Commissioning, Operation – Flowserve BA46 User Manual

Page 27

Commissioning

– continued –

Continuous blowdown valves BA 46, BA 47 without actuator

The amount of boiler blowdown dictated by the operating conditions can be adjusted by means of the

control lever on the continuous blowdown valve. For more information please refer to the capacity charts

on pages 3 to 0.

Continuous blowdown valves BAE 46, BAE 47 with actuator

Use the control equipment KS 90, LRR -40, LRR -5 or LRR -6 to set the required TDS level of the

boiler water. Please compare the resulting valve positions (see scale on the control lever) with the values

indicated in the capacity charts on page 3 to 0.

Operation

The control lever of the continuous blowdown valve and the coupling of the actuator

become hot during operation. This presents the risk of severe burns to hands and arms

when touching the control lever or the coupling. Do not operate the equipment unless you

are wearing thermally insulated and temperature resistant safety gloves.

Danger

Make sure that the flanged connections of the BA 46, BA 47, BAE 46, BAE 47 are securely tightened and
not leaking. Retighten the stuffing box

if there is a leak in this area.

BA 46, BA 47, BAE 46, BAE 47

Attention

As the stuffing box screws are tightened the break-out force and the frictional forces

of the nozzle steam are increased.

The break-out force and the frictional forces of the nozzle steam must not exceed the

max. allowable operating forces of the actuator.

Excessive fastening of the stuffing box screws impairs the correct functioning of the

continuous blowdown valve and can cause jamming of the nozzle stem.

If the nozzle stem is jammed, the continuous blowdown valve can no longer open,

control or close.