Xylem IM194 User Manual [en, es, fr]

WARNING

INSTRUCTION MANUAL

IM194R02

Effective December 2005 (date code M05) there are important changes to single-phase

motors. They now have a built-in, on-winding overload. They also require different start and run capacitors in the control panel than old motors. Please read the information on panel wiring and capacitor changes that are required to operate a new pump on an old control panel.

Grinder Pumps

1Ø and 3Ø, 1¼" Discharge

INSTALLATION, OPERATION AND TROUBLESHOOTING MANUAL

Owner’s Information

Pump Model Number: Pump Serial Number: Pump Options (see Nomenclature):

• Seal Fail (Moisture) Sensor

• Pilot Duty Thermal Sensor

Control Model Number:

Dealer: Dealer Phone No. Date of Purchase: Installation:

Current Readings at Startup: 1Ø 3Ø L1-2 L2-3 L3-1 Amps: Amps: Volts: Volts:

Table of Contents

SUBJECT PAGE

Safety Instructions ...................................................................3

Pre-Installation Checks ...........................................................3

Lifting of Pump ....................................................................... 3

Optional Guide Rail or Lift-Out System ................................ 3

Piping ......................................................................................4

Wiring and Grounding............................................................4

Selecting and Wiring Pump Control Panels and Switches ...4-5

Installation ............................................................................... 5

Operation .............................................................................5-6

Float Switch and Panel Chart .................................................6

Three Phase Power Unbalance ................................................ 7

Insulation Resistance Readings ...............................................7

Engineering Data ....................................................................8

Typical Installations ................................................................. 9

Trouble Shooting ...................................................................10

Limited Warranty ..................................................................12

DANGER

WARNING

CAUTION

WARNING

Hazardous voltage can shock, burn or cause death.

WARNING

CAUTION

SAFETY INSTRUCTIONS

TO AVOID SERIOUS OR FATAL PERSONAL INJURY OR MAJOR PROPERTY DAMAGE, READ AND FOLLOW ALL SAFETY INSTRUCTIONS IN MANUAL AND ON PUMP.

THIS MANUAL IS INTENDED TO ASSIST IN THE INSTALLATION AND OPERATION OF THIS UNIT AND MUST BE KEPT WITH THE PUMP.

This is a SAFETY ALERT SYMBOL. When you see this symbol on the pump or in the manual, look for one of the following signal words and be alert to the potential for personal injury or property damage.

Warns of hazards that WILL cause serious personal injury, death or major property damage.

Warns of hazards that CAN cause serious personal injury, death or major property damage.

Warns of hazards that CAN cause personal injury or property damage.

NOTICE: INDICATES SPECIAL INSTRUCTIONS WHICH ARE VERY IMPORTANT AND MUST BE FOLLOWED.

THOROUGHLY REVIEW ALL INSTRUCTIONS AND WARNINGS PRIOR TO PERFORMING ANY WORK ON THIS PUMP.

MAINTAIN ALL SAFETY DECALS.

All electrical work must be performed by

a qualied technician. Always follow the National Electrical Code (NEC), or the Canadian Electrical Code, as well as all local, state and provincial codes. Code questions should be directed to your local electrical inspector. Failure to follow electrical codes and OSHA safety standards may result in personal injury or equipment damage. Failure to follow manufacturer’s installation instructions may result in electrical shock, re hazard, personal injury or death, damaged equipment, provide unsatisfactory performance, and may void manufacturer’s warranty.

Standard units are not designed for use in

swimming pools, open bodies of water, hazardous liquids, or where ammable gases exist. These uids and gases may be present in containment areas. Tank or wetwell must be vented per local codes.

Only pumps specically Listed for Class 1, Division 1 are allowable in hazardous liquids and where ammable gases may exist. See speciﬁc pump catalog bulletins or pump nameplate for all agency Listings.

Disconnect and lockout electrical power

before installing or servicing any electrical equipment. Many pumps are equipped with automatic thermal overload protection which may allow an overheated pump to restart unexpectedly.

All three phase (3Ø) control panels for

submersible pumps must provide

Class 10, quick-trip, overload protection.

