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6859

201

36 - EN

Warning Device NVD-111

Troubleshooting

6.2

Sensor Maintenance

Cleaning the Sensor

The sensor is maintenance free. To ensure the entire alarm system functions

correctly, clean the sensor at the following intervals:
1. Clean the sensor at least once a year.
2. Pay particular attention to cleaning the sensor tips of all oil, grease, and other

dirt residues using a grease-dissolving cleaning agent.

3. If the sensor is used in difficult conditions, clean the sensor more often.

Caution!

Malfunction or false alarm caused by a contaminated sensor
If the sensor is very dirty, this may trigger a false alarm or mean that no alarm is

triggered under certain circumstances.

Clean and dry the sensor when emptying/disposing of the oil/petrol

separator or container.

Do not clean the sensor with corrosive liquids.

Summary of Contents for NVD-111

Page 1: ...ISO9001 Warning Device NVD 111 PROCESS AUTOMATION MANUAL ...

Page 2: ... of Delivery for Products and Services of the Electrical Industry published by the Central Association of the Electrical Industry Zentralverband Elektrotechnik und Elektroindustrie ZVEI e V in its most recent version as well as the supplementary clause Expanded reservation of proprietorship Warning Device NVD 111 ...

Page 3: ...n 6 2 2 Product Program 7 2 3 Design and Dimensions 8 3 Installation 12 3 1 Mounting of the Sensors 12 3 2 Mounting the Warning Device 20 3 3 Connection 21 4 Commissioning 28 4 1 Configuring the Warning Device using DIP Switches 28 5 Operation 32 5 1 Alarm Signals 32 5 2 Resetting the Alarm Signal 33 5 3 Function Testing 34 6 Troubleshooting 35 6 1 Troubleshooting and Alarm States 35 6 2 Sensor Ma...

Page 4: ... The Declaration of Conformity Certificate of Compliance Statement of Conformity EC type examination certificate and data sheets are an integral part of this document The data sheet contains the electrical data of the Declaration of Conformity the Certificate of Compliance and the EC type examination certificate The documents mentioned are available from http www pepperl fuchs com or contact your ...

Page 5: ...ntended Use The warning device is a compact alarm system for monitoring one or two sensors in grease interceptors The warning devices must only be installed in a suitable control cabinet or NVO5 KV installation housing The warning device was designed for n the monitoring of the fat layer thickness i e an alarm if a certain limit of maximum receptacle capacity of fat has been reached n the monitori...

Page 6: ...torage temperature see data sheet must be considered 1 7 Installation and Commissioning 1 7 1 Installation of the warning device The device must only be installed outside potentially explosive zones The device must not be installed in places with potentially aggressive vapors The device must be free of voltage during installation and maintenance The warning system must only be connected to the sup...

Page 7: ...detect any fat 1 9 Repair The devices must not be repaired changed or manipulated If there is a defect the product must always be replaced with an original device 1 10 Disposal Disposal of devices and their packaging material must be performed in compliance with the applicable laws and guidelines of the corresponding country The devices do not contain batteries which need to be disposed of separat...

Page 8: ...onditions are possible n The fat is liquid Such fat is found in e g the manufacture and storage of vegetable fats This fat forms a liquid fat layer which clearly separates from water For this composition of fat please use fat level sensor KVF F for detecting the fat layer thickness n The fat is hard Such fat is found in e g waste water from sinks or dishwashers and in floor drains in large kitchen...

Page 9: ... for detecting fat layer thickness in an aqueous emulsion with small lumps of fat or a hardened layer of fat FAU 104 Fat level sensor for detecting fat layer thickness in a liquid layer of fat KVF F Overflow sensor for detecting excessively high liquid level KVF O Description Type code Cable connector IP68 for one sensor LAL SK2 Mounting set for one sensor NVO5 B Installation housing with DIN moun...

