Service Manual. Rev.1.0 February 2015 SG-30 P 5510 M

Transcription

1 Service Manual Rev.1.0 February 2015 SG-30 P 5510 M

2 SG-30 outer layout Standard accessories kit (steam + vacuum) Standard handle (steam + vacuum) length 2,5 m Water lack red lamp Steam ready green lamp Steam pressure gauge Steam flow Vacuum plug Water tank refill cap Electric controls plug Handle Detergent tank refill cap Not used Main power switch Heating element 1, power switch Heating element 2, power switch Pag. 2

3 SG-30 outer layout & handgrip Power supply cord Airflow exhaust silencer Electric controls plug Recovery tank hinges Recovery tank with water for air filtration Data plate Vacuum switch Chemical injection button Steam switch Pag. 3

4 SG-30 functioning principle SG-30 is a steam generator suitable for professional continuous usage and provided with self-refill of water to the steam boiler, vacuum system to collect the dirt moisture and chemical injection combined with the steam stream. Water self-refill scheme Pag. 4

5 The heart of SG-30 is the steam boiler that is a stainless steel pressure vessel with heating elements inside to generate the steam. The steam generation follows physical rules and particularly the enthalpy rule that puts in direct relation the steam pressure and the steam temperature. Any steam generator, to achieve a certain temperature to the steam [ C], has a correspondent pressure [bar] as below. SG-30's boiler pressure setting is about 5-5,5 bar, accordingly the maximum steam temperature into the boiler will be 150 C, but since during the normal use, the pressure fluctuates, the average steam temperature will be about 140 C. Accordingly with the enthalpy rule, when the steam stream is sprayed in the atmosphere (at the lance nozzle) the steam that is physically in gas status, condensates and become liquid (water), so at 0 bar when the steam changes its physical status, its temperature is always of about 97 C. If checked with a thermometer the temperature at the nozzle, it will always be lower than 100 C despite the steam generator boiler temperature be much higher. Pag. 5

6 SG-30 inner layout & components functionality description Steam flow adjusting valve Control switches Vacuum turbine Steam outlet line Chemical injection line Water pump to refill the boiler Steam electro valve Water tank with water level sensors (electrodes) Chemical tank with level sensors (electrode) Steam boiler with thermal insulation cover Chemical pump to ignite the chemical Vacuum pipe Pag. 6

7 Water tank the water tank has a capacity of 1,5 liters and is provided with electrodes that thanks to the water conductivity, detect the water level into the tank. The electrodes sensor is connected to the electronic board and in case the tank is empty, the water pump that refills the boiler is deactivated and the red lamp on the machine (water lack) is on. Water to be used for the steam generator cannot be demineralized water, since the water level detection is done by electrodes that measure the water own conductivity. Water pump to refill the boiler the water pump brings the water from the water tank into the boiler, this in order to compensate the discharge of steam and keep the boiler at its maximum efficiency of steam production. The water pump is powered by the electronic card and is activated when the electrodes sensor inside of the boiler, detect a low water level. The water pump functioning is fully automatic. Steam Boiler The steam boiler has a volume capacity of 1,5 liters and is provided with resistor having a power of 2kW to generate the steam. The resistor are two, each is 1Kw and they can be activated separately by the two switches at the top of the machine. Here following the boiler breakdown view and the functioning description of the boiler elements. Electrode for the boiler water level control This electrode is connected to the electronic board and detects the water level into the boiler. When low water level is detected, the sensor activates, trough the electronic card, the water feeding pump that supplies the water into the boiler so restoring the proper level. The level detection is possible because the tap water has inside impurities (salts and minerals) so is weakly conductive, for this machine is not possible to feed the boiler with demineralized water. Pressure switch since the pressure and the temperature of the steam are linked each other and are proportional, by checking the pressure we can determine the steam temperature. The pressure switch 5,5 bar, will keep the pressure and the temperature, inside of the boiler, constant, this by activating or deactivating the heating elements through the electronic board. Safety valve 7 bar The safety valve will avoid overpressure conditions into the boiler, keeping safely the pressure to a maximum of 7 bar in case of boiler malfunctioning. Safety thermostat The safety thermostat is a safety component that switches off the boiler in case the temperature is over than 165 C. Thermal-Amperometric sensor This safety element checks the temperature and the current draw to the heating elements. This intervenes switching off the heating elements if for some reasons they are powered without having water into the boiler. Steam EV The steam electro-valve controls the delivery of steam at the outlet and is controlled by the switches placed on the hand grip. Pag. 7

