Flowserve BK 27N - Manual (Page 11)


Commissioning
Make sure that the flanged connections of the BK 27N are permanently bolted and tight.
BK 27N
Attention
The equipment is under pressure during commissioning and operation. When loosening
the sealing plug A in order to chance the settings of the regulator, hot water or steam
will escape. The force of the flowing steam will throw the sealing plug out.
This presents the risk of severe burns and scalds to the whole body. The equipment is hot
during operation. This presents the risk of severe burns to hands and arms.
Always wear industrial gloves when changing the regulator settings. Installation and
maintenance work should only be carried out when the system is depressurised (zero
bar). Isolate the equipment from both upstream and downstream pressure.
The default factory of the bimetallic regulator of the BK 27N ensures steam-tight shut-off and the
discharge of condensate with virtually no banking up.
Settings for a larger amount of undercooling (banking-up of condensate):
. Depressurise the steam trap and wait until it has cooled down to room temperature (20 °C).
2. Unscrew sealing plug
A.
. Use a screwdriver to turn the nozzle stem of the bimetallic regulator D to the right.
¼ turn corresponds to approx. 8K change in temperature. Max. ½ turns to the right starting from
factory setting are possible.
4. Tighten sealing plug A with a torque of 40 Nm.
Settings for controlled steam flow
. Depressurise the steam trap and wait until it has cooled down to room temperature (20 °C).
2. Unscrew sealing plug
A.
. Use a screwdriver to turn the nozzle stem of the bimetallic regulator D to the left.
¼ turn corresponds to approx. 8K change in temperature. Max. ½ turns to the left starting from
factory setting are possible.
4. Tighten sealing plug A with a torque of 40 Nm.
Setting the regulator (undercooling, controlled steam flow)
. Depressurise the steam trap and wait until it has cooled down to room temperature (20 °C).
2. Unscrew sealing plug
A.
. Use a screwdriver to turn the nozzle stem of the bimetallic regulator D to the right until it hits
the stop. Then turn it  ¼ to the left.
4. Tighten sealing plug A with a torque of 40 Nm.
Restoring factory settings