Liberty Pumps Pro370 User Manual [en, es, fr]

IMPORTANT:

Prior to installation, record Model, Serial Number, and Code Number from pump nameplate for future reference.

MODEL ________________________

SERIAL ______________________

CODE ______________________ INSTALLATION

DATE _______________________

7000 Apple Tree Avenue Bergen, NY 14416 Phone: (800) 543-2550 Fax: (585) 494-1839 www.libertypumps.com

Contents

1.) General Information

2.) The Basin

3.) Installation and Connections

4.) QuickTree® and Access Cover

5.) Electrical Service and Operation

6.) Maintenance and Troubleshooting

Installation Manual 7225000E

Pro-Series Sewage Systems

Models

Pro370-Series

21” x 30” System

41 Gallons

Pro380-Series

24” x 24” System

41 Gallons

MO DE L SPECI FI CA TI ON S

System Model

Pump

Model

Volts

Phase

Full Load

Amps

Solids

Handling

FNPT

Discharge

Shut-off

Head (no-flow)

P372LE41, P382LE41

P373LE41, P383LE41

LE41M

4/10

115

115 1 1

12 12

2”

3”

17’

P372LE51, P382LE51 P373LE51, P383LE51

LE51M LE51M

1/2 1/2

115 115 1 1

12 12

2” 2”

2” 3”

25’ 25’

P372LE52, P382LE52 P373LE52, P383LE52

LE52M LE52M

1/2 1/2

208-230 208-230

1 1 6.8

6.8

2” 2”

2” 3”

25’ 25’

P372LE71, P382LE71 P373LE71, P383LE71

LE71M LE71M

3/4 3/4

115 115 1 1

12 12

2” 2”

2” 3”

28’ 28’

P372LE72, P382LE72 P373LE72, P383LE72

LE72M LE72M

3/4 3/4

208-230 208-230

1 1 6 6 2” 2”

2” 3”

28’ 28’

P372LE102, P382LE102 P373LE102, P383LE102

LE102M LE102M

1 1 208-230 208-230

7 7 2” 2”

2” 3”

36’ 36’

NOTE: LEH-Series High-Head pumps require a minimum application of 15’ head.

P372LEH102, P382LEH102 P373LEH102, P373LEH102

LEH102M LEH102M

1 1 208-230 208-230

1 1 12 12

2” 2”

2” 3”

53’ 53’

1. General Information

Before installation, read the following instructions carefully. Each Liberty pump is individually factory tested to insure proper performance. Closely following these instructions will eliminate potential operating problems, assuring years of trouble-free service.

 Risk of electric shock. To reduce risk of electric shock, always disconnect pump from power source before handling.  The electrical connections and wiring for a pump installation should only be made by qualified personnel.  This pump is supplied with a grounding conductor or a grounding-type attachment plug. To reduce the risk of electric shock,

be certain that the grounding conductor is connected only to a properly grounded control panel or, if equipped with a grounding-type plug, that it is connected to a properly grounded, grounding-type receptacle.

 Do not bypass grounding wires or remove ground prong from attachment plugs.  Do not remove cord and strain relief, and do not connect conduit to pump.  Do not use an extension cord.  This pump requires separate, properly fused and grounded branch circuit. Make sure the power source is properly sized for

the voltage and amperage requirements of the motor, as noted on the pump nameplate.

 The electrical outlet or panel shall be within the length limitations of the pump power cord, and at least 4 feet above floor level

to minimize possible hazards from flood conditions.

 These pumps are not to be installed in locations classified as hazardous in accordance with the National Electric Code,

ANSI/NFPA 70.

 The installation must be in accordance with the National Electric Code and all applicable local codes and ordinances.

 Do not use these pumps in water over 140 F.  The Uniform Plumbing Code (UPC) states that sewage systems shall have an audio and visual alarm that signals a

malfunction of the system, to reduce the potential for property damage.

Pro-Series System: The Pro-Series 370 and 380 systems are shipped from the factory fully assembled with a wide range of possible pumps. The following chart lists the pumps available in the Pro370 and Pro380. Your specific pump is identified by the model number on the nameplate attached to the Pro-Series cover. Systems ordered with alarm option have an “/A” suffix designating the alarm. “/A2” …ALM-2, “/A2W” …ALM-2W, “/A3” …ALM-3.

2. The Basin

Pro370-Series

Pro380-Series

Pump and Alarm floats are pre-set on the QuickTree® system at proper operating levels. Do not adjust floats.

Was your system sized by a professional? Minimum fluid flows are required in sewage applications. Consult Factory for proper pump sizing prior to installation.

