Quincy Compressor QED 650 Instruction And Maintenance Manual page 29

Ref.
S1
S2
T1
TT89
TT90
Y1
1X0
1X1
1X3
1X5
1X6
1X7
(1)
(2)
(3)
Dryer protection
The unit is provided with a phase sequence relay (K25).
The high-pressure shut-down switch (S1) stops the compressor motor when the pressure in the refrigerant
circuit reaches the upper set-point of the switch.
After tripping:
• The switch must be reset manually by pressing its reset knob and by accessing the protection menu, on
the Air Logic Controller, and pressing the Enter key.
The compressor motor has a built-in thermic protection. If the thermic protection trips, the compressor motor
will be stopped. The compressor will restart when the motor windings have cooled down, which may take up
to 3 hours.
28
Description
High-pressure switch
Flow switch
Transformer, control voltage
Temperature sensor, freeze protection
Temperature sensor, dryer LAT block
Solenoid valve
Terminal strip, supply
Terminal strip, motor
Terminal strip, earthing
Terminal strip, < or = 24 VAC
Terminal strip, < or = 24 VDC
Terminal strip, voltage-free contacts
Customer installation
For connection, see transformer label
Voltage-free contacts
Instruction book
2920 1818 00