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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)
F
- Power line fuses
F1 - Control devices fuse
MA - Starter terminal strip
K1 - Line Contact-maker
K2 - Star Contact-maker
K3 - Delta Contact-maker
K4 - Timer relay for switching from star
to delta (factory calibration at
10 s.)
RT - Thermal relay - Factory calibration
at:
P 300 T/G:
9 A for 400 V
18 A for 230 V
P 450 T/G: 14 A for 400 V
24 A for 230 V
SB - Disconnecting switch with
interlock
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