QuickTree® Technology: The Pro-Series by Liberty Pumps features new QuickTree® float system technology. The QuickTree® system is located under a separate access cover for ease of maintenance and service. Floats for both pump activation and alarm (if equipped) are mounted on a stainless steel tree (rod), separate from the pump. There is no need to disconnect plumbing or remove the pump to inspect service or replace floats. QuickTree® floats are preset at the factory for optimum operating levels and should not be adjusted.

The Pro-Series Systems features a clear disposable construction cover designed to protect the system during rough-in and masonry work. The protective cover should remain in place until finish plumbing; however, can be removed and reinstalled if required. The cover is snapped into the threaded ports of the discharge and vent. To remove the clear cover, simply pull upward disengaging it from the discharge and vent holes.

In Ground Installation of Pro-Series Basins

A. Excavation: Excavate the hole as small as possible, with a minimum recommended 8" diametrical clearance around the tank.

Never place the basin directly in contact with rocks or other sharp objects. Place only fine, 1/8" to 3/4" pea gravel or 1/8" to 1/2" washed, crushed stone as bedding between the basin and the hole walls. Do not use sand or native soil as backfill. Properly compact underneath the basin to provide a solid, level base that can support the weight of the filled basin. It is recommended that the top lip of the basin be level with the finished floor.

B. Initial Backfill: Only fine, 1/8" to 3/4" pea gravel or 1/8" to 1/2" washed, crushed stone should be used around the bottom of the

basin to hold it in place. Do not use sand or native soil as backfill. Make the inlet connection as required for your basin.

C. Inlet Connection: The Liberty P370 and P380 series basins have a 4" inlet molded to the side of the tank. This inlet is sized to

accept a 4" no-hub type coupling. Connect the gravity drainage line from the fixtures to this hub.

D. Final Backfill: Large rocks, clods, and foreign objects should be kept out of the backfill material. Only fine, 1/4" to 3/4" pea

gravel, or 1/8" to 1/2" washed, crushed stone is recommended. Do not use sand or native soil as backfill. Mound the backfill slightly and allow for natural settling. Provide access to the basin cover for maintenance and service.

Do not exert heavy pressure or run heavy equipment on the backfill material as this could cause the

tank to collapse.

Dimensional Data

Typical Installation

This is a recommended installation only. Variations may apply.

3. Installation and Connections

A. Discharge: Using an adapter, connect the discharge

pipe to the threaded 2” or 3” port provided on the cover.

IMPORTANT: Do not reduce the discharge pipe size below that which is provided on the pump. Sewage

pumps should not be smaller than 2". In some applications, it may be necessary to increase the pipe size to reduce friction losses. Contact Liberty Pumps if you have questions regarding proper pipe sizes and flow rates.

Install the remaining discharge line. A union should be installed just above the cover to facilitate pump removal if necessary. A check valve is recommended after the union to prevent the backflow of liquid after each pumping cycle. A gate or ball valve should follow the check valve to allow periodic cleaning of the check valve or removal of the pump. The remainder of the discharge line should be as short as possible with a minimum number of turns, to minimize friction head loss. Do not restric t the discharge below 2" in sewage applications. Larger pipe sizes may be required to eliminate friction head loss over long runs. Contact Liberty Pumps or other qualified person if there are questions regarding proper pipe size and flow rates.

B. Vent: A threaded 2” or 3” connection is provided on top of the cover which must be piped to the existing building vent, or extended

outside on its own standpipe. The vent size should be in accordance with applicable codes, but not less than the discharge size.

Note: Pro-Series systems shipped with steel pipe option have a rubber grommet seal on the discharge instead of female NPT connections.

RUBBER PLUG SEAL

4. QuickTree® and Access Cover

Pro-Series P370 and P380 systems feature new QuickTree® technology. The QuickTree® float system uses a stainless steel mounting rod (tree) and specially designed cord clamping brackets to affix the pump float and (optional) alarm float in the system. All

floats are pre-set at the factory at optimum levels and do not require adjustment. NOTE: Field adjusting floats may cause improper activation or turn-off of the pump and optional alarm.

QuickTree® removal and float inspection: The QuickTree® system is located under the separate access cover to help ease

inspection, service and replacement of a float. To inspect the float(s), simply unbolt the access cover and lift out the QuickTree® assembly from its holder. There is no need to disconnect plumbing or remove the pump. Pro-Series systems feature a manual LEseries pump (with no switch attached directly to the pump). Operation of the pump is accomplished by the QuickTree® system.

Re-inserting the QuickTree® : After service or inspection of the floats, re-insert the QuickTree® into its holder. Cords from the pump, float switch and optional alarm need to be properly sealed as described below in the Integrated Cord Seal System.

