by orphanespresso on Fri Jan 01, 2010 6:26 pm
Hello All and Happy New Year! I have read through this long and interesting post about the new Maximatic and have just had the opportunity to address one of these machines from a technician's perspective. there has been a lot of discussion about price/value, build quality etc, but what about when the machine requires service?
The machine in question is a 2002 model which is virtually identical to the newest build, but with the earlier large brass jacketed pstat and no allowance for removing the sight glass tube through the top of the brass junction boss, and yes a manometer with a stop pin, etc. It came to me with a number of small leaks a history of chewing up steam wand swivel o rings....not to mention low/fluctuating pressure and temp. The machine had a previous factory service to address a manufacturing problem with the boiler welds so it had been obviously taken completely apart for this service and reassembled, which possibly resulted in the small problems it was having.
I found a leak at the upper sight glass fitting which turned out to be a cracked glass tube, a leak at one of the top serto banjo bolts that fed the pstat resulting from a crushed banjo bolt, some general maintenance issues (the group dispersion screen screw was overtightened and could not be removed resulting in a plugged group). Servicing these issues was very labor intensive, likely due to the miniaturization of the machine....and I will add that I admire the build on the Olympia machines and the engineering that goes into them....this post is not a critique of Olympia in any way, but a report from the front.
To address anything wrong with the sight glass tube requires removal of the boiler from the machine vs the old method of removing the pstat and front cover to R and R the tube with the boiler et al attached to the frame. The boiler is easily removed after detaching the front panel all of the serto fittings to the front of the machine, but the sight glass cannot be serviced in a straightforward manner as it is tucked into the corner of the frame with no access for a 19mm wrench.
Their Serto banjo fittings are fantastic as they allow easy alignment of the connections for the various components BUT, and there is always a BUT, these fittings must be tightened with absolute precision and care. The most difficult leak to find and fix was at one of these fittings. The Serto fittings seal on the end of the fitting against a small brass flat washer inside the female part and the banjo bolts use a copper crush washer on top of the collar. The banjo bolt itself is very thin in the area where the water passes and the slightest overtightening can shatter the inner bolt. This was the case in my patient. The original assembly was likely very precisely done, but once the first torque down is made one must be VERY careful about the reassembly of these fittings, likely requiring absolutely the use of new washers in the fittings with any reassembly or tightening.
As has been discussed and speculated upon, the price of this machine is quite steep but the quality is top rate and the parts fit together perfectly.....but from a service perspective the owner I think should be prepared for some high labor cost on a repair involving boiler removal, and we all are familiar with the sometimes shocking cost of some of the mostly proprietary parts for these machines. They are fairly service friendly but one must always proceed with caution and care due to the precise nature of the assembly and build of the machines.
Not to detract from what seemed like a final post on this topic....just wanted to add a small perspective that has not been covered.