Flowserve BK 27N - Manual (Page 12)

2
Operation
Certain operating conditions make servicing of the BK 27N necessary (see section Maintenance).
BK 27N
. Take heed of the note “Danger” on page 4.
2. Undo bolts
J. Remove cover C from the body G.
. Remove and clean regulator D.
4. Remove and clean strainer E.
5. Clean body G, internals and all seating surfaces.
6. Replace regulator D in case of visible signs of wear or damage.
7. Apply heat-resistant lubricant to all threads and seating surfaces (use for instance WINIX ® 250).
8. Insert new gasket F.
9. Insert strainer E.
0. Screw in regulator D and tighten with a torque of 350 Nm.
. Put cover C onto the body G. Tighten bolts J and nuts I alternately and in several steps
to a torque of 90 Nm.
Clean / replace bimetallic regulator and strainer
Maintenance
GESTRA steam traps type BK 27N do not require any special maintenance. However, if used in new
installations which have not been rinsed it may be necessary to check and clean the trap.
You can check the steam trap BK 27N for steam loss during operation using the ultrasonic measuring
unit VAPOPHONE ® or the test unit TRAPtest ® .
Should you detect any loss of live steam clean the trap and/or replace the regulator.
Check steam trap
n
Combination spanner 2 A.F., DIN , form B
n
Combination spanner 8 A.F., DIN , form B
n
Combination spanner 9 A.F., DIN , form B
n
Open-end spanner 0 A.F., DIN 0, ISO 8
n
Torque spanner 20 – 20 Nm, DIN ISO 6789
Tools