Mc-techgroup MP47_D Operator's manual Manual de usuario descargar pdf (Pagina 20)

Gas sampling and gas conditioning technology 6-1.1.1-ME

For recommended spare parts please see section 20.

19 TROUBLE SHOOTING

Before working on the pump isolate the power supply securely, then check that the lines are not live.

The following tips for fault-finding are best employed in the sequence shown.

Problem/Indication

Possible cause

Check/Action

Pump produces no

flow

No main supply

Check power supply; Check plug for correct

fit

Connections or lines are

blocked

Remove blockade

An external valve is closed or

a filter is blocked

Open valve or clean dirty/blocked filter

Liquid (condensate) has col-

lected in the pump head

Let the pump for a few minutes pumping air;

Flow, pressure or

vakuum too low

Diaphragm or valves are

weared out

Change diaphragm or/and valves

Compare the actual perfor

mance with the figures in

the technical data

The pump is not designed for this condition

There is pressure on the

pressure side and at the same

time vacuum or a pressure

above atmospheric on the

suction side

The pump is not designed for this condition

The cross-section of the

pneumatic lines or connected

components is too small, or

they are restricted

To measure the performance, disconnect the

pump from the system (smaller diameter

tubing or a valve can significantly affect

performance)

A leak at a connector, in a

diaphragm/valve plate is

damaged or pump heads

dirty

Insulate the leak, tighten the screws, clean

or exchange dirty parts

NOTE!

If the pump does not operate properly and you cannot find any of the above

mentioned faults, send it back to M&C.

If you have been handling dangerous or highly aggressive gases please

clean the pump before dispatch.

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Mc-techgroup MP47_D Operator's manual Manual de usuario Pagina 20

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