Electrical System; Electrical System Factory-Set - Riello Burners P 140 T/G Manuel D'entretien

4. ELECTRICAL SYSTEM

4.1 ELECTRICAL SYSTEM FACTORY-SET

P 140 - 200 - 300 T/G DIRECT MOTOR STARTING
P 300 - 450 T/G STAR-DELTA MOTOR STARTING
STAR-DELTA STARTER
(A)
(B)
(C)
42
KEY TO LAYOUTS (A) - (B)
CMV - Motor contactor
CO - Commutator
FR - Photocell
F1 - Protection against radio
interference
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
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
at: