53
4. ELECTRICAL SYSTEM
4.1 ELECTRICAL SYSTEM FACTORY-SET
KEY TO LAYOUTS (A) - (B)
CMV
- Motor contactor
CO
- Commutator
FR
- Photocell
h1,2,3 - 1., 2., 3. stage hourconters
L1,2,3 - 1., 2., 3. stage lamps
L4
- Lock-out motor lamp
MB
- Burner terminal strip
MV
- Fan motor
RT
- Thermal relay
TA
- Ignition transformer
TB
- Burner ground (earth)
connection
VS
- Safety solenoid valve
V1,2,3 - 1., 2., 3. stage solenoid valves
KEY TO LAYOUT (C)
F1
- Power line fuses
F2
- Control devices fuse
F3
- Thermal relay - Factory calibra-
tion at:
P 300 T/G: 10.2 A for 400 V
17.6 A for 230 V
P 450 T/G: 16.7 A for 400 V
29 A for 230 V
KL1 - Line Contact-maker
KS1 - Star Contact-maker
KST1 - Timer relay for switching from
star to delta (factory calibration
at 10 s.)
KT1 - Delta Contact-maker
MA
- Starter terminal strip
Q1
- Disconnecting switch with
interlock
20049884
P 300 - 450 T/G
STAR-DELTA MOTOR STARTING
P 140 - 200 - 300 T/G
DIRECT MOTOR STARTING
STAR-DELTA STARTER
(A)
(B)
(C)
D2567
D2569
Summary of Contents for P 140 T/G
Page 16: ......