PRE-INSTALLATION CHECKS

Open all cartons and inspect for shipping damage. Report any damage to your supplier or shipping carrier immediately.

Important: Always verify that the pump nameplate Amps, Voltage, Phase, and HP ratings match your control panel and power supply.

Many of our sewage pumps are oil-lled. If there are any signs of oil leakage or if the unit has been stored for an extended period check the oil level in the motor dome and the seal housing, if so equipped.

Check the motor cover oil level through the pipe plug on top of the unit. The motor chamber oil should just cover the motor. Do not overll, leave room for expansion!

To check the seal housing oil level, where used, lay the unit on its side with the ll plug at 12 o’clock. Remove the plug. The oil should be within ½" (13mm) of the top. If low, rell with an ASTM 150 turbine oil. Replace the plug.

Oil is available in 5 gallon cans through our distributors. You can also source oil locally at motor repair shops. Typical oil brands are: Shell Turbo 32, Sunoco Sunvis 932, Texaco Regal R&O 32, Exxon Nuto 32 and Mobil DTE Light.

Check the strain relief nut on power cable strain assemblies. Power cables should be torqued to 75 in. lbs. for #16 cables and 80 in. lbs. for all other cable assemblies. Seal/heat sensor cables, where used, should be torqued to 75 in. lbs.

Warranty does not cover damage caused by connecting pumps and controls to an incorrect power source (voltage/ phase supply).

Attach the extra label supplied with the pump to this manual and record the model numbers and serial numbers from the pumps and control panel on the front of this instruction manual for future reference. Give it to the owner or afx it to the control panel when nished with the installation.

LIFTING OF PUMP

DO NOT LIFT, CARRY OR HANG PUMP BY THE ELECTRICAL CABLES. DAMAGE TO THE ELECTRICAL CABLES CAN CAUSE SHOCK, BURNS OR DEATH.

Lift the pump with an adequately sized chain or cable attached to the lifting eye bolt. DO NOT damage electrical and sensor cables while raising and lowering unit.

OPTIONAL GUIDE RAIL/

BASE ELBOW SYSTEM

In many efuent and sewage basins or lift stations it is advisable to install the pump on a guide rail system to facilitate installation and removal for inspection and/or service. Most codes do not allow personnel to enter a wetwell without the correct protective equipment and training. Guide rails are designed to allow easy removal of the pump without the need for entry into the wetwell or need to disturb piping. The guide rail should locate the pump opposite the inuent opening preventing stagnate areas where solids can settle. The basin or pit must be capable of supporting the weight of the pump and guide rail. The pit oor must be at.

NOTICE: FOLLOW THE INSTRUCTIONS THAT ARE

WARNING

Hazardous voltage can shock, burn or cause death.

PIPING

Discharge piping should be no smaller than the pump discharge diameter and kept as short as possible, avoiding unnecessary ttings to minimize friction losses.

Install a check valve to prevent uid backow. Backow can allow the pump to “turbine” backwards and may cause premature seal and/or bearing wear. If the pump is turning backwards when it is called on to start the increased torque may cause damage to the pump motor and/or motor shaft and some single-phase pumps may actually run backwards.

Install an adequately sized gate valve after the check valve for pump, plumbing and check valve maintenance.

Important – Before pump installation. Drill a 3⁄16" (4.8mm) relief hole in the discharge pipe. It should be located within the wetwell, 2" (51mm) above the pump discharge but below the check valve. The relief hole allows any air to escape from the casing. Allowing liquid into the casing will insure that the pump can start when the liquid level rises. Unless a relief hole is provided, a bottom intake pump could “air lock” and will not pump water even though the impeller turns.

All piping must be adequately supported, so as not to impart any piping strain or loads on the pump.

The pit access cover must be of sufcient size to allow for inspection, maintenance and crane or hoist service.

WIRING AND GROUNDING

Important notice: Read Safety Instructions before proceeding with any wiring.

PROVIDED WITH THE GUIDE RAIL ASSEMBLY.

Use only stranded copper wire to pump/motor and ground. The ground wire must be at least as large as the power supply wires. Wires should be color coded for ease of maintenance and troubleshooting.

