Related Manuals for Nordmann AT4 D
Summary of Contents for Nordmann AT4 D
- Page 1 NORDMANN E N G I N E E R I N G Nordmann AT4 D Steam generator SERVICE MANUAL 2567909 EN 1412...
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Page 3: Table Of Contents
On/Off hysteresis of the supply and the exhaust fan (2-fan operation) Water management The SC system of the Nordmann AT4 D The use of softenend water for the operation of the Nordmann AT4 D Block diagrams Block diagram CPU Block diagram power board... -
Page 4: Introduction
Nordmann AT4 D. It is also as- sumed that the Service technician has notice of the mounting instructions as well as of the operating instructions of the Nordmann AT4 D and that he is familiar with the dangers when working on the unit. -
Page 5: Settings In The Engineering Level
Settings in the engineering level Launching the Engineering level Select the engineering settings menu: Path: Main menu > User > Password entry: 1055 > Engineering AT4D 65kg/h 400V3 Main Menu Engineering Fragrance :Set Fragrance :Set Steam Bath :Standby Light-2 :Off Max.op.hr SC:5000h Temperature :34°C User... -
Page 6: Setting The Replacement Interval Time For The Steam Cylinder
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. - Page 7 Notes on the function “Ship” The “Ship” function is used if the Nordmann AT4 D is installed on a vessel. On vessels fault currents are monitored much more exactly than elsewhere, since these lead to an increased corrosion of the ship trunk.
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Page 8: Setting The Heating Current Monitoring
Setting the heating current monitoring Select “Overcurrent” in the engineering menu, then press the <Set> key. Engineering Overcurrent Drain Cool Float GFCI :Set Fixed Overcurrent :Float Float Min.Request :25/20% Stop Mode :Set In the upcoming modification dialogue you determine whether the current monitoring shall take place with a fixed (Fixed) or a floating over current threshold (Float). -
Page 9: Setting The On/Off Hysteresis
Setting the On/Off hysteresis Select “Min.Request” in the engineering menu, then press the <Set> key. Engineering Min.Request GFCI :Set 25/20% Overcurrent :Float 25/20% Min.Request :25/20% 17/12% Stop Mode :Set Instab.Temp.:Set In the upcoming modification dialogue you determine the minimum demand for switching the unit on (first value) and off (second value) (On/Off hysteresis). -
Page 10: Setting-Up Temperature Sensor Monitoring Function
Setting-up temperature sensor monitoring function In order to detect a manipulation on the temperature sensor, the steam bath control features the function “Instab.Func”. If this function is activated the temperature curve of the temperature sensor is monitored during steam bath operation. If the temperature decreases by cooling the temperature sensor (e.g. by the use of a cool rag) within a certain time “Time Range”... -
Page 11: Resetting The Control To Factory Settings
2.10 Resetting the control to factory settings Caution! When resetting the control to factory settings, any modified settings in the user level are lost. Select “FactoryReset” in the engineering menu, then press the <Set> key. Engineering FactoryReset Min.Request :20/25% Are you sure? Stop Mode :Switch Instab.Temp.:Set... -
Page 12: Setting-Up Countdown Function/Resetting Countdown
2.10 Setting-up countdown function/resetting countdown Ex factory the countdown function is disabled. In order to activate the countdown function, you deter- mine the countdown time (Running time) first, then you activate the function by entering the unlock code (Unlock Code). As soon as the countdown function is activated, the set countdown time (Running time) is decremented, once the steam generator is switched on (standby operation, keep warm operation or steam operation). - Page 13 – Deactivating the countdown function Select “Countdown” in the engineering menu, then press the <Set> key. Engineering Countdown Running Time Min.Request :20/25% Running Time:720h 720 h Stop Mode :Switch Unlock Code :1239 720 h Instab.Temp.:Set ProgramReset:Set FactoryReset:Set Count Down :Set Countdown ProgrammReset Running Time:720h...
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Page 14: Malfunctions
Malfunctions Operating malfunctions E13 Maximum heating time exceeded Function: indicates that the maximum heating time has been exceeded. Procedure: this function limits the max. duration of continuous steam bath operation in the operating mode “week timer”. Behaviour on activation: No Warning Error Display E13: Max.Heating... - Page 15 E15 Program fault Function: indicates that the steam generator is blocked via the function “Countdown”. Procedure: Error E15 may be reset only if the correct unlock code is entered. If the unlock code gets lost the CPU board must be replaced or newly programmed.
- Page 16 W20, E20 Maximum temperature switch has triggered Function: indicates that the maximum temperature switch has triggered. Procedure: if the maximum temperature switch has triggered the whole system is blocked and error E20A is displayed. Behaviour on activation: No Warning Error Display E20: Temp.Fuse LED display:...
