Xylem 9100 Series Base Mounted Centrifugal Fire Pumps AC User Manual download pdf (Page 7)

INTRODUCTION

1. PURPOSE OF MANUAL

This manual is furnished to acquaint you with

some of the practical ways to install, operate,

and maintain this pump. Read it completely

before doing any work on your unit and keep

it handy for future reference.

Equipment cannot operate well without

proper care. To keep this unit at top

efficiency, follow the recommended

installation and servicing procedures outlined

in this manual.

2. WARRANTY

Refer to your local representative for warranty

coverage.

3. PUMP IDENTIFICATION

All pumps are designated by Serial Number,

Model Number, and Size. This information is

stamped on an identification plate which is

mounted on the pump.

4. INSTALLATION

5. RECEIVING PUMP

Check pump for shortages and damage

immediately upon arrival. (An absolute must.)

Prompt reporting to the carrier’s agent with

notations made on the freight bill, will

expedite satisfactory adjustment by the

carrier.

Pumps and drivers normally are shipped from

the factory mounted and painted with primer

and one finish coat. Couplings may be either

completely assembled or have the coupling

hubs mounted on the shafts and the

connecting members removed. When the

connecting members are removed, they will

be packaged in a separate container and

shipped with the pump or attached to the

base plate.

Shafts are in alignment when the unit is

shipped; however, due to shipping, the

pumps may arrive misaligned and, therefore,

alignment must be established during

installation. AC Fire Pump Systems has

determined that proper and correct alignment

can only be made by accepted erection

practices. Refer to the following paragraphs

on “Foundation,” “Base Plate Setting,”

“Grouting Procedure,” “Alignment Procedure”

and “Doweling.”

6. TEMPORARY STORAGE

If the pump is not to be installed and operated

soon after arrival, store it in a clean, dry place

having slow, moderate changes in ambient

temperature. Rotate the shaft periodically to

coat the bearings with lubricant and to retard

oxidation, corrosion, and to reduce the

possibility of false brinelling of the bearings.

7. LOCATION

The pump should be installed as near the

suction supply as possible, but no less than

five suction diameters (refer to page 15,

suction and discharge piping section) with the

shortest and most direct suction pipe

practical. The total dynamic suction lift (static

lift plus friction losses in suction line) should

not exceed the limits for which the pump was

sold.

The pump must be primed before starting.

Whenever possible, the pump should be

located below the fluid level to facilitate

priming and assure a steady flow of liquid.

This condition provides a positive suction

head on the pump. It is also possible to prime

the pump by pressurizing the suction vessel.

When installing the pump, consider its

location in relation to the system to assure

that sufficient Net Positive Suction Head

(NPSH) at pump suction is provided.

Available NPSH must always equal or exceed

the required NPSH of the pump.

The pump should be installed with sufficient

accessibility for inspection and maintenance.

A clear space with ample head room should

be allowed for the use of an overhead crane

or hoist sufficiently strong to lift the unit.

NOTE: Allow sufficient space to be able to

dismantle pump without disturbing the pump

inlet and discharge piping.

Select a dry place above the floor level

wherever possible. Take care to prevent pump

from freezing during cold weather when not in

operation. Should the possibility of freezing

exist during a shut-down period, the pump

should be completely drained, and all passages

and pockets where liquid might collect should

be blown out with compressed air.

Make sure there is a suitable power source

available for the pump driver. If motor driven,

electrical characteristics should be identical to

those shown on motor data plate.

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Xylem 9100 Series Base Mounted Centrifugal Fire Pumps AC User Manual Page 7

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