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(6)
2nd reserve fault
(7)
Dryer 1: inlet valve
(8)
Open
(9)
Closed
(10)
Dryer 1, exhaust valve vessel A
Protections
When there is a problem with one of the direct inputs (see previous paragraph), the red warning LED will be
lit. When no problem is visible on the compressor or dryer overview screen (ES_4 and ES_6, see section
Interface icons and menu
all warnings will disappear when the problem is remedied. The following 4 situations are important (the fault
is indicated in yellow ):
1. Reserve Manifold Low pressure:
Occurs when the backup cylinder pressure decreases below the predefined limit. When this is resolved by
successfully replacing the backup cylinders, the warning will be automatically reset.
2. Dryer 1/2 Dew Point Alarm
Occurs when the dew point of that dryer (dryer 1 or dryer 2) exceeds the predefined limit or when no read-
out signal is obtained. This will cause the system to switch to the backup dryer and will set the current
dryer as failed. Taking into account the maintenance warnings (see maintenance warnings), check the
operation of the dryer, flow consumption, filters,... to resolve this issue. Also check the sensor, the cable
and the connections for proper connection and correct wiring according to the service diagram. The fault
should be physically remedied (spare parts can be ordered, consult the spare part list), whereby the error
on the failed dryer needs to be reset manually.
40
structure), the Protections submenu must be consulted. Except for a dryer failure,
(16)
2nd dew point fault
(17)
Plant fault
(18)
Plant emergency
(19)
Reserve fault
(20)
Pressure fault
Instruction book
2920 7099 70
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