T R O U B L E S H O O T I N G T R E E S
T
R O U B L E S H O O T I N G
T
R E E S
s #
/ - " ) 4 ( % 2 -
# 4 %
8 0 2 % 3 3
4
% # ( . ) # ! ,
3
% 2 6 ) # %
-
! . 5 ! ,
s $ n
4
N o C o n v e c t i o n H e a t ( 3 8 0 - 4 1 5 V , 3 P H )
Is N-6 oven temperature
probe below set point?
Is K-41 contactor coil
energized?
Is K-41 contactor closing?
N-6 must be below set
point
No
Yes
Yes
No
L1/A1 from RBH X4/412,
L2/A2 from N7 high limit
No
Yes
Replace K-41 contactor
L1/L2/L3 supplied from K-77
contactor 1/3/5
Is L1/L2/L3 voltage across
terminals 1/3/5 on K-41
contactor?
No
Is voltage across terminals
2/4/6 on K-41 contactor?
Replace K-41 contactor
Is voltage across 3-4
and 2-5 and 1-6 on E-41
convection elements?
Repair wiring between
F10/11/12 fuses and E-41
Is there L1/L2/L3 voltage
across terminal 1 at
F10/11/12 fuses?
Repair blown F10/11/12
fuse(s)
Is E-41 drawing current on
all legs?
No
Yes
Yes
No
No
Yes
Yes
Ohm out E-41 element
and replace if necessary
Convection cycle is
operating
No
Yes
Yes
No
Repair wiring between K-42
and F10/11/12
Is there L1/L2/L3 voltage
across terminal 2 at
F10/11/12 fuses?
Содержание 4-20 ESi
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