Page 10: ... 2 1 Installation housing NVO5 KV Figure 2 2 1 DIP switches 2 LEDs 3 Connections for power supply and potential free contacts 4 Reset button 5 Sensor connections NVD 111 ALARM RESET SUPPLY FAT LAYER ALARM OVERFLOW ALARM SYSTEM OK 68307 Mannheim Germany www pepperl fuchs com Fat Alarm System 70 58 86 54 4 2 3 5 1 200 116 105 ...

Page 11: ...Device NVD 111 Product Specifications 266859 2014 04 EN 9 EN Overflow sensor KVF O Figure 2 3 1 Lower section with laser marking 2 Middle section 3 Upper section 4 Cable 5 Switching point 3 1 5 4 2 138 25 Ø31 6 ...

Page 12: ... Warning Device NVD 111 Product Specifications EN Fat level sensor KVF F Figure 2 4 1 Lower section with laser marking 2 Middle section 3 Upper section 4 Cable 5 Shrink tubing 6 Switching point 3 1 6 4 5 2 138 25 300 Ø31 6 ...

Page 13: ...vice NVD 111 Product Specifications 266859 2014 04 EN 11 EN Fat level sensor FAU 104 Figure 2 5 1 Lower section 2 Laser marking 3 Cable 4 Shrink tubing 5 Reflectors 6 Schwitching point 4 3 2 1 5 6 152 300 Ø38 66 ...

Page 14: ...when emptying disposal or carrying out maintenance work on the grease interceptor The oil petrol separator can be made of various materials We therefore recommend using the following methods to secure the device in a suspended position n If mounting the device in concrete containers use the NVO5 B mounting set See the figure below n If mounting the device in containers made from other materials su...

Page 15: ...mal liquid level water zero line in a position so close to the water zero line that the switching point is surrounded by liquid when an overflow occurs This occurs n when there is back pressure in the sewage system or n if the drain is blocked The switching point of the sensor is located between the insulated connecting piece and the top metal section see chapter 2 3 1 Mounting set for one sensor ...

Page 16: ...verflow will not be detected by the sensor Therefore we recommend mounting a pitot tube for overflow sensor KVF O This ensures that the sensor only comes into contact with water and the overflow is detected The following diagram shows the composition 1 Overflow sensor KVF O A Air B Fat oil grease FOG C Water L Water zero line S Sensor switching point X Alarm limit maximum liquid level B C A 1 L S ...

Page 17: ...N 15 EN Figure 3 3 Mounting the overflow sensor KVF O with pitot tube 1 Overflow sensor KVF O A Air B Fat oil grease FOG C Water D Open pitot tube not supplied L Water zero line S Sensor switching point X Alarm limit maximum liquid level B C A 1 D L S X ...

Page 18: ...e immersed in the liquid The switching point of the sensor is located between the insulated connecting piece and the top metal section see chapter 2 3 Caution Damage to the cable as a result of aggressive greases The sensor cable must not be in continuous contact with grease or with water that contains grease The sensor is therefore fitted with shrink tubing The shrink tubing protects the cable fr...

Page 19: ...59 2014 04 EN 17 EN Figure 3 4 Mounting the fat level sensor 1 Fat level sensor KVF F 2 Shrink tubing A Air B Fat oil grease FOG C Water L Water zero line S Sensor switching point X Alarm limit maximum fat layer thickness L S B C A 1 2 300 X ...

Page 20: ...always be immersed in the liquid The switching point of the sensor is located at the same level as the reflectors see chapter 2 3 Caution Damage to the cable as a result of aggressive greases The sensor cable must not be in continuous contact with grease or with water that contains grease The sensor is therefore fitted with shrink tubing The shrink tubing protects the cable from the effect of the ...

Page 21: ...9 2014 04 EN 19 EN Figure 3 5 Mounting the fat level sensor 1 Fat level sensor FAU 104 2 Shrink tubing A Air B Fat oil grease FOG C Water L Water zero line S Sensor switching point X Alarm limit maximum fat layer thickness L S B C A 1 2 X 300 ...