8 Thermal insulation to prevent temperature dissipation and avoid temperature transmission to the other machine components. Boiler water feeding. Pressure control switch 5,5 bar that determines the pressure and the temperature inside of the boiler. The control panel pressure gauge visualize the pressure read in this point. Electrode to detect the water level inside of the boiler Safety valve 7 bar that discharges in case of overpressure of the boiler, inside of the detergent tank. Steam EV to control the steam delivery on off. Safety thermostat to limit the max temperature. Boiler diecast aluminum bottom that includes the two heating elements. Drain tap for boiler limestone cleaning. Thermal- Amperometric sensor to prevent burning of the heat elements in case of working dry. Boiler water feeding pump, at its outlet there is an air purge valve to facilitate the pump priming. Detergent injection line. Steam and detergent outlet line, the outlet goes to the steam adjusting tap. Pag. 8

9 Service Manual Ip Cleaning S.p.A. Viale Treviso, Summaga di Portogruaro VENICE ITALY Tel (r.a.) Fax Internet address: address: Topics INDEX 1. The machine doesn t produce steam Page 1a No electrical connection or differential switch intervenes 11 1b No electrical supply to the heating elements of boiler, or over-temperature detected by the thermal sensors. 18 1c The feeding water pump not supply water into the boiler 19 1d Electronic card burnt or damaged 21 1e Pressure switch not functioning 23 1f Water level probe not properly detects the boiler water level The machine produce steam into the boiler, but is not streamed at the lance. Page 2a Electro-valve clogged or burnt 24 2b Outlet circuit clogged by limestone 24 2c Steam stream adjusting tap clogged by limestone or completely closed 24 2d Hand grip electric controls not work 25 2e Plug that connects hose and machine is not electrically connected 25 2f Electronic card burnt or damaged. 25 2g Main switch not closing The steam delivery at the lance is very poor or extremely wet Page 3a Steam circuit clogged by limestone 27 3b Water level sensor not working or boiler fully filled with water 27 3c Electro-valve not opening completely (partially clogged) 28 3d Steam stream adjusting tap in position closed or clogged 28 3e Steam leakages into the machine circuit or in the accessories 28 3f The steam circuit need maintenance and particularly the limestone cleaning 28 Pag. 9

10 4. Poor or missing detergent delivery Page 4a The detergent circuit has not been loaded before starting the boiler 29 4b The detergent tank is empty 30 4c The detergent pump is damaged or clogged or the circuit is damaged or has leaks. 30 4d Electronic card burnt or damaged Vacuum turbine not working or the suction is poor Page 5a Vacuum motor/turbine burnt or damaged 31 5b Handgrip vacuum control switch not working 31 5c Plug that connects hose and machine is not electrically connected 32 5d Electronic card burnt or damaged. 32 5e Water level sensors that determine the level of water for dust filtering into the vacuum tank, are intervened 32 5f The vacuum power is adjusted at minimum position The steam delivery or the vacuum system are working continuously Page and cannot stop. 6a Steam electro-valve defective or locked in position open 33 6b Switches placed on the handgrip defective or wires wired into the hose that are damaged and in short circuit. 33 6c Electronic card burnt or damaged Limestone cleaning procedure Page 34 Pag. 10

11 1. The machine doesn t produce steam 1) TROUBLE: Activating the main power switch and then one or both the switches heating elements, the pressure into the boiler doesn t increase, neither after several minutes, since for this model the steam ready requires about 20 until the heating elements generate the steam. Heating element 2, power switch Heating element 1, power switch Main power switch CAUSES: 1a No electrical connection or differential switch intervenes 1b No electrical supply to the heating elements of boiler, or over-temperature detected by the thermal sensors. 1c The feeding water pump not supply water into the boiler 1d Electronic card burnt or damaged 1e Pressure switch not functioning 1f Water level probe not properly detects the boiler water level REMEDIES: 1a Check the power supply voltage using a multimeter. The machine power supply characteristics are indicated on the machine data plate placed on the rear side of its chassis. For single-phase, the allowed voltage tolerance is +/- 5%. Data plate and machine serial number Pag. 11

