A check valve in the discharge piping is recommended to prevent backflow and potential flooding or damage. A 1/4" diameter vent hole should be drilled in the discharge pipe to prevent air locking.
Liquid Level Controls: A typical installation involves mounting the wide-angle level control to the discharge piping. The level controls are factory set for a pumping differential of 9 inches (228.6mm). The float should be set to ensure the sump liquid level never drops below the top of the motor housing or a minimum level of 4.50 inches above the pump bottom.
Electrical Connections: The pump comes with a 3-wire cord and 3-prong grounded plug. It must be connected to a 3-wire grounded Ground Fault receptacle. Removal of the ground pin or use of an extension cord is not recommended. The white wire is a power-carrying conductor, not a neutral or ground lead.
Automatic/Manual Operation: For automatic operation, the float cord plugs into a GFI outlet, and the pump cord plugs into the float cord. For manual operation, the pump cord plugs directly into the GFI outlet.
Overload Protection: An automatic thermal overload protector is sealed in the oil-filled motor. It trips if the windings become too hot or the load current is too high, then automatically resets once the motor cools. It is crucial to determine and rectify the source of any overload condition.
Start-Up Operation: Before operating, verify that the voltage and phase match the pump's identification plate. Check motor rotation by observing the "kickback" (should be counter-clockwise). Perform a pump-down test by filling the basin and allowing the pump to operate through its cycle, recording the time needed to empty the system.

Maintenance Features

Lubrication: The motor is oil-filled and generally requires no lubrication or other maintenance under normal operation.
Oil Check: When the pump is removed from operation (at least every 12 months), the cooling oil in the motor housing must be visually checked for level and contamination. The oil should be clean, clear, and above all internal componentry.
Oil Testing: If oil appears low or contaminated, it can be drained into a clean container and tested with an oil tester (range to 30 kilovolts breakdown). Clean oil measures above 15 KV breakdown. Contaminated oil (below 15 KV) indicates a need to inspect for leaks at the shaft seal, cord inlet, square ring, and pipe plug.
Oil Replacement: Drain all old oil and dispose of it properly. Refill with 32 ounces (0.9 liters) of new cooling oil (refer to Table 1 for approved dielectric oil grades). An air space must remain in the top of the motor housing for air expansion; fill until the oil level from the top of the pipe plug boss is 3" ± 1/4" (76.2mm ± 6.35mm). WARNING: Do not overfill, as it can create excessive hydraulic pressure and destroy the pump.
Shaft Seal Service: Disconnect power, remove the motor assembly from the body, and clean the body and impeller. To remove the impeller, unscrew it while holding the shaft. To expose the shaft seal, disassemble the volute and impeller. Remove the rotating member from the shaft. Examine all seal parts for wear, chips, or scratches. Replace the entire shaft seal if damaged. Clean and oil seal cavities in the lower motor housing. Lightly oil the outer surface of the stationary member (do not use grease) and press it firmly into the lower motor housing using a seal pusher. Lightly oil the shaft, bullet, and inner surface of the bellows on the rotating member (do not use grease). Slide the rotating member over the bullet and onto the shaft until the lapped faces are together. Place the spring over the shaft and onto the rotating member, then slide the retaining ring over the shaft.
Impeller Installation: Inspect threads on the shaft and impeller for cleanliness. Apply thread-locking compound to the shaft threads and screw on the impeller, tightening it. Rotate the impeller to check for binding. Install the motor housing assembly on the pump body, apply thread-locking compound to cap screws, and torque to 11 ft. lbs. Check for free rotation of the impeller.
Cord Set Service: To replace the cord set, remove the gland nut and friction ring from the motor housing. Pull the cord through the opening and disconnect the motor wires from the terminals. Connect new motor wires to the cord set, place the friction ring and gland nut into the motor housing, and tighten the gland nut to 17.5 ft. lbs.
Troubleshooting: A detailed troubleshooting guide is provided to assist in identifying and correcting common problems such as the pump not running, not turning off, humming but not pumping, insufficient capacity, frequent cycling, unexpected starts, or noisy/excessive vibration. It emphasizes disconnecting power before handling and performing maintenance recommendations.