Alto-Shaam CT EXPRESS 4 10ESi, Техническое и сервисное руководство

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T R O U B L E S H O O T I N G T R E E S
MN-36008 (Rev. 8) 01/16 • COMBITHERM CT EXPRESS • D-19
S i n g l e S p e e d M o t o r - N o M o t o r O p e r a t i o n
( w i t h m o t o r p r o t e c t i o n s w i t c h )
Is there L1 power
supplied to terminal 21 of
K-52 contactor?
Is there L1 power at
terminal 22 of K-52 contactor?
L1 supplied to terminal
21 from RBH/X3/300
No
Yes
Yes
No
Yes
Is K-52 coil energized
and engaged?
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
Repair wiring between
K-52/22 and F-51/2
Repair wiring between
F-51/43 and motor
L2/43 supplied from N-7
High limit
Repair motor wiring
Ohm out motor and replace
if necessary
Is L1 power at terminal 2
of F-51?
Is L1 power at terminal 5
of F-51?
Is L1 power at blue wire
on motor?
Is L2 power at terminal
43 of F-51?
Is there voltage across
blue/white wires at motor?
Is motor running?
Motor is operating correctly
Replace faulty K-52
contactor
No
Yes
Unit is in low speed
operation
Repair/replace F-51 MPS
Yes
No
Is F-51 motor
protection switch (MPS) in
the start position?
Reset switch and
test operation
Is L2 power at white wire
on motor?
Repair wiring between
F-51/5 and motor