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Start up – Viking Pump TSM000: General Information User Manual

Page 5

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SECTION TSM 000

ISSUE

I

PAGE 5 OF 8

figurE 10

figurE 11

8. STrAiNEr - It is always good practice to consider a strainer on

the suction side of a positive displacement pump The strainer

will keep foreign objects from going into the pump; without a

strainer some would go through; others would cause a jammed

pump, a broken part, or a torn up drive The strainer basket

mesh or perforation size should be big enough so that it does

not cause excessive pressure drop, but it should be fine enough

to protect the pump When in doubt as to the proper size, check

with the manufacturer, giving him pipe size, flow rate, and

viscosity involved Provision should be made for cleaning the

strainer If the pump operates continuously, a bypass should be

built around the strainer or two strainers should be put in parallel

with proper valving so they can be isolated for cleaning Use of

a strainer is particularly important at start up to help clean the

system of weld beads, pipe scale, and other foreign objects For

additional information,

refer to TSM640.

9. If the pump is not equipped with a relief valve, consideration

should be given to mounting one in the discharge line See

discussion on relief valves under

STArT up.

10.

The pump should not be used to support the piping The weight

of the pipe should be carried by hangers, supports, stands,

etc

11. When fastening the piping to the pump it should not be

necessary to impose any strain on the pump casing “Springing”

or “drawing” the piping up to the pump will cause distortion,

possible misalignment, and probable rapid wear of the pump

Do not use the pump to correct errors in piping layout or

assembly

STArT up

before pushing the “start” button, check the following:
1.

Are there vacuum and pressure gauges on or near the pump?

These gauges are the quickest and most accurate way of finding

out what is happening in the pump

2.

Check alignment - See suggestions under “installation -

Alignment” in this manual

3.

Check piping to be sure there is no strain on the pump casing

4. Rotate the pump shaft by hand to be sure it turns freely MAkE

SurE ThE puMp drivEr iS LOCkEd OuT Or CANNOT

bE ENErgiZEd bEfOrE dOiNg ThiS.

5.

Jog motor to be sure it is turning in the right direction; see

discussion on pump rotation under

“installation - general

Comments” item 4 in this manual

6. Check any relief valves to be sure they are installed correctly See

discussion on relief valves under

“installation - general”.

7.

Check suction piping to be sure (a) it is all connected and tight,

(b) valves are open, and (c) end of pipe is below liquid level

8.

Check discharge piping to be sure (a) it is connected and tight,

(b) valves are open, and (c) there is a place for the liquid to

go

9. Lubricate any grease fitting on the pump using a good, general

purpose #2 ball bearing grease Check any gear reducer, motor,

coupling, etc for instructions and lubricate as recommended

See Engineering Service bulletin ESb-515.

10.

For packed pumps, loosen packing gland nuts so gland can be

moved slightly by hand Adjust gland to reduce leakage only

after pump has run long enough to reach constant temperature

Packing should weep a little to keep it cool and lubricated

11.

Do not use the Viking pump to flush, pressure test or prove the

system with water Either remove the pump or run piping around

it while flushing or testing Pumping water, dirty or otherwise,

can do more damage in a few minutes than months of normal

service

12.

Check to be sure all guards are in place

12.

All joints of the piping system should be tight; pipe sealer will

help assure leak-free threaded joints Leaks in the suction line

permitting air to be drawn in may cause a noisy pump, or a

reduction in capacity

13. ALigNMENT - Check the alignment of the drive after the piping

is hooked up As a final check on pump alignment remove the

head of the pump and with a feeler gauge determine if there

is clearance all the way around between the rotor and casing

Because of manufacturing tolerances, bushing clearances,

etc , the rotor may not be centered in the casing, but it should

not drag; dragging would indicate unit misalignment or casing

distortion from piping strain Making this check is most desirable

on installations involving Q, M and N size standard duty

pumps

14.

The auxiliary piping hooked to jackets, glands, etc for heating,

cooling, quenching, or for other purposes should receive the

same attention as the piping handling the liquid pumped

15.

Provide a pressure relief device in any part of a pump and piping

system that can be valved off and, thus, completely isolated

This is particularly important:
a) When handling a cold liquid such as refrigeration ammonia

that can warm up to ambient temperatures when the pump

is shut off or

b)

When handling a liquid such as asphalt or molasses that

has to be heated before it can be pumped

The rise in temperature causes the liquid to expand; if there is

no provision for pressure relief in the closed off section, there is

a chance that the pump or piping will rupture

GO AROUND THE

OBSTRUCTION ON

THE HORIZONTAL

OBSTRUCTION

dO ThiS

NOT ThiS

OBSTRUCTION

kEEp LONg

hOriZONTAL LiNE

NEAr Liquid LEvEL

ThiS

NOT ThiS