12 If the voltage is over or lower than the before mentioned tolerance, the machine electric components may damaged. Pay maximum attention while checking electric component: danger of electric shocks. If at the power socket there is a differential switch, be sure that the switch is on and not tripped out suddenly just after activating the machine power switches. This machine must be plugged into a socket provided with earth connection, since several electric elements are in touch with the water, there may be a voltage dispersion that causes that the differential switch trips out or may be a differential switch too much sensitive. We recommend a differential switch having a sensitivity of 30 ma at least. If the power cord or the power plug is damaged, is necessary its replacement with a new power cord. If the control panel switches are defective, so apparently are closed, but electrical circuit is not powered; in this case is necessary to open the machine and check the switches using a multimeter. If switches are damaged, replace them with new switches. If the thermal amperometric fuse is intervened few times, then may lose its capacity to selfreset and so keeps open the power supply circuit. In this case is necessary to open the machine and check the fuse using a multimeter; the fuse is placed under the boiler. To open the machine and check the before mentioned points, proceed as following described: Unscrew and remove the circular ring that locks the vacuum socket Slide out the vacuum socket and rotate it clockwise in order to disconnect it from the vacuum hose Pag. 12

13 Vacuum socket removed and disconnected With the help of a pin or a screwdriver, push into the machine, the central pin of the plastic rivets that secure the two plastic cover shells. Detail of the plastic rivet without the central pin Pull to slide out the remaining part of the rivet that now is free to slide In case of difficulties, pull out the rivet using a pincer or in the worst case you can cut it. The spare part rivets are MPVR40202 Remove the water tank cap and the bracelet that hold the cap to the tank Pag. 13

14 Remove the chemical tank cap and the bracelet that hold the cap to the tank Press the tanks down and pull up at the same time the cover until the cover shells are separated Pag. 14

15 Levering with a screwdriver in order to remove the pressure gauge from the cover In order to facilitate the reassembling, secure with a band the capillary pipe of the pressure gauge Disconnect the capillary pipe from the pressure gauge Now the top shell can be completely removed Pag. 15

16 Check the main switch with a multimiter. At this stage, in order to check the thermal amperometric fuse, is necessary to disconnect and remove completely the boiler from its frame; proceed as following described: The wires light blue color are connecter to the fuse placed under the boiler Remove the plastic cap at the boiler top Unscrew the outlet fitting and disconnect the pipe Unscrew the water inlet fitting and disconnect the pipe Pag. 16

17 Disconnect the wire from the water level sensor Boiler disconnected Unscrew the drain cup at the boiler bottom Unscrew the nut that secure the boiler to the frame Lift up the boiler to check the fuse Check the fuse using a multimeter If the boiler is cold, but the thermal amperometric sensor is open (off), is necessary to replace it with a new sensor. Unscrew the stainless steel plate that secures the sensor and replace; it in this area the temperature is quite high, the sensor must be settled to the wiring and then protected by the silicon pipe insulators. Pag. 17

18 1b Pay maximum attention: danger of electric shocks. Disconnect the machine from the power supply before opening the shells, hence: Check, using a multimeter, the conductivity of the "heating elements" switches that are the two switches placed to the control panel that have the red button. Check the continuity of the safety thermostat that is place as in the following picture. The safety thermostat opens if the temperature of boiler is over 165 C and is self-resetting, but if it intervened several times, could be damaged and needs to be replaced. Check the continuity of the sensor using a multimeter Check if the heating elements are powered, in case of voltage, but the heating element doesn't heat, may be a failure to the element itself. Replace the whole boiler aluminum bottom that includes the heating resistances. Check the voltage to the heating resistors or their resistance in order to verify if are burnt or damaged. Pag. 18

19 1c If the feeding water pump not supply water into the boiler, can be a problem to the pump itself, so is necessary to check it the pump is powered. Check using a multimeter the voltage at the pump. Check the voltage to the water pump and if the pump is out of order, replace it with a new part. If there is no voltage to the pump, since the pump is driven by the electronic card, that activates the pump only if the boiler water sensor detects low water and the water tank sensor detect water into the tank, may be a problem of the sensors or to the electronic card. Ensure that the water into the water tank is not demineralized water, since the sensors with demineralized water lose their capacity to detect the level. To dismount and clean the water tank sensor is enough pull in order to slide out it, then clean it and remove any layer of dirt or limestone on it. To dismount and clean the boiler sensor, unscrew it fitting nut and clean it by removing any layer of limestone or dirt. When disassembled is often necessary to replace the gasket, the sensor probe including the gasket is part number MEPF Water tank sensor Boiler water level sensor Pag. 19

