Memmert TTC 256 Temperature test chamber (Generation 2003) - Manual (Page 61)

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Maintenance and Servicing
8. Maintenance and Servicing
Warning!
Depending on operation, the surfaces in the chamber interior may
be very hot or very cold. You could suffer from burns or frostbite if
you touch these surfaces. Before any maintenance / cleaning work,
allow time for the chamber interior to reach room temperature.
Warning!
Disconnect the power plug before any cleaning or maintenance
work.
8.1 Basic cleaning
Regular cleaning of the easy-to-clean chamber interior, prevents build up of material remains,
which over time could impair the appearance and functionality of the stainless steel chamber.
The metal surfaces of the chamber can be cleaned with normal stainless steel cleaning agents.
Make sure that no rusty objects come into contact with the working chamber or with the
stainless steel housing. Rust deposits lead to an infection of the stainless steel.
If rust spots should appear on the surface of the working chamber, due to impurities, immedi-
ately clean and polish the affected area.
Do not clean the operating panel, the plastic input module and other plastic parts of the
chamber with abrasive or solvent-based cleaning agents.
8.2 Intensive cleaning
Cleaning surfaces of the interior that are otherwise not accessible is possible after the side
walls and rear wall have been dismantled:
1. Pull out the silicone plugs, remove the 8 Allen screws each on the left and right side walls
and remove the walls ( Fig. 36 ).
2. Pull both temperature sensors from their sockets and let them hang down ( Fig. 37 , A).
3. Dismantle the rear wall of the test chamber; to do this, remove the 4 screws in the corners
and 2 screws beneath the fan and pull out the metal plate at an angle (Fig. 36). Make
sure that the temperature sensors are guided through the opening in the steel plate and
remain in the interior.
4. The exposed surfaces can now be cleaned.
5. When cleaning is finished, push the rear wall at an angle back into the test chamber.
Thread the two temperature sensors through the opening in the metal sheet ( Fig. 37 , A).
6. Tighten the test chamber rear wall with 6 screws.
7. Plug temperature sensors (A) into their sockets.
8. Insert the side interior walls on the left and right and tighten them with 8 screws each
( Fig. 36 ). Reinsert the silicone plugs.