Blagdon X25 Посібник з експлуатації - Сторінка 7

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1. Parts List

TROUBLE SHOOTING GUIDE

NOTE :- Check all solutions before dismantling the pump.

PROBLEM

Pump will not start

Erratic flow

Pump strokes but will not

discharge

Fluid discharged from air

exhaust

Intermittent stroke rate

ATEX Certified units :- X2505AA.. These models are certified to :-

Non-electrical equipment for potentially explosive atmospheres : EN13463-1 : 2001, 'c' - Internal control of production.

Grounding the pump :-

Take action to prevent static sparking. Fire or

explosion can result, especially when handling

flammable liquids. The pump, piping, valves,

containers or other miscellaneous equipment

must be grounded.

The Atex approved units are supplied with a natural earth ground

cable. This cable is 2 meters in length and permanently connected

through a nut and bolt at the inner cover casting. The other end is free

to connect to the nearest available suitable point to provide a natural

earth ground. This must be done to reduce the risk of electro-static

sparking.

REF

No.

NUMBER

HG-CF-1186 Rev. C, 20/04/15

Air valve assembly malfunction/Siezure

Obstructed fluid line.

Obstructed diaphragm chamber.

Diaphragm failure causing fluid & excessive air to be

expelled through the exhaust.

Diaphragm seal failure.

Air valve system malfunction.

Air connected to exhaust.

Diaphragm failure on one side.

Valve ball not seating.

Suction leakage.

Diaphragm failure causing fluid & excessive air to be

expelled through the exhaust.

Diaphragm seal failure.

Air valve system malfunction.

Excessive suction lift.

Suction line leakage.

Valve ball not seating correctly or damaged.

Suction line or strainer clogged.

Diaphragm failure.

Diaphragm Failure.

Loose frontplate.

Over lubrication

Diaphragm shaft seal failure.

Air valve system malfunction.

Valve ball not seating / partially obstructed.

WARNING!

ADDITIONAL PARTS FOR ATEX CAT. 2 PUMPS

PART

SA10288

GROUNDING LEAD

SP467

ATEX I/D TAG

SP473

TIE-LOK TIE

CAUSE

II 2 GD c

DESCRIPTION

SOLUTION

Check carrier for freedom of movement. -

Clean, re-grease & replace.

Clean line or increase line size.

Remove obstruction.

Replace diaphragm.

Replace shaft seals.

Check all seals in valve chest assembly.

Re-connect to air inlet.

Replace diaphragm.

Check and remove obstruction.

Check and correct.

Replace diaphragm.

Replace shaft seals.

Check all seals in valve chest assembly.

Shorten suction line.

Check and correct.

Check and remove obstruction / replace.

Clear.

Replace diaphragm.

Re-Torque to manual specifications.

Shut-down pump. Remove air connection

into pump & introduce a small quantity of de-

greasing agent into air valve and replace

line. Run pump until clear.

Replace seals.

Check all seals in valve chest assembly.

Clear obstruction.

QTY

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