Integrated Cord Seal System: It is important that cords from the pump motor, float switch and optional alarm float are sealed in the specially designed rubber sealing channels under the access cover. Proper sealing is required to keep sewer gas from leaking from the system. Place the cords securely in the rubber channels as shown in FIGURE B. being careful to remove excessive cord “slack” from inside the system. IMPORTANT: Three cord channels are provided. For systems without the alarm option, only two channels will be used and the third must be “plugged” with an attached rubber plug seal. SEE FIGURE C. If the alarm cord is present, all three channels will be used. All rubber cover gaskets are permanently attached and do not require replacement.

IMPORTANT: Proper cord sealing – behind QuickTree® rod

TETHER LENGTH (SWITCH TO CLAMP)

ROD

POSITION Alarm Float Control Float Alarm Float Control Float

1 3.5" 2 3.5" 3 3.0" 4 3.5"

P370

P380

Float positions 1, 2, 3 and 4 are identified by a “flat” stamped into the stainless steel rod. 1 is highest, 4 is lowest.

P370 and P380 systems have different tether lengths. See above chart for proper tether length and correct rod position.

QuickTree® settings for PRO370 and PRO380 Systems:

When servicing the QuickTree® place the switch cord into the trough or channel then slip the stainless steel rod through the clamp and tighten the screw with a Philips screw driver do not over tighten. Flats have been formed on the rod to designate float positioning the screw should be tightened onto the flat. The tether length is the amount of cord between the clamp and float.

Fig. 5 – Direct Wiring of 115V or 208-230V,

Single Phase, Automatic Pumps

TEMPORARY

MANUAL

OPERATION

DO!

DON’T!

Fig. 4 Piggyback plug installation.

5. Electrical Service and Operation

Figure C – Direct wiring of 115V or 208-230V, single phase, automatic pumps.

 Risk of electric shock. Always disconnect the pump from the power source before handling or making adjustments.  The electrical connections and wiring for a pump installation should only be made by qualified personnel.

 This pump is supplied with a grounding conductor or a grounding-type attachment plug. To reduce the risk of electric shock, be

certain that the grounding conductor is connected only to a properly grounded control panel or, if equipped with a grounding-type plug, that it is connected to a properly grounded, grounding-type receptacle.

voltage and amperage requirements of the motor, as noted on the pump nameplate.

 The electrical outlet or panel shall be within the length limitations of the pump power cord, and at least 4 feet above floor level to

minimize possible hazards from flood conditions.

 The installation must be in accordance with the National Electric Code and all applicable local codes and ordinances.

All P370 and P380 models come factory-equipped with the float switch mounted on the QuickTree® assembly. These models come with two cords - one to the float switch and the other to the pump motor. The switch cord has a series (piggyback) plug enabling the pump (motor) cord to be plugged into the back of it (See Fig.4). The purpose of this design is to allow manual operation of the pump.

For automatic operation the two cords should be interconnected and plugged into a separately fused, grounded outlet of proper amp capacity for your selected pump model. (See Section 1, General Information, or the pump nameplate for electrical specifications of your model.) Both cords are equipped with 3-prong plugs and must be plugged into a properly grounded 3-wire receptacle. DO NOT REMOVE THE GROUND PRONGS.

For manual operation, or in the event of switch failure, the pump cord can be separated and plugged into the electrical outlet, directly bypassing the switch. 208-230V single phase pumps should only be operated without the float switch by using the circuit breaker or panel disconnect. Do not let the pump run dry for extended periods.

If the pump is to be wired directly into a control device or junction box, and it is necessary to remove the plugs, have a certified electrician do the wiring in accordance with the National Electric Code and applicable local codes. See Fig. 5 for direct wire installation of single phase, automatic pumps.

In 208-230V installations, one side on the line going to the pump is always “hot”, whether the float switch is on or off. To avoid hazards, install a double pole disconnect near the pump installation.

Problem

Cause

Correction

Pump will not run.

 Blown fuse or other interruption of

power; improper voltage.

 Check that the unit is securely plugged in.

Have an electrician check all wiring for proper connections and adequate voltage and capacity.

 Switch is unable to move to the

“turn on” position due to interference with the side of basin or other obstruction

 Position the pump or switch so that it has

adequate clearance for free operation.

 Insufficient liquid level.

 Make sure the liquid level is allowed to rise

enough to activate switch(s).

 Defective switch.

 Remove and replace switch.

Pump will not turn off.

 Switch(s) unable to move to the

“turn off” position due to interference with the side of basin or other obstacle.

 Position the pump or switch so that it has

adequate clearance for free operation.

 Defective switch.

 Remove and replace switch.

Pump runs or hums, but does not pump.

 Discharge is blocked or restricted.

 Check the discharge line for foreign material,

including ice if the discharge line passes through or into cold areas.

 Check valve is stuck closed or

installed backwards.

 Remove check valve(s) and examine for

freedom of operation and proper installation.

 Gate or ball valve is closed.

