Zhermack FURNACE DM 30, User Manual

Page: 169 / 272

FURNACE DM
169 of 272
MAINTENANCE AND USE MANUAL
EN
A. During Phase 1 of delayed start
If there is a mains power failure while the delayed start feature is functioning the buffer battery
immediately comes on line so as to power the clock and thus prevent any postponement of
operation.
The oven will, of course, only be able to come on and operate at the set time if, in the
meantime, mains power has been restored.
If, instead, the timer comes to the end of its countdown and the mains power is still out, the oven will
go to standby and begin the work cycle as soon as the mains power comes back on.
B. During temperature increase in phases 2, 3, 4, 5.
If there is a mains power failure while the oven is working and heating in any of the four work phases
the oven will recommence work starting from the work phase that was reached at the time of the
power failure.
The oven will heat up to compensate for the drop in temperature that occurred during the blackout
and will then run through the rest of its cycle.
C. During the holding time in work phases 2, 3, 4, 5
If the power failure occurs during temperature stabilisation the following will occur once the power is
restored:
1. if the power blackout has been brief and the melting chamber has not lost heat the oven
will immediately start re-running the entire holding time.
2. if, instead, in-chamber temperature has dropped with respect to the setting the oven will
reheat back to that temperature and then re-run the entire holding time.
B. During temperature increase in phases 2/3/4/5 (oblique green segment illuminated)
1. Pressing the red “°C” key (8) on the display (11) causes the temperature setting for the
phase in progress at the time of checking to be displayed.
• after a few seconds the display returns to its previous state.
2. Pressing the red “°C/MIN” key (9) on the display (11) causes the temperature slew rate
(expressed in °C/min) for the phase in progress at the time of checking to be displayed.
• after a few seconds the display returns to its previous state.
3. Pressing the red “HR.MIN” key (10) on the display (11) causes the holding
(temperature stabilisation) time for the phase in progress at the time of checking to be
displayed.
• after a few seconds the display returns to its previous state.
C. During the holding time in work phases 2/3/4/5 (horizontal green segment illuminated)
1. Pressing the two red keys (8) and (9) causes that which is described in points B./1.2. to
occur.
2. Pressing the red “HR.MIN” key (10) shows the hours and/or minutes remaining before
the end of the current holding time.
7.14
NO ELECTRICAL POWER