Cleveland 24-CSM Supplementary Manual page 9

PROBLEM:
Steam Coil Boiler
won't build
pressure
See
Steamer won't
fill.
Replace the
water board
No
Is there 120 VAC
between terminals
Repair
L2 and HTR on the
or Replace the
Yes
water board with a
probe circuit.
jumper between
Low and C?
Replace the
latching relay
Boiler won't build
pressure
Is the red light on
in the power No
switch?
Yes
Is there water in
No
the sight glass?
Yes
Is the Amber light
on in the reset
switch?
Yes
No
Is there 120 VAC
between
No terminals L2 and
HTR on the water
board?
Yes
Is there 120 VAC
No to terminal 6 on
the latching relay?
Yes
Replace the
Reset switch
Replace the
steam trap for No
the coil
Replace the
steam trap for Yes
the boiler.
Is there power to
No
the steamer?
Yes
Replace the
on/off rocker
switch
the Amber light go
Replace
the high limit
Yes
pressure
switch
After depressing
No
the reset switch,
does the Amber
light go off?
Yes
Is there 120 VAC
to the coilof the
Is there 120 VAC steam solenoid
to the coil of the No with the operating
steam solenoid? pressure switch
temporarily
bypassed?
Yes
Does the Steam Replace the
No
solenoid open? steam solenoid
Yes
Is there an steam
Supply steam
No
at the steam coil?
to the steamer.
Yes
Is the steam trap
for Incoming
steam opening to
remove air and
water from coil?
Yes
Is there a lot of
No
steam coming out
the drain?
Connect power
to steamer.
Replace the
latching relay.
With a jumper
With the High
from terminal 5 to
Limit pressure
9 on the latching
switch
relay, does the
temporarily
Amber light go out
bypassed, does No
with the reset
switch depressed?
off when the reset
switch is
depressed?
With the SLW CO
No
temporarily
Does this boiler
bypassed, does
have the optional
the Amber light go
Yes
Secondary Low
off with the reset
Water Cut Out?
switch depressed?
Replace the
SLWCO switch
Replace the
No
latching relay
Yes
Replace
the operating
pressure
switch
With
Elements heating
the water, the
Boiler is making
steam. Check for
leaks.
Yes
No
switch
Yes