Blagdon X25 Manuel d'utilisation - Page 9

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1. Parts List

EXHAUST SAFETY WHEN PUMPING HAZARDOUS LIQUIDS

In the event of diaphragm rupture, pumped material may enter the air end of the pump, and be discharged into the atmosphere. If pumping

a product which is hazardous or toxic, the air exhaust must be piped to an appropriate area for safe disposition.

Suction Lift Installation

Exhaust Safety :-

When a diaphragm fails during operation, pumped liquid can enter and contaminate the air side of the pump. If diaphragm failure is not

severe, i.e. a small split or hole, then the pump can continue to run, with air being forced into the product being pumped. If however the

failure is more serious, then the pump may stop, with fluid or fumes being expelled through the exhaust. Under these conditions it is

recommended that the exhaust is piped away to a safe area. In standard suction lift conditions this can simply be done by piping from the

exhaust connection to a safe area. Multiple installations can be piped to a common connection, then to a safe area. In flooded suction

conditions the exhaust must be taken to a point higher than the fluid level to prevent any siphoning away. In submerged conditions ensure

exhaust is piped away above fluid level.

In all conditions ensure exhaust outlet is not expelling across a non-conductive surface. The exhaust must not be placed less than 100mm

from any non-conductive surface, as this may generate a propagating brush discharge resulting in a possible ignition source.

In situations where the temperature of the fluid to be pumped is likely to exceed 100°C, a high temperature pump

code must be specified. This is signified using an 'X' in the last part of the pump code as shown.

"XTS" in place of "TTS".

This indicates the following specification amendments :-

All seals and o-rings will be changed from Buna-N to Viton and back-up diaphragms and any bump-stops will be

changed to Viton.

See table below for parts effected :- (refer to main table for quantities / pump)

These items are available in recommended spares kit :- ASK2505HT

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

HIGH TEMPERATURE INSTRUCTIONS

HIGH TEMPERATURE SPECIFICATION

REF. NO

DESCRIPTION

DIA. SHAFT

SEAL

MATERIAL

VITON

G536

WARNING!

Flooded Suction Installation

DIAPHRAGM

O-RING

SHAFT BUSH

40-194

G508

G533

Submerged Installation

O-RING

SUPPORT

DIAPHRAGM

G509

1A039

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