CIAT Magister 2 Series, Installation, Operation, Commissioning, Maintenance

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
Display:
If this fault causes more than 5
shutdowns in 24 hours:
- Corresponding circuit shut off.
- Fault output off. - Circuit x HP fault relay on optional board in On position.
- Circuit LED on console lit
steady.

Display:

Saved in fault memory:

Resetting:
- If the number of faults in 24 hours
≤ 5 → the fault is acknowledged after 30 minutes.
- If the number of faults in 24 hours > 5
→ the fault is acknowledged if
Reset is pressed on the console
15.4 Discharge temperature fault, circuit 1 or 2

Operation:
- Information is sent by the sensors placed on the discharge pipes (one per control stage).
- The maximum discharge temperature limit is set by parameter P51 + 1 K.
If this fault causes fewer than 5 shutdowns in 24 hours:
- Corresponding circuit shut off.
- 30 min. time delay (in seconds in test mode)
- Fault output off
- Circuit x discharge temperature fault relay on optional board in
Off position
- Circuit fault LED on console
flashes.

Display:
If this fault causes more than 5
shutdowns in 24 hours:
- Corresponding circuit shut off.
- Fault output on
- Circuit x discharge temperature fault relay on optional board in On position
- Circuit fault LED on console lit
steady

Display:

Saved in fault memory:

Resetting:
- If the number of faults in 24 hours
≤ 5 → the fault is acknowledged after 30 minutes.
- If the number of faults in 24 hours > 5
→ the fault is acknowledged if DISCH.T. ≤ P51 – 15°C and
Reset is pressed on the console.
15.5 LP fault on circuit 1 or 2

Operation:
- If the pressure measured by the LP pressure sensor is
≤ P55, the controller records an LP fault.
- This input is checked 2 minutes after the first stage on the circuit is turned on. It is also checked when power is shut off but ignored both
during and 2 minutes after defrosting.
- Both of these time delays are maintained in test mode.
If this fault causes fewer than 3 shutdowns in 24 hours:
- Corresponding circuit shut off.
- Fault output off - Circuit x LP fault relay on optional board in Off position
- Circuit fault LED on console
flashes

Display:
If this fault causes more than 3 shutdowns in 24 hours:
- Corresponding circuit shut off.
- Fault output on - Circuit x LP fault relay on optional board in On position
- Circuit fault LED on console lit
steady

Display:
C I R x H P F A U L T x x m n
X C U T ( S ) I N 2 4 H
C I R C U I T X O F F
H P F A U L T
x . C I R C U I T x H P
D . T E M P F A U L T C x x x m n
x C U T ( S ) I N 2 4 H
C I R C U I T X O F F
D I S C H A R G E F A U L T
x - D I S C H . T . C I R C U I T x
C I R C U I T x L P F A U L T
x C U T ( S ) I N 2 4 H
C I R C U I T X O F F
L P F A U L T