Install wire and ground according to the National Electrical Code (NEC), or the Canadian Electrical Code, as well as all local, state and provincial codes.

Install an all leg disconnect switch where required by code.

Disconnect and lockout electrical power before performing any service or installation.

The electrical supply voltage and phase must match all equipment requirements. Incorrect voltage or phase can cause re, motor and control damage, and voids the warranty.

All splices must be waterproof. If using splice kits follow manufacturer’s instructions.

Select the correct type and NEMA grade junction box for the application and location. The junction box must insure dry, safe wiring connections.

Seal all controls from gases present which may damage electrical components.

FAILURE TO PERMANENTLY GROUND THE PUMP, MOTOR AND CONTROLS BEFORE CONNECTING TO POWER CAN CAUSE SHOCK, BURNS OR DEATH.

ON NON-PLUG UNITS, DO NOT REMOVE CORD AND STRAIN RELIEF. DO NOT CONNECT CONDUIT TO PUMP.

SELECTING AND WIRING

PUMP CONTROL PANELS

Control panel wiring diagrams are shipped with the control panels. Please use the control panel drawings in conjunction with this instruction manual to complete the wiring.

Important – Read Before Proceeding Single-Phase Motor Design Change Information –

Only for New Pump Installed on Older Panel.

Overload and Capacitors: Single-phase pumps built after Dec.1, 2005 (M05 date code) now feature a built-in, on winding overload. If replacing a pre-Dec 2005 pump (date code L05 or earlier) you have to change the capacitors in the old style control panel.

Pilot Duty Thermal Sensor/Overload Wire: Pre-Dec 2005 single-phase pumps had a pilot-duty thermal sensor wire connected between the pump and an overload heater block in the control panel, you will have to install a jumper wire across the two high temperature/overload terminals when installing a new pump on an old panel or the new pump may not operate.

Standard single-phase pumps no longer have a Pilot Duty Thermal Sensor Wire but it is available as an option. Another option is a Seal Fail Sensor & Wire. Please use the Nomenclature data found in this manual and the pump Order Number to determine which optional features are on the pump being installed.

CONTROL PANEL REQUIREMENTS

Single Phase Control Panels – Eff. Dec. 2005, M05 date code,

Series 1GD and 12GDS single phase grinder pumps require a

control panel containing as a minimum:

• Magnetic contactor

• Start capacitor

• Run capacitor

• Start relay

• Terminal wiring strip for all external connections.

See Recommended Panel Chart in Engineering Data Section

Capacitor and Starting Relay Information

Description Order a CP1GDB for New Pump Part Order No. – Old Pump

Start Cap 216-259 Mfd @ 330 vac RB-61 (594 Mfd @ 125 vac) Run Cap 50 Mfd @ 370 vac RB-62 (30 Mfd @ 370 vac) Start Relay 9K458 (RVA2ALKL) 9K458 or RB-60 (155031 102)

Three Phase Control Panels

Series 1GD and 12GDS three phase grinder pumps require a

control panel containing as a minimum:

• A 3 pole circuit breaker.

• Magnetic starter with ambient compensated Class 10

overloads.

• Transformer to supply 115 or 24 volt control power.

• Terminal wiring strip for all external connections.

RECOMMENDED CONTROL PANEL AND PUMP OPTIONS

• A panel seal failure circuit with relay and warning device can

only be used if pump is equipped with a seal failure sensor.

• High level alarm circuit

• Visual and/or audible high level alarm device. Our Simplex and Duplex “Single Phase Grinder Panels” (see

the price book) contain built-in capacitors, a start relay and wiring terminals. In the event you wish to source a control panel locally we sell capacitor kits which a panel shop will be able to build into a custom panel. Note: the kits contain the capacitors and start relay. These are not a eld installable, add-on item. Building the capacitor kits into a control panel is a job for a UL or CSA approved panel shop. Due to concern for liability, installer safety and Agency Listing, our Customer Service technicians are forbidden to assist anyone attempting to eld modify a standard control panel using these capacitor kits. We hope you understand and respect our position in this matter. “Recommended Control Panels” are listed in the Product Bulletins found in the respective product catalog or on the website named on the front cover of this IOM.

