Spirax Sarco BSK1 User Manual

3.530.5275.250
15
Even though valves are very robust, they can be damaged by inappropriate commands, neglected
maintenance or by being used for purposes other than their intended use. All maintenance and/or
repairsshouldbecarriedoutbyexpert,qualiedpersonnel.However,rstandforemost,itisalways
advisabletoconsultSpiraxSarco.
Symptom Possible cause Action
No ow
Valve closed. Open the valve.
Protective covers of the ange are
not removed.
Removetheangeprotections.
Reduced
owrate
Valve is not open enough. Open the valve.
Filter upstream the valve is dirty. Cleanorreplacethelter.
Pipeline is obstructed. Check and unclog the pipeline.
The stu󰀩ng
box is leaking
The stu󰀩ng box and/or the bellows
gasket are damaged for one or more
of the following reasons:
- material wear
- poor temperature resistance
-poorresistancetotheoperatinguid
- poor maintenance
Checkandtightenthestu󰀩ngboxand,
if necessary, add/replace graphite rings
to restore the tightness. Pay attention
nottoexcessivelyincreasethefriction
against the spindle. Immediately replace
the bellows.
Leakage between
seat and plug
assembly
Incorrect closure.
Close the valve by turning the wheel
anti-clockwise. Do not use additional
tools as levers.
Di󰀨erentialpressureistoohigh.
Use a plug with a balancing disc.
Checkthatthedirectionofowiscorrect.
Presence of impurities/solid particles
intheoperatinguid.
Thoroughly clean the gasket surfaces.
Fitalterupstreamthevalve.
Plug and/or seat have been damaged
for one or more of the following reasons:
- wear due to erosion/corrosion
- wear due to abrasion
-excessivemechanicalstressdueto
piping load and thermal stress.
Thoroughly clean the gasket surfaces.
If necessary replace the valve and/or
contactSpiraxSarco.
Leakage at
the body/cover
assembly
Gasket between the valve body and
cover is damaged for one or more of
the following reasons:
- wide temperature variations
- non-allowable pressure values
- poor temperature resistance
-poorresistancetotheoperatinguid
- poor maintenance
Replace the gasket between body
and cover.
Leaks at
connections
Flange bolts are not tightened enough.
Retightentheangebolts.
If necessary, renew the gaskets.
Breaking of
the connecting
anges.
Bolts have not been tightened evenly. Replace the valve.
8. Fault nding

Spirax Sarco BSK1 Specifications

General

Brand	Spirax Sarco
Model	BSK1
Category	Control Unit
Language	English