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USER MANUAL – Release 1.2 of 01/01/2010
Page 177 of 191
Version: 02/03/2010
57.27
PUMP DOWN ALARM WITH LOW PRESSURE TRANSDUCER IN START-UP
Display label meaning
b1PL
(pump-down alarm in circuit n° 1 start-up)
b2PL
(pump-down alarm in circuit n° 2 start-up)
b3PL
(pump-down alarm in circuit n° 3 start-up)
b4PL
(pump-down alarm in circuit n° 4 start-up)
Cause of activation
With
Pd1
!
0
:
!
pump down pressure switch with ID temperature control call not active for
time Pd4
!
low pressure transducer with temperature control call, the set Pd2 is not
reached within time Pd4
Reset
From pressure switch ID temperature control call not active
From temperature control call with evaporation pressure > Pd2 set + Pd3
differential
Reset
Automatic/becomes manual after Pd8 interventions per hour if Pd9 =1 (reset
procedure in functions menu) If Pd9 = 0 it remains with automatic reset. It is
recorded in the historical alarms only with manual reset
Icon
flashing
Action
Alarm relay + buzzer activated only when the alarm becomes manual reset
Regulators
Alarm
Relay + buzzer activated only when the alarm becomes manual reset
Reverse valve
It follows its regulation
Recovery valve
it follows its regulation
Free-cooling on/off valve
it follows its regulation
Auxiliary relay
It follows its regulation
Idle running valve
It follows its regulation
Supply ventilation
It follows its regulation
Condensation ventilation
It follows its regulation
Support/boiler/anti-freeze
It follows its regulation
Pump/and water evaporator
and condenser
It follows its regulation
Compressors
Off with manual reset alarm
Pump down solenoid valve
It follows its regulation
