Operating instructions

PERFECT page 8
4.1 Standard equipment of PERFECT ovens
Electronic fuzzy-supported PID process controller with permanent power matching and time-saving •
auto-diagnostic system for rapid fault finding (see Section „Error messages“)
Language selection•
Alphanumerical text display•
Internal report memory 1024kB for storing actual temperature, setpoint temperature, fan, air valve •
and error states with time stamp
Control of oven and documentation of actual values on MEMoryCard XL•
Programme sequence control for up to 40 ramp segments•
Fan with speed adjustment on recirculation ovens (adjustment in 10% steps)•
Air valve with servo adjustment (adjustment in 10% steps) for recirculation or fresh air operation•
Integral weekly programmer with group function (e.g. all workdays)•
Recessing push/turn control for simple operation of oven•
Visual alarm indication•
Built-in sounder as alarm on overlimit, as audible signal at programme end, and to acknowledge •
input (key click)
Digital monitor controller for overtemperature, undertemperature, and as automatically setpoint- •
following monitor (ASF)
Mechanical temperature limiter (TB Class 1)•
Monitor relay to switch off heating in case of fault•
Two separate PT100 temperature sensors Class A in 4-wire circuit for control and monitoring•
Convenient integral 3-point temperature calibration•
Temperature-dependent ventilation of control panel and door•
Parallel printer interface (PCL3 compatible)•
Serial RS-232C interface for computer-supported temperature programmes and for reading the •
internal report memory
MEMMERT software “Celsius 2007“ for remote operation of oven via a PC and for reading the •
report memory inside the controller
A pre-formatted blank MEMoryCard XL with 32 kB storage capacity, reprogrammable for up to 40 •
ramp segments and additionally 270 hours report memory at 1 minute intervals
Special equipment (to be ordered separately as accessories): subframe, wall bracket, wire shelf, •
sterilisation cassette, cable RS232C to DIN 12 900-1, external card reader for MEMoryCard XL for
connection to the PC RS232C interface, 25-way printer cable (parallel, screened)
4.2 Material quality
For external housing MEMMERT employs stainless steel (Mat.Ref. 1.4016). The chamber is made from
stainless steel (Mat.Ref. 1.4301) which exhibits high stability, optimum hgygienic properties and corrosion
resistance against many (not all) chemicals (warning against e.g. chlorine compounds).
The oven load has to be checked carefully for its chemical compatibility with the above materials.
A compatibility table covering all these materials can be requested from MEMMERT.