Sanyo MDF-U333 Service Manual page 36

１２．Offset value １２．
１２． １２．
The function is to correct differential value between temperature of temperature sensor and
of internal 1/2H (centre of chamber).
Initial offset
001 (MDF-U333): Shift –1.5℃from temperature of temperature control sensor (PV)
002 (MDF-U537): Shift +1.0℃from temperature of temperature control sensor (PV)
003 (MDF-U537D): Shift +0.0℃from temperature of temperature control sensor (PV)
Second offset
001 (MDF-U333): None
002 (MDF-U537):-18℃≧SV≧-25℃--- shift –0℃from PV (For upper, lower compartment)
003 (MDF-U537D):-18℃≧SV≧-30℃--- shift PV-2.4+(-18-SV)÷5 (For upper compartment)
１３． １３． １３．Display offset １３．
In display, temperature that is lower than SV is shown for a little time. With this case, display
offset –0.5℃should be done. (Round off numbers to the first decimal point)
１４． １４．Remote alarm
１４． １４．
During normal operation ... ... ... Remote alarm contact is OPEN
During alarm or power failure ... ... ... Remote alarm contact is CLOSE
１５． １５．Others
１５． １５．
MDF-U537: In case of : -18℃≧SV≧–25℃ with PV-SV+5℃≧0
Solenoid valve is: Forced to turn OFF
MDF-U537: In case of : PV-(SV-0.6℃)≧0 with PV
Solenoid valve is: Forced to turn OFF
-26℃≧SV -- shift +1.0 from PV (For upper, lower compartment)
-30℃＞SV --- shift –0℃from PV (For upper compartment)
(In PV-(SV-0.6)＜0, quit to be forced to turn OFF)
(For upper, lower compartment)
(For upper, lower compartment)
*Note) For lower compartment, add 0℃ to PV.
- PV
TOP
− 33 −
-1＞0
BOTTOM