Legend For The Schematic Wiring Diagrams - Bitzer KT-230-2 Technical Information

7.6 Legend for the schematic wiring diagrams

Ab- Component
brev.
B1 Command for compressor start-up (release
signal from system controller)
B6 High-pressure transmitter
B7 Low-pressure transmitter
F1 Main fuse
F2 Compressor fuse
F3 Control fuse
F4 Oil monitoring: OLC-D1 or DP-1
F5 High-pressure switches
F13 Motor overload protective device (1st part
winding and Y/Δ)
F14 Motor overload protective device (2nd part
winding)
F17 Control transformer fuse
F30 Fuse of compressor module
H3 "Collective fault" light
K1 Contactor for 1st part winding (PW) or main
contactor (Y/Δ)
K2 Contactor for 2nd part winding" (PW) or delta
contactor (Y/Δ)
K3 Star contactor (Y/Δ)
K10 ''Compressor running" auxiliary relay, poten-
tial-free contact
K11 ''Compressor release'' auxiliary relay
M1 Compressor
M2 Auxiliary fan
N1 Frequency inverter (FI)
Q1 Main switch
R1 .. Temperature sensors in motor winding
R6
R7 Discharge gas temperature sensor
R8 Oil heater
S1 Control switch (on/off)
S2 CM-RC-01 reset
T1 Control transformer (example for 230 V)
Y1 "Start unloading (SU)" solenoid valve
Y3-1 Solenoid valve for "1st capacity regulator
CRII"
Y3-2 Solenoid valve for "2nd capacity regulator
CRII"
Y3-3 Solenoid valve for "3rd Power regulator
CRII" (only for 6-cylinder compressors)
16
Ab- Component
brev.
Y5 RI injection valve
Tab. 3: Components of the principle circuit diagrams
KT-230-2