Maintenance regulations Service intervals SCA

Transcription

1 Page : 1 / 6 1. Service Intervals for the Coffee Machine Servicing must be carried out every coffee servings or 12 months C = Check A = Components relevant to safety (see item 3) Nos = check list numbers (see item 2) SAG After cups per piston According to counter status Part reference Stock or after 12 months indicated or after xx months No C R R Hot water Boiler 2kW A Hot water Boiler 3kW A months (item 3.1) Supply tube Tube safety valve Safety valve 12bar A R 3/2-way brew valve R 2/2-way bypass (Hot water out let) /2-way bypass valve /2-way HW splash valve (Milk) Booster Steam boiler 2kW A Steam boiler 3kW A Supply tube Level sensor Safety valve 5bar A R Tube - safety valve /2-way steam valve (Steam outlet and Cappuccinatore) R = Replace /2-way supply valve /2-way change over valve (steam outlet rinse) months (item 3.1) Grinder motor / 6 600min Grinding discs kg Brewing unit Inlet piston R Outlet piston R Inlet/outlet piston O-ring R Drive motor Flowmeter (071'540) months Non-return valve months Water pump Water pump for motor Squeeze valve Air pump months or 450h. Teflon tube diverse months Tube milk system (DA System) / 109 R Silicone hose air pump diverse R Hose (mixer chamber outlet 470mm) R Issued / H.U. Hostettler Verified / A. Dellsperger Released / H.U. Hostettler

2 Page : 2 / 6 SAG After cups per piston According to counter status Part reference Stock or after 12 months indicated or after xx months No C R R Connecting hose months Discharge tube months Coffee/milk outlet Seal, mixer motor Seal, mixer chamber Mixer motor complete R 6000 Connection mixer R 2. Check number data Visual inspection of the hot water boiler or and the steam boiler or If one of the boilers is leaking and there are external signs of calcification at the heating connections or solder points, the boiler needs to be replaced and the water quality (PH) must be verified. - If one of the boilers is heavily calcified inside, it needs to be replaced. - Decalcifying the hot water or steam boiler is not permitted. - The check routine must be entered into the certification document, see item 3. - Check the casing of the temperature limiter (KILXON marked with circles) for damage and whether the connectors are showing signs of melting/burns. - If it is not possible to seal the temperature sensor or the supply tube after the heating element has been checked it can be sealed using the copper seal Visual inspection for seal and calcification, in particular the lateral holes are to be checked. (see picture ; arrow) If the lateral holes are calcified, this would normally mean that there is a defect in the safety valve. That means water is flowing out through the safety valve continuously. 2.3 Visual inspection for lime scale, damage, soiling and tightness of the tube.

3 Page : 3 / Visual inspection for lime-scale and seal 2.5 Visual inspection of the stainless steel valve body and the plunger housing for calcification, soiling and damage. If no damage is present, clean both components. Assemble the individual solenoid valves using their corresponding sealing set (plunger including seal and spring): Sealing set 071'041 for 2/2 solenoid valve / and sealing set 071'042 for 3/2 solenoid valve Check the drilled hole in the booster for lime deposits and coffee residues. If it is heavily soiled, the booster must be replaced completely. Check the booster temperature after the machine has been switched on. To check whether the temperature regulation works (110 C) push the operator button. 2.7 Check the condition of the grinder motor and the empty detection functionality of the grinder. 2.8 From a counter value of 500 kg (approx. 9 g / beverage), the grinding discs must be checked for wear. If the grinding discs are blunt, both the grinder resistance and the amount of dust created during the grinding process increases. This can cause the grinder to become blocked and the brewing unit to become clogged. The following signs indicate that the grinding discs are blunt: - Visually check the grind level for the grain size of the coffee powder. - Visually check the beverage for poor crema formation and excessively black edges (dust particles). If these signs occur, the grinding discs must be replaced as follows: - Replace the grinding discs in pairs. - When installing the grinding discs, ensure that the inner diameter of both discs is different. - The smaller inner diameter is installed at the bottom and the larger one at the top.

4 Page : 4 / The inlet piston 062'316 and the outlet piston 065'310 have to be replaced. Replace O-rings 065'190 and grease lightly with a food grade grease 067'399. The brewer should be lubricated as per lubrication overview We recommend replacing the brewing unit every strokes. After cleaning the device, including the hose connection 065'308, a function and leakage test is to be run Check the motor for slack on the housing connection and on the drive shaft. Check that the 36VDC Brewer motor is mounted free of slack. The A screws should be tightened to a torque of 10Nm and secured by using Loctite 243. B The gear unit must be assembled free from slack and is secured using two screws B M6x and M6x The flow meter should be checked for lime scale, soiling, and mechanical wear. After opening, replace O-ring 064'464. A 2.12 Inspection of the non-return valves for lime-scale and tightness opposite the direction of the arrow. No Flow 2.13 Check the pump for tightness, noise and performance. Disassemble the pump pressure setting device for Standex pump or for the Fluidotech pump , clean or replace it. Lubricate the O-ring moderate with foodquality grease 067'399 and reassemble the setting device. Check the pump pressure setting of bar against the closed system using the software routine Flow