20 If the above mentioned checks do not highlight any problem, can be a failure of the electronic card the cause of the water pump that not functioning. Remove the electronic card and replace it with a new card. Cut the bands that secure the water pump Remove the water pump Remove the insulation sponge Unscrew the screw of the electronic board box cover Remove the box cover and the pump support bracket Pag. 20

21 Pull firmly to slide out the electronic board, hence disconnect the plugs and replace the electronic card with a new one. 1d If the electronic card may be burnt or damaged, follow the instruction at the point 1c to remove and replace it.. Pag. 21

22 Electric diagram On which : L N PE = Power supply line TF = Thermal fuse IC = Boiler switch R1 = Switch to activate the full heating power IA = Main switch that activate all controls LR = Red lamp for over-temperature warning LV = Green lamp that indicates steam ready TS = Safety thermostat 165 C PR = Pressure switch 5,5 bar RSC = Main heating element 1000 W RSC1 = Secondary heating element 1000 W EC (CN1-CN2-CN3-F1) = Electronic card PA = Switch to the handgrip to activate the vacuum PV = Switch to the handgrip to activate the steam PD = Switch to the handgrip to activate the Chemical injection SL1 = Level sensor for boiler SL2 = Level sensor water tank SL3 = Level sensor vacuum drum SL4 = Level sensor chemical tank PD = Chemical pump P = Boiler water refill pump MA = Vacuum turbine EV = Steam electro-valve Pag. 22

23 1e If the pressure switch does not function and blocked in position off, the boiler doesn t heat and do not generates the steam. Remove the pressure switch and replace it with a new part. Disconnect the wires connected to the pressure switch, unscrew it and replace with a new part. The pressure setting is 5,5 bar that you must check from the machine pressure gauge and in case is not properly adjusted, adjust from screw in the pressure switch body. 1f If the water level probe not properly detects the boiler water level follow the instructions as per point 1c. We recommend to check the proper functioning of safety electric components, at least once a year. Pag. 23

24 2. The machine produce steam into the boiler, but is not streamed at the lance. 2) TROUBLE: The green lamp steam ready is on but the steam is not streamed at the lance. CAUSES: 2a Electro-valve clogged or burnt 2b Outlet circuit clogged by limestone 2c Steam stream adjusting tap clogged by limestone or completely closed 2d Hand grip electric controls not work 2e Plug that connects hose and machine is not electrically connected 2f Electronic card burnt or damaged. 2g Main switch not closing REMEDIES: 2a The electro-valve opens and closes the steam delivery to the lance. If steam is not discharged, maybe the electro-valve is burnt or clogged by limestone. Check the voltage at the electro-valve, if there is voltage but the valve do not opens, dismount and replace the part with a new one. If the electro-valve opens when powered, but the steam is not sprayed out, check the circuit and remove the limestone by performing the limestone removal procedure described at the following chapter 7. Steam electro-valve 2b If the outlet circuit is clogged by limestone is necessary to perform the limestone removal procedure described in the following chapter 7. If, the limestone cleaning do not solve the problem, is necessary to check the whole outlet circuit, step by step, until clogging is not discovered and removed. 2c If the steam adjusting tap is clogged by limestone or completely closed there is not steam stream at the lance. Pag. 24

25 Perform the limestone removal procedure described in the following chapter 7. Open the adjusting tap rotating clockwise the knob. Steam adjusting tap 2d The electric controls on the hand grip, are used intensively and after a certain time, may have problems and is necessary to replace them. Open the handgrip with a screwdriver and by using a solderer, disconnect and replace the defective one with a new part. 2e If the plug that connects hose and machine is not electrically connected the steam cannot be sprayed from the lance. Check both the plug and the socket and restore the electrical connections. 2f If the electronic card is burnt or damaged, follow the instruction as per point 1c. Pag. 25

26 2g If the main switch is not closing, check it and replaced if necessary. Follow the instructions explained at the point 1a. Check the main switch with a multimiter. Pag. 26

