Riello P 140 T/G, Installation, Use And Maintenance Instructions

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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)
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