27
A
B
C
d
e
Remove jumper from
LWC-LWC and replace
LWC-LWC leads.
OK
Check water supply and
water level in system. Fill
system if low. Does visual/
audible alarm shut off with
system full?
OK
OK (From
Flowchart#3)
Yes
A
No
B
Remove jumper from
flow-flow and replace leads.
No
OK
C
Potentially bad flow switch.
Check wiring to flow switch
and consult flow switch
manufacturer if necessary.
Yes
Potentially bad low water
cut-off. Check wiring to
LWCO and consult LWCO
manufacturer if necessary.
No
Check pump and flow
rate of system. Pump may
require replacement. Does
visual/audible alarm shut off
with a new pump?
No
Yes
Yes
Dimensions
Inlet & Outlet
Pipe Size
Approximate
Shipping Wt.
A
B
C
d
e
14-5/8”
18-5/8 “
9-1/32”
14-3/8”
16-15/32”
1-1/4” NPT
70 lbs.
Does visual/audible alarm
shut off with jumper in
-
stalled?
Does visual/audible alarm
shut off with jumper installed?
Remove leads from
flow-flow and test with a
jumper.
TrouBLEsHooTing - fLoWcHArT#4
"AT" sEriEs BoiLEr dimEnsions