27 3. The steam delivery at the lance is very poor or extremely wet 3) TROUBLE: The stream of steam at the lance is very poor or is extremely wet and condenses too much on the cleaning surface. CAUSES: 3a Steam circuit clogged by limestone 3b Water level sensor not working or boiler fully filled with water 3c Electro-valve not opening completely (partially clogged) 3d Steam stream adjusting tap in position closed or clogged 3e Steam leakages into the machine circuit or in the accessories 3f The steam circuit need maintenance and particularly the limestone cleaning REMEDIES: 3a The most common cause of this problem is the steam circuit clogged by limestone. The steam machine needs a boiler and circuit limestone cleaning, at least once a month; this cleaning frequency should be more often if the feeding water is particularly hard (a lot of calcium and salts diluted into the water). Perform the limestone removal procedure described in the following chapter 7. 3b If the water level sensor is not working or the boiler is fully filled with water, proceed with the sensor cleaning as described at the point 1b. Boiler water level sensor Pag. 27

28 3c If the electro-valve do not opens completely (partially clogged), follow the instruction as per point 2a. 3d If the steam stream adjusting tap is in position closed or clogged, follow the instructions as per point 2e. 3e Sometime can happen that the steam leakages are inside the machine circuit or inside the accessories. In this circumstance is necessary to open the machine top shell and switch-on the steamer in order to check the whole circuit and remove any leak from couplings or from pipes that may leak. Check the circuit with the maximum attention since the steam leakages, sometime are not easy to be discovered. The flexible hose that include the vacuum pipe, the steam pipe and the wiring, may have steam leakages that in the case are not visible from outside of the accessory. Check carefully the flexible hose with the vacuuming switched off to highlight any wet area caused by the steam leak. Repair the fittings or replace the holed hoses. Check the whole machine circuit to detect and remove any steam leak. Check the flexible hose and the handgrip to detect and remove any steam leak. 3f If the steam circuit needs maintenance and particularly of the limestone cleaning, follow the procedure described in the following chapter 7. Pag. 28

29 4. Poor or missing detergent delivery 4) TRUBLE: Poor detergent delivery CAUSES: 4a The detergent circuit has not been loaded before starting the boiler 4b The detergent tank is empty 4c The detergent pump is damaged or clogged or the circuit is damaged or has leaks. 4d Electronic card burnt or damaged. REMEDIES: 4a The detergent is injected at the outlet of the machine, mixed with the steam stream. Since the steam is pressurized at about 5 bar, the detergent circuit must be loaded with detergent, before activating the steam, otherwise the detergent pump has not the capacity to drain out the air and win the counter pressure generated by the steam. At the first time that is used the machine, fill the detergent tank, switch on the main switch only but not the switches activating the heaters. At this stage activate the detergent switch to the handgrip and hold until that detergent is sprayed out from the accessory. At this stage the detergent circuit is fully filled and ready to work. If this sequence, at the first starting, has been jumped, to activate the detergent is necessary cooling down the boiler and depressurize the steam circuit opening the boiler drain cap in order to be performed. Pag. 29

30 4b If the detergent tank is empty, the sensor detects non detergent, so the detergent pump will not be activated. Refill the detergent tank with detergent or water. 4c The detergent pump is damaged or clogged or the circuit is damaged or has leaks. Check the voltage to the detergent pump when activated, in case of voltage, but the pump not working, replace it with a new pump. Check if the pump circuit is clogged by detergent that has dried or crystalized into the circuit. 4d If the electronic card may be burnt or damaged, follow the instruction at the point 1c to remove and replace it. Pag. 30

31 5. Vacuum turbine not working or the suction is poor 5) TROUBLE: Activated the vacuum motor, the vacuum to the accessory is very poor or the turbine do not function at all. CAUSES: 5a Vacuum motor/turbine burnt or damaged 5b Handgrip vacuum control switch not working 5c Plug that connects hose and machine is not electrically connected 5d Electronic card burnt or damaged. 5e Water level sensors that determine the level of water for dust filtering into the vacuum tank, are intervened 5f The vacuum power is adjusted at minimum position REMEDIES: 5a If activating the turbine it is powered but does not work, means that its electric motor is burnt, or the carbon brushes are totally weared. In this case open the machine cover shells and proceed with the turbine replacement. 5b The electric controls on the hand grip, are used intensively and after a certain time, may have problems and is necessary to replace them. Open the handgrip with a screwdriver and by using a solderer, disconnect and replace the defective one with a new part. Pag. 31