Motor High Temperature Sensor:

The single phase 1GD or 12GDS pumps have an optional feature, a built-in motor high temperature sensor. This heat sensor opens and closes the circuit to the contactor coil when properly wired into a control panel. It opens at a motor temperature of 275°F (135°C) and stops the pump. As the motor temperature drops to 112°F (78°C) the motor automatically restarts.

Pump Seal Failure (Moisture Detection) Sensor:

An option on the 1GD and standard on the 12GDS. This sensor located in the seal chamber detects the presence of moisture in the seal chamber. When connected to an optional seal failure relay and warning device in the control panel it signals that service needs to be performed on the lower seal.

The seal failure circuit option must be ordered as a control panel option, it is not supplied as a standard item.

FLOAT SWITCH TYPES

There are two basic oat switch designs; single-action and wide-angle. Single-action switches operate over a range of 15º so they open and close quickly. Wide-angle oats operate over a 90º swing with the tether length between the oat body and the pivot point controlling the On-Off range. The design determines how many oats are required with different systems or controls.

Floats may be normally open (NO) for pump down applications or to empty a tank. Normally closed (NC) switches are used to pump up or to ll a tank.

A control switch may be used only with a control panel, never direct connected to a pump.

SETTING THE FLOAT SWITCHES

There are no absolute rules for where to set the oat switches, it varies from job to job.

Suggested Rules to Follow: All ﬂoats should be set below the Inlet pipe!

Off Float: Best: set so the water level is always above the top

of the pump (motor dome). Next Best: set so the water level is not more than 6" below the top of the pump.

On Float: set so the volume of water between the On and Off oats allows two (2) HP and larger pumps to run a minimum of 2 minutes. Basin literature states the gallons of storage per inch of basin height.

Lag/Alarm Float(s): should be staggered above the Off and On oats. Try to use most of the available storage provided by the basin, save some space for reserve storage capacity. See

Diagrams and Charts in Float Switch Chart Section.

PANEL WIRING DIAGRAMS

Our control panels are shipped with instructions and wiring diagrams. Use those instructions in conjunction with this IOM. Electrical installation should be performed only by qualied technicians. Any problem or questions pertaining to another brand control must be referred to that control supplier or manufacturer. Our technical people have no technical schematics or trouble shooting information for other companies' controls.

ALARMS

We recommend the installation of an alarm on all Wastewater pump installations. Many standard control panels come equipped with alarm circuits. If a control panel is not used, a stand alone high liquid level alarm is available. The alarm alerts the owner of a high liquid level in the system so they can contact the appropriate service personnel to investigate the situation.

INSTALLATION

Connect the pump(s) to the guide rail pump adapters or to the discharge piping. Guide rail bases should be anchored to the wetwell oor.

Complete all wiring per the control panel wiring diagrams and NEC, Canadian, state, provincial and/or local codes. This a good time to check for proper rotation of the motors/impellers.

DANGER

DO NOT PLACE HANDS IN PUMP SUCTION WHILE CHECKING MOTOR ROTATION. TO DO SO WILL CAUSE SEVERE PERSONAL INJURY.

Always verify correct rotation. Correct rotation is indicated on the pump casing. Three phase motors are reversible. It is

Hazardous Machinery

allowable to bump or jog the motor for a few seconds to check impeller rotation. It is easier to check rotation before installing the pump. Switch any two power leads to

reverse rotation. Lower the pump(s) into the wetwell. Check to insure that the oats will operate freely and not

contact the piping.

OPERATION

Once the piping connections are made and checked you can run the pumps.

Control Panel Operation – Fill the wetwell with clear water.

Use the pump H-O-A (Hand-Off-Automatic) switches in Hand to test the pumps. If they operate well in Hand proceed to test Automatic operation. If the pumps run but fail to pump, they are probably air locked, drill the relief holes per the instructions in the Piping Section.

