Tsurumi Pump LB-250 Operation Manual Download Page 19

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 PRECAUTIONS DURING TEST OPERATION AND OPERATION

CAUTION

Do not scratch, fold, twist, make 

alterations, or bundle the cable, or 

use it as a lifting device. 

The cable 

may be damaged, which may 

cause electrical leakage, short-

circuit, electrical shock, or fire.

Be sure to provide a ground wire 

securely. Do not connect the 

ground wire to a gas pipe,

water pipe, lightening rod, or 

telephone ground wire. 

Improper 

grounding could cause electri-

cal shock.

Do not use the cabtyre cable, power 

plug, or power outlet if it is damaged 

or it is not closely fitted. Connect 

every conductor of the cabtyre cable 

securely to the terminals. 

Failure to 

observe this can lead to electrical 

shock, short-circuit, or fire.

When the product will be carried by 

hand, decide the number of persons 

considering the mass of the product. 

When lifting up the product, do 

not attempt to do it by simply 

bowing from the waist. Use the 

knees, too, to protect your back.

This pump is neither dust-proof nor 

explosion-proof. Do not use it at a 

dusty place or at a place where 

toxic, corrosive or explosive gas is 

present. 

Use in such places 

could cause fire or explosion.

Prevent a metallic object or dust 

from sticking to the power plug.

 

Adhesion of foreign object to the 

plug could cause electrical 

shock, short-circuit, or fire.

CAUTION

WARNING

Never try to operate the pump if 

somebody is present in the pump 

sump.

 

If an electrical leakage 

occurs, it can cause electrical 

shock.

When changing power connection is 

needed to correct the direction of 

rotation, be sure to turn off the 

power supply (earth leakage circuit 

breaker, etc.), and perform the work 

after making sure that the impeller 

has stopped completely.

 Failure to 

do so may lead to electrical 

shock, short-circuit, or injury.

Never start the pump while it is 

suspended, as 

the unit may jerk 

and could lead to injury.

When inspecting the pump, be sure 

to turn off the power supply (earth 

leakage circuit breaker, etc.) so that 

the pump may not start acciden-

tally. 

Failure to do so may lead to 

a serious accident.

Do not operate the product under 

any voltage other than described 

on the nameplate with the voltage 

variation limit within ±10%. If it is 

operated with a generator, it is 

strongly suggested not to operate 

other equipment with the same 

generator. 

Failure to observe 

this caution may cause 

malfunction and breakdown of 

the product, which may lead to 

electrical leakage or electrical 

shock.

Do not touch the product with bare 

hands during or immediate after 

the operation, as the product may 

become very hot during operation. 

Failure to observe this caution 

may lead to be burned.

Do not use the product in a liquid 

other than water. 

Use in oil, salt 

water or organic solvents will 

damage it, which may lead to 

electrical leakage or electrical 

shock.

Do not run the product dry or 

operate it with its gate valve 

closed, as 

doing so will damage 

the product, which may lead to 

electrical leakage or electrical 

shock.

For water 

only

Rated

Voltage

OFF

OFF

STOP

Summary of Contents for LB-250

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Page 17: ...facturer will not assume any liability After reading this Operation Manual keep it in a location that is easily accessible so that it can be re ferred to whenever information is needed while operating...

Page 18: ...N may at times lead to a more serious problem In either case the categories pertain to safety related items and as such must be observed carefully WARNING CAUTION NOTE Explanation of Symbols PRECAUTIO...

Page 19: ...ical leakage occurs it can cause electrical shock When changing power connection is needed to correct the direction of rotation be sure to turn off the power supply earth leakage circuit breaker etc a...

Page 20: ...assembly always perform a test operation before resuming use of the product Improper assembly can result in electrical leakage electrical shock fire or water leakage In case any abnormality excessive...

Page 21: ...its voltage and frequency speci cations 2 PART NAMES Cabtyre Cable Mechanical Seal Lubricant Shaft Sleeve V Ring Oil Casing Wearing Impeller Handle Hose Coupling Oil Plug Oil Lifter Strainer Stand Pum...

Page 22: ...to verify the insulation resistance of the motor Note The weight mass given above is the operating weight of the pump itself not including the cabtyre cable Standard speci cations 50 60Hz Bore mm Mode...

Page 23: ...age the cable which may cause a current leakage electrical shock or re CAUTION The rope for suspending the pump during its installation must be of a thickness that accommodates the weight of the pump...

Page 24: ...connect the ground wire to a gas pipe water pipe lightning rod or telephone ground wire Improper grounding could cause electrical shock Connecting the Power Plug WARNING Before inserting the power plu...

Page 25: ...or The pump is equipped with a built in motor protector circle thermal protector If a current overload or overheating occurs under the symptoms given below the pump will stop automatically to protect...

Page 26: ...s accident involving injury 4 When using a generator as much as possible avoid operating the pump in conjunction with other types of equipment COUNTERMEASURE Interchange any two of the three wires des...

Page 27: ...the pump to the pipe and submerge it in water 4 Operate the pump for a short time 3 to 10 minutes and perform the following checks Using an AC ammeter clamp measure the operating current at the phase...

Page 28: ...Refer to section Oil Inspection and Change Procedures below for further detail Interval Monthly Daily Semi yearly Inspection Item Yearly Once every 2 to 5 years Measuring the operating current Measuri...

Page 29: ...and drain the oil completely Pour a speci ed volume of oil into the oil ller inlet Note The drained oil must be disposed of properly to prevent it from being released into the sewer or rivers The pack...

Page 30: ...the disassembly and reas sembly of the sealing portion i e mechanical seal and of the motor require a special ized facility including vacuum and electrical test equipment For these operations con tac...

Page 31: ...e liner im peller and pump casing after removing debris from them such as sand 2 Mount the v ring onto the outside of the shaft sleeve as shown in the drawing When doing so do not apply oil or other l...

Page 32: ...e block under the pump to prevent the pump from drawing in excess mud 1 Foreign matter is wedged in the impeller causing the motor protector to trip 2 The voltage is too low 3 A 50Hz unit is used at 6...

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