- Page 17 W22, E22 Maximum filling time and W23, E23 No electrode current Function: monitoring of the filling cycle Procedure: if the filling cycle ist not finished within 20 minutes (maximum filling level or reference current not reached) a warning is triggered. If the current is below 1.5 % warning W23 is triggered otherwise warning W22.
- Page 18 W24, E24 Electrode current too high Function: monitoring of the heating current (Phase L1) Procedure: if a overcurrent is detected the main contactor is switched off immediately, a draining is carried out and the Warning W24 is triggered. Subsequently, the main contactor is activated again. If overcurrent occurs again, the process is repeated.
- Page 19 W25, E25 Maximum admissible electrode current exceeded Function: monitoring of the heating current (Phase L1) Procedure: if a overcurrent is detected the main contactor is switched off immediately, a draining is carried out and the Warning W25 is triggered. Subsequently, the main contactor is activated again. If overcurrent occurs again, the process is repeated.
- Page 20 W27, E27 Foam detection Function: monitoring of foam formation in the steam cylinder. Procedure: to detect the formation of foam the current value when the water gets in contact with maximum level sensor (filling end) and the current value when the water looses the contact with the maximum level sensor are set in relation to each other.
- Page 21 W28, E28 Steam cylinder used Function: monitoring of the steam cylinder on lime deposits at the electrodes. Procedure: if a filling cycle ends due to a contact with the max. level sen- sor a counter is increased by 1. If the filling cycle ends with 110 % current the counter is decreased by 1 (not <...
- Page 22 W32, E32 No temperature signal from temperature sensor Function: monitoring of the temperature signal at the control input (sensor interruption). Procedure: If the temperature drops below the threshold of 3% or exceeds the threshold of 97% (100% - 3%) the steam production is stopped and Warning W32 is triggered.
- Page 23 W36, E36 Standby Modus active Function: Indicates that a standby operation is active (Draining, AntiFreeze or KeepWarm). Procedure: – Standby-Operation “Draining” If a module has no demand for 72 hours standby draining is triggered on the unit. During draining the information W36 is shown in the display. In standby mode the draining function is triggered only once (no repetition after 72 additional operating hours without demand).
- Page 24 W37 Forced draining Function: Indicates forced draining is active. Procedure: If a module has produced steam for 72 hours a forced draining (3 minutes) is performed on the unit. During draining the information W37 is shown in the display. Subsequently, the cylinder is refilled with water and operation continuous.
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Page 25: Control Matrix Steam Bath Control / Principle Diagram P-Regulation
Control matrix Steam bath control / Principle diagram P-regulation Control matrix Steam bath control... -
Page 26: Principle Diagram P-Regulation
Principle diagram P-regulation Example: Setpoint 48°C / P range 4°C / Temperature range 25° - 55°C P range Setpoint 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 Current Temperature in °C... -
Page 27: On/Off Hysteresis Of The Supply And The Exhaust Fan (2-Fan Operation)
On/Off hysteresis of the supply and the exhaust fan (2-fan operation) In order to achieve an optimum steam formation in the steam bath cabin when operating the Nodmann AT4 D with a supply and a exhaust fan (2-fan mode) the ON and Off switching points can be indiviually set with the hysteresis value in °C (steam bath... -
Page 28: Water Management
The SC system of the Nordmann steam generators does not prevent lime scaling, however it does lead to substantially longer operation cycles be- cause the lime deposit at surfaces is drastically reduced. -
Page 29: The Use Of Softenend Water For The Operation Of The Nordmann At4 D
The siphon in the drain line should be freely accessible to facilitate cleaning since increased lime deposits could occur. The use of softenend water for the operation of the Nordmann AT4 D The use of softened water is not recommended for Nordmann AT4 D. Instead of the expected cylinder service interval increase, most likely functioning problems will appear. - Page 30 8. Check installation of the steam generator and steam distribution accord- ing to the mounting instructions Nordmann AT4 D. 9. The drain water quantity of the Nordmann AT4 D must be increased. Check the following water management settings in the user settings level...
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Page 31: Block Diagrams
Block diagrams Block diagram CPU... -
Page 32: Block Diagram Power Board
Block diagram power board... -
Page 33: Block Diagram Steam Bath Board
Block diagram steam bath board... - Page 34 Notes...
- Page 35 © Nordmann Engineering Ltd., Printed in Switzerland Technical modifications reserved...
- Page 36 Reg.No. 40002-2 NORDMANN Manufacturer: Nordmann Engineering Ltd. E N G I N E E R I N G www.nordmann-engineering.com, info@nordmann-engineering.com...