Sunday, August 16, 2009

8/16/09 Tech Log Blog


Elektra Maxi

This week saw a repair on a commercial 2 group Espresso Machine by Elektra.

Some notes on the design:
Elektra (e-61 type) groups
Steam & Water paddle valves (cool)
Retro post modern design

Reason for Service: Owner states left group no flow. Owner wants to sell machine so wants a tune up and complete service.

Diagnostic & Repair: Left Group has completely jammed with mineral deposit. Leaky safety valve, vac valve & mineral stains on exterior of boiler suggest excessive scale build up throughout. Removed L group and completely disassemble & acid bath. Solenoid stem is packed with scale. Group head scale blockage requires careful removal by power drill (nice that Elektra has a purge hole at front of group). WOW that was a lot of scale! R group not as bad with scale - Cleaned out and tested; ok.

Descale main boiler and HX's
Replaced vac valve and safety valve
Test for temp & pressure



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