5 Page : 5 / Check the function of the water pump for the motor and the bearings. If the bearing is defective the motor is noisy, the motor have to be replaced Check that the milk squeezer valve functions properly: the silicone hose must be sufficiently squeezed and then released Check that the air pump functions properly and check the air line for dirt/contaminants Visual inspection of the hoses for lime-scale, damage, soiling and leaks. The milk hose must be replaced Visual inspection for tightness (sealing at the connecting point). If the protection cover is damaged, the hose must be replaced Check machines equipped with a waste water connection to ensure that the water can drain without problems and that the hose does not leak and has not become brittle The plastic parts from the coffee/ milk outlet have to be cleaned and checked for damage. If the height adjustment from the coffee/milk outlet doesn t work anymore (doesn t stay in the favoured position) the complete outlet has to be exchanged Replace V-ring of the motor (item 1) and the O-ring mixer cup (item 2). Replace the motor completely after beverages. Check that the power dosing unit functions properly and check for dirt/contaminants. Clean or replace the mixer parts. Replace the hose connection for mixer During each service, any components not listed on pages 1 and 2 of the maintenance regulations for SCA must be checked and replaced if necessary If the parts are extremely calcified, the carbonate hardness (lime content) of the supplied water has to be checked and appropriate measures have to be taken. After the service the following parameters should be checked, and if necessary corrected: The pump pressure must be bar (in a closed system, using the software routine) The outlet temperature for coffee must be C and hot water C The milk outlet temperature must be at least C Is the foam quality O.K. and is the outlet temperature C? The grinding degree (size of the grains) The amount of grounds for a coffee/espresso 8 9gr. or customer specifically The filling quantity (brewing water) in the cup or mug Together with the booster function you must check how the drainage works through the 3 way tube. The machine should be thoroughly cleaned and left in optimum condition. If the job can only be carried out at a later date, the customer should be informed and this should be noted on the service report. Pos1 Pos2

6 Page : 6 / 6 3. Safety Relevant Parts A 3.1 For safety reasons, the hot water and steam boilers have to be replaced every 60 months. Decalcifying the hot water or steam boiler is not permitted. 3.2 Each time the hot water boiler / or the steam boiler 063'300 / is checked, the relevant test certificate in the machine must be filled out. When a boiler is replaced, the test certificate for the new boiler must be included. The document must always correspond to the boiler installed (serial number). 3.3 For safety reasons, the safety valves for hot water and the safety valve for steam must be replaced every 12 months. 3.4 When installing the 5 bar safety valve on the steam boiler, it is also necessary to install the safety thermostats with an opening temperature of 150 C. The 155 C safety thermostats must be replaced. 3.5 If a part is defective and cannot be repaired, it must be replaced. Components relevant to safety such as the hot water boiler, the steam boiler and the safety valve must not be repaired (always replaced). 4. Requirements for smooth operation Schaerer confirms that the SCA coffee machine is suitable for commercial restaurant use where cups per day or within a period of 12 months can be obtained under the conditions mentioned below. 4.1 The coffee machine must be connected up to drinking water with 1-3 bar water pressure. 4.2 The water must be free of contaminants and the chlorine content may not exceed 100 mg/l. 4.3 Do not use RO water (Reverse Osmosis) or any other type of aggressive water. 4.4 The carbon hardness may not exceed 8 12 fh or 4 6 dh hardness must be always higher than the carbon hardness 4.5 The ph value must be between 6.5 and The mains voltage may not exceed the tolerance of +/- 5%. It has to be observed that the machines are used according to country specific voltage supply. 4.7 The unit must be cleaned in accordance with the operating instructions or the quick reference card which are supplied. Please ensure the usage of the cleaning agent recommended by the manufacturer. The operating personnel have to be trained sufficiently. 4.8 The machine must be serviced after every servings or every 12 months and all necessary repairs and replacements have to be carried out. 4.9 The local customer service must be fully trained and has to have the necessary spare parts and tools to carry out repairs. 5. Non-compliance 5.1 Schaerer shall not be liable for any damages or losses, either for its contractual partner or for any third party, resulting out of the non-compliance to these maintenance regulations. 5.2 The maintenance regulations are valid in the form in which they are in force at each point of time. The contractual partner of Schaerer shall follow them immediately after receipt of a new version and impose them on all employees, representatives, partners, purchasers, etc. He is fully liable to Schaerer for the compliance of these terms. He shall hold Schaerer free and harmless from all claims of loss or liability, for direct or indirect damages (including costs for representatives) resulting out of the violation of these terms.