Place Control Panel switch(es) in Automatic position and thoroughly test the operation of the ON, OFF, and Alarm oats by lling the wetwell with clear water. Important: Failure to provide a Neutral from the power supply to a 1Ø, 230 volt Control Panel will not allow the panel control circuit to operate. The Neutral is necessary to complete the 115 volt control circuit.

Check voltage and amperage and record the data on the front of this manual for future reference. Compare the amperage readings to the pump nameplate maximum amperage. If higher than nameplate amperage investigate cause. Operating the pump off the curve, i.e. with too little head or with high or low voltage will increase amperage. The motor will operate properly with voltage not more than 10% above or below pump nameplate ratings. Performance within this range will not necessarily be the same as the published performance at the exact rated nameplate frequency and voltage. Correct the problem before proceeding. Three phase unbalance is also a possible cause. See Three Phase Power Unbalance and follow the instructions.

Reset the Alarm circuit, place pump switch(es) in the Automatic position and Control Switch in ON position. The system is now ready for automatic operation.

Explain the operation of the pumps, controls and alarms to the end user. Leave the paperwork with the owner or at the control panel if in a dry, secure location.

NOMENCLATURE DESCRIPTION

1st, 2nd and 3rd Characters – Discharge Size and Type

1GD = 1¼" discharge, grinder, dual seal

4th Character – Mechanical Seals

5 = silicon carbide/silicon carbide/BUNA – lower seal and carbon/ceramic/BUNA – upper seal (standard) 3 = silicon carbide/tungsten carbide/BUNA – lower seal and carbon/ceramic/BUNA – upper seal (optional)

5th Character – Cycle/RPM

1 = 60 Hz/3500 RPM 5 = 50 Hz/2900 RPM

6th Character – Horsepower

G = 2 HP

7th Character – Phase/Voltage

1 = single phase, 230 V 2 = three phase, 200 V 3 = three phase, 230 V 4 = three phase, 460 V 5 = three phase, 575 V 6 = three phase, 380 V 8 = single phase, 208 V

8th Character – Impeller Diameter

A = 55⁄8", Standard C = 4¾" B = 5¼" D = 4¼"

9th Character – Cord Length (Power and Sensor)

A = 20' (standard) G = 75' D = 30' J = 100' F = 50'

10th Character – Options

S = Seal fail, moisture sensing circuit

E = Epoxy paint

Last Character – Option

H = Pilot duty thermal sensors1

These options add a 2-wire or 4-wire sensor cord to the pump and

require optional control panel circuits to operate. See panel options on control panel bulletin BCP5.

FLOAT SWITCH AND PANEL CHART

Inlet

Alarm SW3

Pump On SW2

Pump Off SW1

Discharge

FLOAT SWITCH AND PANEL CHART

The purpose of this chart is to show the required switch quantities and the function of each switch in a typical wastewater system. The quantities required vary depending on the switch type, single-action or wide-angle. Switch quantities also vary by panel type: simplex with and without alarms, and duplex with alarms.

Duplex Panels using single-action switches:

Three Float Panel Wiring SW1 Bottom Pumps Off

SW2 Middle 1st Pump On

SW3 Top 2nd Pump & Alarm On

Four Float Panel Wiring ② SW1 Bottom Pumps Off

SW2 2nd 1st Pump On SW3 3rd 2nd Pump On

SW4 Top Alarm On

Duplex Panels using wide-angle switches:

Three Float Panel Wiring SW1 Bottom 1st Pump On/Both Off SW2 Top 2nd Pump & Alarm On

Four Float Panel Wiring SW1 Bottom 1st Pump On/Both Off

SW2 Middle 2nd Pump On

SW3 Top Alarm On

Simplex ①

Discharge

Simplex Panel using single-action switches:

Simplex Panel with Alarm ① SW1 Bottom Pump Off

SW2 Middle Pump On

SW3 Top Alarm On/Off Simplex Panel with No Alarm SW1 Bottom Pump Off

SW2 Top Pump On

Simplex Panel using wide-angle switches:

Simplex Panel with Alarm SW1 Bottom Pump On/Off SW2 Top Alarm On/Off

Simplex Panel with No Alarm SW1 Pump On/Off

Inlet

Alarm SW4

Lag Pump On

SW3

Lead Pump On

SW2

Pump Off

SW1

Duplex ②

THREE PHASE POWER UNBALANCE

A full three phase supply consisting of three individual transformers or one three phase transformer is recommended. “Open” delta or wye connections using only two transformers can be used, but are more likely to cause poor performance, overload tripping or early motor failure due to current unbalance.