Page 22: ...ted Figure 3 6 Note If installing the device in an enclosure or switch cabinet follow the mounting instructions provided by the manufacturer of the enclosure or switch cabinet Caution Malfunction or damage resulting from overheating If the external temperature exceeds 60 C at maximum load the device may become damaged n Ensure sufficient ventilation at the installation site n Maintain a minimum di...

Page 23: ...the identification plate Take care not to reverse the polarity when connecting the sensor cable The loop resistance of the extension cable should not exceed 20 for the sensors Warning Risk of short circuit Injuries and damage to the device are possible when working with live parts n Before working on the device always disconnect the supply voltage n Connect the device to the supply voltage only af...

Page 24: ...Figure 3 7 Connecting and configuring the warning device with overflow sensor KVF O 1 Overflow sensor connection 2 Overflow sensor KVF O 3 DIP switches 4 Power supply bu blue bn brown OFF ON 18 20 22 24 10 11 12 1 2 3 5 6 7 1 2 3 4 5 6 7 8 230 V AC 3 4 1 2 bu bn ...

Page 25: ...gure 3 8 Connecting and configuring the warning device with fat level sensor KVF F 1 Fat level sensor connection 2 Fat level sensor KVF F 3 DIP switches 4 Power supply bu blue bn brown OFF ON 18 20 22 24 10 11 12 1 2 3 5 6 7 1 2 3 4 5 6 7 8 230 V AC 3 4 2 1 bu bn ...

Page 26: ...re 3 9 Connecting and configuring the warning device with fat level sensor FAU 104 1 Fat level sensor connection 2 Fat level sensor FAU 104 3 DIP switches 4 Power supply bu blue bn brown OFF ON 18 20 22 24 10 11 12 1 2 3 5 6 7 1 2 3 4 5 6 7 8 230 V AC 3 4 2 1 bu bn ...

Page 27: ...ing device with overflow sensor KVF O and fat level sensor KVF F 1 Overflow sensor connection 2 Fat level sensor connection 3 Overflow sensor KVF O 4 Fat level sensor KVF F 5 DIP switches 6 Power supply bu blue bn brown OFF ON 18 20 22 24 10 11 12 1 2 3 5 6 7 1 2 3 4 5 6 7 8 230 V AC 1 4 2 5 6 3 bu bu bn bn ...

Page 28: ...g device with overflow sensor KVF O and fat level sensor FAU 104 1 Overflow sensor connection 2 Fat level sensor connection 3 Overflow sensor KVF O 4 Fat level sensor FAU 104 5 DIP switches 6 Power supply bu blue bn brown OFF ON 18 20 22 24 10 11 12 1 2 3 5 6 7 1 2 3 4 5 6 7 8 230 V AC 1 3 bu bn 5 6 4 2 bu bn ...

Page 29: ... used for example for an external alarm or the connection to a central monitoring system Note Avoid routing the sensor cable parallel to other cables as these cables may transmit interfering signals These interfering signals may affect the sensor signal and impair the alarm function Use unshielded 2 strand cables for each sensor To ensure the warning device functions correctly do not exceed the fo...

Page 30: ...overs can be found in the grease interceptor and lumps of fat often form These suspended particles and lumps of fat can cause a false alarm for the fat level sensor Therefore it is possible to set two possible monitoring states for the fat level sensor on the warning device via the setting of DIP switch 1 reaction time of the fat level sensor Warning device NVD 111 ...

Page 31: ...device in alarm mode red FAT LAYER ALARM LED lights up The device becomes active only after the fat level sensor has remained in water undisturbed for a period of 1 hour The FAT LAYER ALARM LED goes out The SYSTEM OK LED flashes Note Note that the SYSTEM OK LED light ups under the following conditions n After switching on the warning device n After switching the DIP switch from OFF to ON n After p...

