5.3. Legend for the schematic
diagrams
5.4. Connections
Legend
B1
Control unit
B2
Control unit of capacity regulation (option)
F1
Main fuse
F2
Compressor fuse
F3
Control circuit fuse
F4
Oil level switch
F5
High pressure cut-out
F6
Low pressure cut-out
F12
Fuse of crank case heater
F13/F14
Thermal overload motor PW1 / PW2
H1
Signal light “Compressor over temperature fault”
H2
Signal light “Oil supply fault”
K1/K2
Motor contactors PW1 / PW2
K1T/K2T
Time relays “part winding” / pause time
M1
Compressor
Q1
Main switch
R1..3/R1..R6
PTC sensors in motor windings
R7
PTC sensor in cylinder head/discharge gas tempera-
ture sensor (option)
R8
Crank case heater (option)
S1/S2/S3
Control switch
Y1
Solenoid valve “start unloading” (option)
Y2
Solenoid valve “liquid line”
Y3
Solenoid valve “capacity regulation” (option)
View colour
Function
Brown
L; Phase
Blue
N; Neutral
Grey
C; Common signal
Orange
NO; Normal open
Pink
NC; Normal closed
Violet (only OLC-K1)
D1; Compressor running
Technical manual
OLC-D1, OLC-K1
Page 9
