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SELF-PRIMING CENTRIFUGAL PUMPS

OM--04760

PAGE A -- 1

SAFETY

SAFETY - SECTION A

This information applies to G-R Self-

Priming Centrifugal pumps. These

pumps are available as basic, pedestal-

mounted models or as close-coupled

models driven by either an electric mo-

tor, gasoline or diesel engine. Refer to

the manual accompanying the power

source before attempting to begin oper-

ation.

This manual will alert personnel to

known procedures which require spe-

cial attention, to those which could

damage equipment, and to those which

could be dangerous to personnel. How-

ever, this manual cannot possibly antici-

pate and provide detailed instructions

and precautions for every situation that

might occur during maintenance of the

unit. Therefore, it is the responsibility of

the owner/maintenance personnel to

ensure that only safe, established main-

tenance procedures are used, and that

any procedures not addressed in this

manual are performed only after estab-

lishing that neither personal safety nor

pump integrity are compromised by

such practices.
In addition to this manual, see the sepa-

rate literature covering maintenance

and repair, pump parts, and any optional

equipment shipped with the pump.

Before attempting to open or service the

pump:

1. Familiarize yourself with this man-

ual.

2. Disconnect or shut down the pow-

er source and take necessary pre-

cautions to ensure that the pump

will remain inoperative.

3. Allow the pump to completely cool

if overheated.

4. Check the temperature before

opening any covers, plates, or

plugs.

5. Close the suction and discharge

valves.

6. Vent the pump slowly and cau-

tiously.

7. Drain the pump.

Do not attempt to pump any liquids the

pump has not been designed for, and

which may damage the pump or endan-

ger personnel as a result of pump fail-

ure. Consult the factory to determine

compatibility between the pump and liq-

uid.

Use lifting and moving equipment in

good repair and with adequate capacity

to prevent injuries to personnel or dam-

age to equipment. Suction and dis-

charge hoses and piping must be re-

moved from the pump before lifting.

After the pump has been positioned,

make certain that the pump and all pip-

ing or hose connections are tight, prop-

erly supported and secure before oper-

ation.

Do not operate the pump against a

closed discharge valve for long periods

of time. If operated against a closed dis-

charge valve, pump components will

deteriorate, and the liquid could come

Содержание SELF-PRIMING CENTRIFUGAL PUMPS

Страница 1: ...04760 December 2 1998 Rev A 11 20 03 THE GORMAN RUPP COMPANY D MANSFIELD OHIO GORMAN RUPP OF CANADA LIMITED D ST THOMAS ONTARIO CANADA Printed in U S A eCopyright by the Gorman Rupp Company SELF PRIM...

Страница 2: ...ot possibly provide detailed in structions and precautions for every aspect of each specific application Therefore it is the re sponsibility of the owner installer of the pump to ensure that applicati...

Страница 3: ...following are used to alert personnel to procedures which require special attention to those which could damage equipment and to those which could be dangerous to personnel Immediate hazards which WIL...

Страница 4: ...intenance and repair pump parts and any optional equipment shipped with the pump Before attempting to open or service the pump 1 Familiarize yourself with this man ual 2 Disconnect or shut down the po...

Страница 5: ...clothing fingers or tools causing severe injury to person nel If the pump is powered by an electric motor do not operate a non explosion proof motor in an explosive atmo sphere An explosion which may...

Страница 6: ...er with the engine governor to gain more power The governor esta blishes safe operating limits that should not be exceeded The maximum contin uous operating speed for the pump is shown on the performa...

Страница 7: ...refully read all tags decals and markings on the pump assembly and perform all duties indicated Note that the pump shaft rotates in the required direction d Check levels and lubricate as necessary Re...

Страница 8: ...OM 04760 SELF PRIMING CENTRIFUGAL PUMPS PAGE B 2 INSTALLATION...

Страница 9: ...acturer s rec ommendations when selecting and applying the pipe dope The pipe dope should be compatible with the liquid being pumped Suction Lines In Sumps If a single suction line is installed in a s...

Страница 10: ...OM 04760 SELF PRIMING CENTRIFUGAL PUMPS PAGE B 4 INSTALLATION...

Страница 11: ...it your application If the installation involves a flooded suction such as a below ground lift station a pipe union and manu al shut off valve may be installed in the bleed line to allow service of th...

Страница 12: ...in the diaphragm chamber settle to the bottom and are flushed out during the next priming cycle NOTE The valve will remain open if the pump does not reach its designed capacity or head Valve closing...

Страница 13: ...SELF PRIMING CENTRIFUGAL PUMPS OM 04760 PAGE B 7 INSTALLATION...

Страница 14: ...very 90 degrees The coupling is in alignment when the hubs are the same distance apart at all points see Figure 6 Figure 6 Aligning Non Spider Type Couplings Check parallel adjustment by laying a stra...

Страница 15: ...to change direction If rotation is incorrect on a single phase motor consult the lit erature supplied with the motor for specific instruc tions The electrical power used to operate the pump is high e...

Страница 16: ...p will destroy the seal assembly Add liquid to the pump casing when 1 The pump is being put into service for the first time 2 The pump has not been used for a consider able length of time 3 The liquid...

Страница 17: ...o prime within five minutes stop it and check the suction line for leaks After the pump has been primed partially close the discharge line throttling valve in order to fill the line slowly and guard a...

Страница 18: ...ure must be reduced to 10 p s i Pump Vacuum Check With the pump inoperative install a vacuum gauge in the system using pipe dope on the threads Block the suction line and start the pump At oper ating...

Страница 19: ...Repair manual Bearing overheating can also be caused by shaft misalignment and or ex cessive vibration When pumps are first started the bearings may seem to run at temperatures above normal Con tinued...

Страница 20: ...of oil Grease Lubricated Bearings Bearing housings are fully lubricated when shipped from the factory Under normalconditions add No 0 lithium base grease from a grease gun through the grease fitting...

Страница 21: ...epairs or alterations have been made un less authorized by Gorman Rupp No warranty is made in respect to engines motors or trade ac cessories such being subject to warranties of their respective manuf...

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