Check the current in each of the three motor leads and calculate the current unbalance as explained below.

If the current unbalance is 2% or less, leave the leads as connected.

If the current unbalance is more than 2%, current readings should be checked on each leg using each of the three possible hook-ups. Roll the motor leads across the starter in the same direction to prevent motor reversal.

To calculate percent of current unbalance: A. Add the three line amp values together.

B. Divide the sum by three, yielding average current. C. Pick the amp value which is furthest from the average

current (either high or low).

D. Determine the difference between this amp value

(furthest from average) and the average.

E. Divide the difference by the average. Multiply the

result by 100 to determine percent of unbalance.

Current unbalance should not exceed 5% at service factor load or 10% at rated input load. If the unbalance cannot be corrected by rolling leads, the source of the unbalance must be located and corrected. If, on the three possible hookups, the leg farthest from the average stays on the same power lead, most of the unbalance is coming from the power source.

Contact your local power company to resolve the imbalance.

Hookup 1 Hookup 2 Hookup 3 Starter Terminals L1 L2 L3 L1 L2 L3 L1 L2 L3

Motor Leads R B W W R B B W R T3 T1 T2 T2 T3 T1 T1 T2 T3

Example:

T3-R = 51 amps T2-W = 50 amps T1-B = 50 amps T1-B = 46 amps T3-R = 48 amps T2-W = 49 amps T2-W = 53 amps T1-B = 52 amps T3-R = 51 amps Total = 150 amps Total = 150 amps Total = 150 amps ÷ 3 = 50 amps ÷ 3 = 50 amps ÷ 3 = 50 amps — 46 = 4 amps — 48 = 2 amps — 49 = 1 amps 4 ÷ 50 = .08 or 8% 2 ÷ 50 = .04 or 4% 1 ÷ 50 = .02 or 2%

INSULATION RESISTANCE READINGS

Normal Ohm and Megohm Values between all leads and ground

Condition of Motor and Leads Ohm Value Megohm Value

A new motor (without drop cable). 20,000,000 (or more) 20 (or more)

A used motor which can be reinstalled in well. 10,000,000 (or more) 10 (or more)

Motor in well. Readings are for drop cable plus motor.

New motor. 2,000,000 (or more) 2 (or more)

Motor in good condition. 500,000 - 2,000,000 .5 - 2

Insulation damage, locate and repair. Less than 500,000 Less than .5

Insulation resistance varies very little with rating. Motors of all HP, voltage and phase ratings have similar values of insulation resistance.

Insulation resistance values above are based on readings taken with a megohmmeter with a 500V DC output. Readings may vary using a lower voltage ohmmeter, consult factory if readings are in question.

This table was reprinted through the courtesy of Franklin Electric.

ENGINEERING DATA

GRD

Red

Black

White

Green

PUMP

ENGINEERING DATA

Engineering data for speciﬁc models may be found in your catalog and on our website (address is on the cover).

PUMP OPERATION GUIDELINES

Minimum Submergence

Continuous Duty

Intermittent Duty

RECOMMENDED 1Ø CONTROL PANELS

Effective with December 2005 (M05) Date Codes -

Single-Phase 1GD Pumps Contain a Built-in, Auto Reset Overload.

Important Control Panel Requirements and Notes:

1) See panel bulletin BCP5 for other available options.

2) These pumps require a magnetic contactor, start and run capacitors and a starting relay in the control panel.

3) CP-1GDB Capacitor packs with starting relays are available on product bulletin BCPCAP. They are for certiﬁed panel shops to “build” into a custom panel. Field installing capacitor packs into a S10020 or D10020 will negate the UL listing on that panel and is therefore not permissable.

