Setting The Replacement Interval Time For The Steam Cylinder; Activating/Deactivating The Drain Cooling; Setting Gfci Operation - Nordmann AT4 D Service Manual

2.3

Setting the replacement interval time for the steam cylinder

Select "Max.op.hr SC" in the engineering menu, then press the <Set> key.
Engineering
Fragrance :Set
Max.op.hr SC:5000h
Drain Cool :On
GFCI :Set
Overcurrent :Float
Esc
In the upcoming modification dialogue set the desired interval time for the replacement of the steam
cylinder in hours (max. operating hours). The interval time to be set depends on the water quality on site.
Note: First priority for the determination of the maximum operating hours of the steam cylinder has
always the maximum level counts via the level sensor.
Factory setting:
Setting range:
2.4

Activating/deactivating the drain cooling

Select "Drain Cool" in the engineering menu, then press the <Set> key.
Engineering
Fragrance :Set
Max.op.hr SC:5000h
Drain Cool :On
GFCI :Set
Overcurrent :Float
Esc
In the upcoming modification dialogue activate (On) or deactivate (Off) the drain cooling function. With
activated drain cooling the inlet valve opens during the drain cycle, thus reducing the drain water tem-
perature.
Factory setting:
Options:
2.5

Setting GFCI operation

Select "GFCI" in the engineering menu, then press the <Set> key.
Engineering
Max.op.hr SC:5000h
Drain Cool :On
GFCI :Set
Overcurrent :Float
Min.Request :25/20%
Esc
In the upcoming modification dialogue select whether or not the Nordmann AT4 D is connected to a
fault current relay protected mains supply or whether the Nordmann AT4 D is operated on a vessel with
special requirements concerning fault current measurement.
Factory setting:
Options:
6
Max.op.hr SC
5000
5000
Set Esc Set
5000 h
100...8000 h
Drain Cool
On
Off
On
Set Esc Set
On
On (Inlet valve opens during drain cycle)
Off (Inlet valve remains closed during drain cycle)
GFCI
GFCI-Mode :On
GFCI :Set
Set Esc Set
On
On (mains supply with fault current relay protection, main contactor is switched
off during drain cycle)
Off (mains supply without fault current relay protection, main contactor remains
activated during drain cycle)
Ship (mains supply with special requirements concerning fault current measure-
ment, main contactor is switched off during filling and draining cycle)
GFCI-Mode
On
Off
On
Ship
Esc Set