32 5c If the plug that connects hose and machine is not electrically connected the steam cannot be sprayed from the lance. Check both the plug and the socket and restore the electrical connections. 5d If the electronic card may be burnt or damaged, follow the instruction at the point 1c to remove and replace it. 5e The water level sensors, that determine the level of water that has dust filtering function, that are located into the vacuum tank, are intervened. The dust filter, on this steam machine, is obtained with the water. In the vacuum tank, as described into the instruction manual, there are a couple of centimeter of tap water; the vacuum air stream crosses the "water filter", so generates a lot of bubbles and of turbulence, in this way, the water washes the air as a filter and restrains the dirt. Sometime, moving the machine, or if the dirt collected is with foamy detergent, the water can touch the sensors that are into the vacuum recovery tank, and the turbine is so deactivated. This water level control, is necessary to avoid that moisture and water may enter into the turbine causing oxidation and functioning problems, in short time. If the water level into the drum is too much, drain out a little quantity of water to avoid of activate the sensors. If the water is foamy, change it with fresh water to restore the vacuum functioning. 5f The vacuum power is adjusted at minimum position. After reading the user manual, you will understand that when is activated the vacuum system, by pressing the vacuum button on the handgrip, the vacuum starts with the maximum power. Keeping pressed the button, automatically the vacuum power is reduced step by step at two lower power levels. This is the vacuum power adjustment system, in order to calibrate the vacuuming power in according with the cleaning needs. Follow this instruction to increase or reduce the vacuum power. Pag. 32

33 6. The steam delivery or the vacuum system are working continuously and cannot stop. 6) TROUBLE: Switched off the control switches on the handgrip, the steam stream do not stops. CAUSES: 6a Steam electro-valve defective or locked in position open 6b Switches placed on the handgrip defective or wires wired into the hose that are damaged and in short circuit. 6c Electronic card burnt or damaged. REMEDIES: 6a The steam electro-valve is locked open. Can be a problem to the electro-valve piston that is deformed and does not slide on its brass body. We suggest the replacement of the whole electro-valve. 6b Switches placed on the handgrip defective or wires wired into the hose that are damaged and in short circuit. The electric controls on the hand grip, are used intensively and after a certain time, may have problems and is necessary to replace them. Open the handgrip with a screwdriver and by using a solderer, disconnect and replace the defective one with a new part. Also the accessories hose is used intensively and in particular is pulled, twisted, squeezed and this can cause damages the electric wiring inside that can lose the insulation or short-circuits causing problems. Check and remove any possible failure to the wiring inside the flexible hose. 6c If the electronic card may be burnt or damaged, follow the instruction at the point 1c to remove and replace it. Pag. 33

34 7. Limestone cleaning procedure. On average, this operation should be carried out after every 100 hours of operation. If the appliance is used with especially hard water (>30 Fr), carry out maintenance more frequently. Important: all the operations described below must only be performed when the machine is cold, disconnected and out of service for at least 4 hours. Instructions for cleaning the boiler: 1. Disconnect the machine from the mains electricity supply 2. Unscrew the cap located underneath the machine using a spanner Pag. 34

35 3. Empty the water and residual limestone from the boiler 4. Close the drain cap located underneath the machine after having drained the boiler. It is advised to replace the o-ring of the cap (see spare parts manual). Pag. 35

36 5. Open the machine cover and remove the level sensor located above the boiler 6. Fill the boiler with two liters of normal alimentary white vinegar 7. Clean and reinstall the level sensor 8. Connect the machine to the power supply 9. Start the machine, making sure that the steam delivery switch on the handle is in the OFF position 10. Wait until the machine is in steam ready status, the warm-up needs at least 30 minutes 11. Switch-off the machine, disconnect from the power supply and leave the vinegar mixture in the boiler for at least 4 hours 12. Unscrew the cap located underneath the machine using a spanner 13. Empty the residual limestone and vinegar mixture from inside the boiler 14. Remove the level sensor located above the boiler 15. Leaving the boiler cap off, pour clean water into the boiler so as to rinse the boiler and eliminate any residues 16. Close the cap located underneath the machine and reassemble the level sensor located above the boiler 17. Start the machine again following the start-up procedure described in the instruction booklet Pag. 36

37 Check the power cord and the steam couplings. Limestone cleaning procedure Check and adjust of the safety devices or components Lubricate the accessories coupling with silicone grease Periodical maintenance Every day Every 50h Every 100h Every year Pag. 37