 Open gate or ball valve.

 Total lift is beyond pump's

capability.

 Try to route piping to a lower level. If not

possible, a larger pump may be required. Consult the factory.

 Pump impeller is jammed or volute

casing is plugged.





Remove the pump from the basin. Detach the pump base and clean the area around the impeller. Reassemble and reinstall.

Pump runs periodically when fixtures are not in use.

 Check valve was not installed, is

stuck open or is leaking.

 Remove check valve(s) and examine for

freedom of operation and proper installation.

 Fixtures are leaking.

 Repair fixtures as required to eliminate leakage.

Pump operates noisily.

 Foreign objects in the impeller

cavity.





Remove the pump from the basin. Detach the pump base and clean the area around the impeller. Reassemble and reinstall.

 Broken impeller.

 Consult the factory for information regarding

replacement of impeller.

 Worn bearings.

 Return pump to the factory or authorized repair

station for repair.

 Piping attachments to building are

too rigid.

 Replace a portion of the discharge line with

rubber hose or connector.

6. Maintenance and Troubleshooting

Risk of electric shock. Always disconnect the pump from the power source before handling or making adjustments.



NOTE: Liberty Pumps, Inc. assumes no responsibility for damage or injury due to disassembly in the field. Disassembly, other than at

Liberty Pumps or its authorized service centers, automatically voids warranty.

Supplemental Installation Instructions

370XL/380XL Series 10’ stack test basins

XL Series sewage ejector basins are designed to withstand the 10’ stack test required by some municipalities. Proper installation of the specified cover flange is essential to ensure that the test is met. Strict adherence to these instructions is required. Under no circumstances should the cover be installed in a manner inconsistent with these instructions.

Types of Systems:

XL Series Basins are available as Fully Assembled Systems complete with pump and discharge piping, as Basin and Cover Assembly Kits with no pump or plumbing, and as Basins only. Please follow the instructions below as required to correspond to the type of system you have.

Basin Installation:

1. For all systems refer to the primary instructions as supplied with this Ejector System or Basin for excavating the pit, plumbing connections, and backfilling.

2. If the top of the 370XL or 380XL Series basin is below grade, an access riser model ARC18 is required. The

maximum burial depth of 18" with respect to the top of the basin. Consult Liberty Pumps or your distributor for more information on ARC Series Access Risers. 1-800-543-2550.

Installing the pump in the XL Series Basin or XL Basin and Cover Assembly Kit:

1. Liberty Pumps XL Series Basins as purchased separately will require the appropriate 16-bolt Pro-Series cover assembly to make an effectively sealed ejector system. Contact the factory for the proper cover for your application.

2. Size the length of the discharge piping to reach from the discharge of the pump to be within the discharge pipe socket with integral lip seal on the underside of the Pro-Series cover. Liberty Pumps sewage pumps will use threaded-oneend (TOE) nipples of 23.75" length for 370XL Series Basins, or 17.50" long for 380XL Series Basins. Install the pipe into the threaded discharge of the pump.

3. Lower the pump into the basin, fitting the pump legs into the Torque Stops.

4. Insert power cord for the pump -- and the piggyback switch cord, if so equipped -- through the underside of the inspection cover hole and position cover over pipe nipple while aligning the bolt holes. Use sixteen 1/4 - 20 UNC bolts and washers to secure cover to the basin. Tighten bolts to 40 inch-pounds. WARNING: Do not over tighten bolts. The soft, integral gasket will conform to the top of the tank. The bolts may be re-torqued up to 60 inch-pounds to seal any leaks that may occur during a 10' stack test. Additionally, a small amount of RTV silicone sealant may be used should the gasket or inserts be damaged.

5. Liberty Pumps recommends the use of manual type pumps and the appropriate Liberty QuickTree® Switch Kit for mounting of pump control and alarm floats. Contact the factory for ordering information. Install the QuickTree® Kit per the instructions included. Liberty Pumps automatic type pumps with piggyback float switches may also be used. Lay the power cable and switch cable in the grooves in the inspection cover recess as is shown in the primary instructions as included with this system. Attach the inspection cover to the main cover using six 1/4 - 20 UNC bolts and washers. Tighten the bolts furthest away from the power cord grooves first, torqueing to 40 inch-pounds. WARNING: Do not over tighten bolts. The soft, integral gasket will conform to the top of the cover and power cords. The bolts may be re-torqued up to 60 inch-pounds to seal any leaks that may occur during a 10' stack test. Additionally, a small amount of RTV silicone sealant may be used should the gasket or inserts be damaged.

370XL and 380XL Series Basins IAPMO listed, # 4361

+ 21 hidden pages

Liberty Pumps Pro370 User Manual [en, es, fr]

Specifications and Main Features

Frequently Asked Questions

User Manual