Pamper you La Pavoni!
Standard Lever Seal Service Schedule
1) Machine is inspected and any obvious faults rectified. Any bent or dented parts are straightened if possible.
2) Static and insulation resistance of the element(s) are measured, internal wiring, mains cable/plug are checked for damage, overheating or insulation cracking/ageing. In older machines, additional ground points are made if required.
3) Lever pivots, pins and roller are checked for wear.
4) The group piston is removed and the piston, cylinder and piston shaft checked for any unusual wear. Piston shaft if scuffed is polished with fine emery cloth. Any build up of rubber or coffee oils are removed from the cylinder walls with fine wire wool. If the model has a plastic cylinder sleeve, it is checked later for leaks
5) Plastic base, group. piston, piston shaft, filter basket, shower screen, portafilter (the threaded stud is removed and rust treated if required), lever, steam wand (nozzle is removed and cleaned as is the pipe of any debris) are cycled on an intensive dishwasher program.
6) Seals replaced and group reassembled.
7) Shower screen and filter basket are checked and cleared of any blocked holes. Shower screen is re-fitted in group with new seal.
8) Safety valve is disassembled and checked, the valve seat polished. If it is an anti vacuum type and is found to be leaking it is repaired by replacing the silicone seal, o ring and circlip.
9) Steam tap is disassembled and the seal replaced, valve pin (not seat) is refaced if required. The assembly is replaced in the tap body and the tap checked for leaks when fully closed.
10) Machine is reassembled and pressurised using a hand pump to check for leaks, if required, joints remade using food safe teflon sealant or where seals are used, replaced.
11) Boiler is filled with water and allowed to pressurise with steam and is checked once again for leaks inside the base and left on for at least an hour.
12) Pressure gauge if fitted has zero reset and checked for accuracy by comparison with a standard.
13) Pressure-stat if fitted is removed and the pressure pipe cleared of any scaled blockages. Pressurestat is refitted and the micro switch adjusted to the factory setting of 0.9-1.0 Bar and the deadband if necessary adjusted.
14) The pressurestat if fitted is then overridden and the safety valve operation pressure of 2 Bar checked and adjusted.
15) Lever operation/steam tap is tested make sure there are no leaks and water and steam are being delivered. If the machine has a plastic group sleeve and the group is leaking, it is removed and the seal replaced.
16) Boiler is de-scaled with citric acid.
17) Chrome is cleaned and polished (no abrasives used).
18) Earth bonding and then insulation resistance (@500v) is checked before return.
Any issues found are identified and a estimate given for the work, You decide how much you want done, e.g. rusty base, worn pivot holes, element repair/replacement etc..
