Bcx14G Float Switch Troubleshooting From Jan 2007 To Sept 2010 - Blodgett BCX14G Troubleshooting Manual

BCX14G
BCX14G FLOAT SWITCH TROUBLESHOOTING
J8
J8-1
J8-2
J8-3
IFB
Relay Board
J8-4
J8-5
J8-6
The Flats are normally closed
and open when the boiler is
full.
+24Dcv should always be
applied to the float wires R-15
that activates the fill solenoid's
relay at the IFB which applies a
24Dcv_Rtn_L to complete the
power circuit for the water fill
solenoid's till the float opens.
Troubleshooting the floats drain
the boiler with the flush switch
at the IFB and check both floats
to verify normally closed and
after boiler fill up floats open.
+24Dcv_H
24Dcv_Rtn
24Dcv_Rtn_L
FIGURE 8
98
SW3
HI_Lvl_Float_Sw
o o
V-3
o o
BL-6
SW2
Lo_Lvl_Float_Sw
24Dcv_Rtn_L
V-5
Fill_Solenoid_A
BL-10
Fill_Solenoid_B
R15
R15
+24Dcv_H
R-14
R-14