Page 32: ... ON to OFF an alarm is detected immediately and the warning device displayed The DIP switches are located on the right of the device see chapter 2 3 Figure 4 1 Overview of the warning device DIP switches Repeat alarm in 24 hours FAU 104 KVF F Reaction time Reset key Relay setting Relay setting Acoustic alarm OFF 1 2 3 4 5 8 7 6 KVF O Refer servicing to qualified personel ON ...

Page 33: ...m status is present If the alarm status disappears relay 1 and or relay 2 switches again if ALARM RESET is actuated the relays switch again DIP 6 OFF DIP 5 Relay setting OFF In the case of active alarm status relay 1 switches to overflow sensor KVF O and relay 2 switches to fat level sensor KVF F FAU 104 If the alarm status disappears relay 1 and or relay 2 switch again if ALARM RESET is actuated ...

Page 34: ...ashes briefly Prerequisite DIP switch 1 ON In this mode a brief flash of the SUPPLY LED indicates that a change in status has been detected by the sensor Green LED SYSTEM OK lights up No errors or alarms active normal operation flashes No alarm or error active there was an alarm or error in the past Red LED OVERFLOW ALARM lights up Alarm active overflow sensor is covered with liquid flashes Intern...

Page 35: ...ic alarm is briefly activated n Both relays are activated in turn The reset function is started prerequisite DIP switch 1 Reaction time is ON n The hour counters 1 hour or 24 hours are set to 0 n The System OK LED lights up If there is a current fat layer alarm this alarm status is only displayed after 24 hours via the FAT LAYER ALARM LED and if applicable an acoustic alarm triggered and relay act...

Page 36: ...move the sensor from the grease interceptor 3 Wash and dry the sensor 4 Immerse the sensor in water The green SYSTEM OK LED flashes or lights on the warning device Checking the alarm status Checking the alarm situation for fat level sensors 1 Switch DIP switch 1 to position OFF 2 Suspend the KVF F or FAU 104 fat level sensor freely in air The red FAT LAYER ALARM LED lights and if applicable an aco...

Page 37: ...ress the ALARM RESET button n SUPPLY LED lights up n OVERFLOW ALARM LED lights up Excessive liquid level It is essential to check the separator status If necessary takes measures to stop the alarm situation The alarm situation can arise from a faulty or blocked drain n SUPPLY LED lights up n OVERFLOW ALARM LED flashing Sensor fault or lead breakage Check sensor and sensor installation and replace ...

Page 38: ...aning the sensor tips of all oil grease and other dirt residues using a grease dissolving cleaning agent 3 If the sensor is used in difficult conditions clean the sensor more often Caution Malfunction or false alarm caused by a contaminated sensor If the sensor is very dirty this may trigger a false alarm or mean that no alarm is triggered under certain circumstances n Clean and dry the sensor whe...

Page 39: ...inals 22 24 Output Connection relay 1 terminals 1 2 3 Connection relay 2 terminals 10 11 12 Output potential free changeover contact Contact load 250 V AC 4 A 100 VA Galvanic isolation Output supply reinforced insulation acc to EN 50178 rated insulation voltage 300 Veff Output output reinforced insulation acc to EN 50178 rated insulation voltage 300 Veff Ambient conditions Ambient temperature 25 C...

Page 40: ...Cable 5 m Mass approx 520 g Dimensions 31 6 mm x 138 mm Power supply Rated voltage 13 V DC Ambient conditions Ambient temperature 20 C 60 C 253 K 333 K Mechanical specifications Protection degree IP68 Connection cable Material stainless steel Cable 5 m Mass approx 520 g Dimensions 31 6 mm x 138 mm Power supply Rated voltage 13 V DC Ambient conditions Ambient temperature 20 C 60 C 253 K 333 K Mecha...

Page 41: ...fuchs com PROCESS AUTOMATION PROTECTING YOUR PROCESS Worldwide Headquarters Pepperl Fuchs GmbH 68307 Mannheim Germany Tel 49 621 776 0 E mail info de pepperl fuchs com For the Pepperl Fuchs representative closest to you check www pepperl fuchs com contact 266859 DOCT 1951A 04 2014 ...

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