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draught (it might occur smoke
from blowing fan or the lover
door
Sudden
temperature
and pressure
rise
installation valves closed
open the valves
pressure vessel frozen
heat the pressure vessel
Water licking
out of
boiler
so called boiler’s sweating",
this is natural process caused
by temperature difference in
boiler
during boiler’s start-up and after
each standby "heat the boiler" e.g.
burn it up to 70°C and keep that
temperature for several hours
Inappropriate
flame picture
on the
combustion
chamber
red, smoking fire indicating to
low air supply
provide more air
Pale, white fire indicates to
high air supply
provide less air
very shallow fire in retort
indicating, that percentage of
coal
volume
is
too
low
comparing to the amount of air
delivered
provide more coal or less air
reducing blow-in power
discarding
glowing
not
completely burned off pieces of
coal
reduce the set of fuel supply by 5
– 10% or increase blow in power.
Wait 20-30 minutes until such
changes come to effect, what
should be deflected in change of
fire state
In order to ensure the failure-free and safe operation (to maximum extent) the
controller of boiler is provided with many protection functions. If faulty status is
discovered, the alarm is launched (acoustic signal), and a message is shown on
display (depending on controller version).
THERMAL PROTECTION
The controller is equipped with safety temperature limiter, preserving the boiler against
overheating
(boiling water in installation), if the controller is damaged. Temperature
limiter makes up mechanical protection measure, which is bimetallic sensor (placed
at the boiler water temperature sensor) cutting off power supply to blow-in fan and
fuel feeder, if temperature is higher than 90°C (pump still working).
TEMEPERATURE PROTECTION
The controller is equipped with additional temperature protection (electronic
one), for the case of bimetallic sensor is faulty. If temperature of 95°C is
7. PROTECTION MEANS
