Cleveland 24-CSM Supplementary Manual page 11

PROBLEM:
Steam Coil
Boiler Over
Pressurizes
(15# Safety
valve opens)
Steam Coil Boiler Stops Producing Steam
Replace
operating
No
pressure
switch.
Is the temperature
the water board. It has
reached a temperature of
Boiler over
pressurizes
Does operating
Replace pressure switch
operating open at proper
No
pressure setting (check
switch service manual for
that steamer)?
Does the 15#
safety valve open
Replace the with little or no
No
safety valve. pressure on the
gauge after it has
been replaced?
Scale is blocking the
plumbing to the gauge.
Delime the boiler.
PROBLEM:
Boiler stops
steaming
Does the amber
light in the reset
switch come on?
Yes
sensitive dot
Does boiler have
(surrounded by a
Yes
yellow circle) on
Secondary Low
the water board
Water Cut Out?
white?
No
Will Boiler stop
making steam
Replace
with SLW CO
temporarily
over 180
degrees.
Does SLW CO
open and close as
float is moved up
Secondary Low
Water Cut Out
Replace steam
solenoid
Does the steam
solenoid stay open
Yes with operating
pressure switch
Does the pressure
in the gauge
No
continue to rise
with no voltage to
contactor coil?
Yes
Delime boiler
Yes
Are the probes
the optional
No covered with
scale?
Yes
Is high pressure
switch opening
Yes
prematurely?
bypassed?
Replace the
water board
No
Install delay
Yes timer for
and down? SLWCO
No
Replace
switch.
Yes
Replace steam
coil
open?
No Yes
Does steam coil
Yes
leak?
Replace the
weeper valve.
No
Replace high
Yes
pressure switch
No
No