Fully Submerged

6" Below Top of Motor

Pump Pump Seal Voltage Recommended Control Panel Order No. Fail Circuit / Phase Simplex Duplex

1GD51G1A_ NO 230 / 1 S1GD2 D1GD2 1GD51G8A_ NO 208 / 1 S1GD2 D1GD2 1GD51G1A_S YES 230 / 1 S1GD2H D1GD2J 1GD51G8A_S YES 208 / 1 S1GD2H D1GD2J

Continuous Operation

Intermittent Operation

Maximum Fluid Temperature

104º F 40º C

140º F 60º C

PANEL CAPACITOR WIRING DIAGRAMS

TYPICAL PLUMBING AND INSTALLATION

SERVICE POLE

CONTROL PANEL

INLET GROMMET

FLOAT SWITCH

HIGH LEVEL ALARM

(OPTIONAL)

FLOAT SWITCH

ALARM LIGHT

HINGED ACCESS DOOR

GUIDE RAIL

VENT

VALVE

OPERATING

ROD

DISCHARGE

CHECK VALVE

LOWER PUMP GUIDE

Typical Three Phase Connection Diagram

Fig. 2

Fig. 1

WARNING

Hazardous voltage

TROUBLESHOOTING

FAILURE TO DISCONNECT AND LOCKOUT ELECTRICAL POWER BEFORE ATTEMPTING ANY SERVICE CAN CAUSE SHOCK, BURNS OR DEATH.

SYMPTOM PROBABLE CAUSE RECOMMENDED ACTION

MOTOR NOT RUNNING Motor thermal protector tripped. Allow motor to cool. Insure minimum pump submergence. Clear debris from casing and impeller.

NOTE: If circuit breaker “OPENS” repeatedly,

Open circuit breaker or blown fuse. Determine cause, call a qualied electrician.

DO NOT reset. Call

Pump impeller binding or jammed. Check motor amp draw. If two or more times higher

qualied electrician.

than listed on pump nameplate, impeller or cutter is a) Manual operation Power cable is damaged. locked, motor bearings or shaft is damaged. Clear Inadequate electrical connection debris from cutter casing and impeller, consult with

in control panel. Resistance between power leads and ground should b) Automatic operation No neutral wire read innity. If any reading is incorrect, call a connected to control panel. qualied electrician.

Inadequate electrical connection Inspect control panel wiring. Call a qualied in control panel. electrician.

Defective liquid level switch. With switch disconnected, check continuity while

NOTE: Check the pump in

activating liquid level switch. Replace switch, as

manual mode ﬁrst to conﬁrm

required.

operation. If pump operates,

Insufcient liquid level to Allow liquid level to rise 3" to 4" (76 mm - 101 mm)

the automatic control or

activate controls. above turn-on level.

wiring is at fault. If pump

Liquid level cords tangled. Untangle cords and insure free operation.

does not operate, see above.

PUMP WILL NOT Liquid level cords tangled. Untangle cords and insure free operation. TURN OFF

Pump is air locked. Shut off pump for approximately one minute, then restart. Repeat until air lock clears. If air locking persists in a system with a check valve, a 3⁄16" (4.8 mm) hole may be drilled in the discharge pipe approximately 2" (51 mm) above the discharge connection.

dealer.

Inuent ow is matching pump’s Larger pump may be required. discharge capacity.

LITTLE OR NO LIQUID Check valve installed backwards, Check ow arrow on valve and check valve DELIVERED BY PUMP plugged or stuck closed. operation.

Excessive system head. Consult with dealer. Pump inlet plugged. Inspect and clear as required. Improper voltage or wired Check pump rotation, voltage and wiring.

incorrectly. Consult with qualied electrician. Pump is air locked. See recommended action, above. Impeller is worn or damaged. Inspect impeller, replace as required. Liquid level controls defective Inspect, readjust or replace as required.

or improperly positioned. PUMP CYCLES Discharge check valve inoperative. Inspect, repair or replace as required.

CONSTANTLY Sewage containment area too small. Consult with dealer. Liquid level controls defective or Inspect, readjust or replace as required.

improperly positioned. Inuent excessive for this size Consult with dealer.

pump.

NOTES

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