Thermo 3920, Руководство по эксплуатации и техническому обслуживанию

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Model 3920 __________________________________________________________________Control Panel Operation
3 - 2
3.2 Setting the Incubator’s Operating Temperature
(Figure 3-3)
The Watlow temperature
controller’s upper numerical
display shows the actual tem-
perature inside the incubator
chamber. The lower display
shows the temperature setpoint.
To raise or lower the set-
point, press the up or down
arrow. Temperatures are set in
0.1°C increments.
3.3 Programming the controller
The Watlow temperature controller has been set at the fac-
tory to operate the incubator within the specifications listed in
Section 6 of this manual. Reference copies of the Watlow con-
figuration records are included at the end of Section 2 of this
manual.
To prevent tampering, mechanical and software lockouts
are employed in the system. These lockouts must only be
removed by persons skilled in configuring controller software.
Making program changes to the temperature con-
troller will seriously alter the performance of the
incubator and therefore must be made only by
qualified persons. The controller should not be
reconfigured without first consulting Technical
Services Department, at 1-888-213-1790.
a. Removing the mechanical lockout
Make sure the unit is
turned off.
Wearing a grounding wrist
strap or maintaining constant
contact with the metal cabinet,
press in the four locking tabs
on the frame of the
Temperature controller. There
are two tabs on either side as
shown in the front and side
views in Figure 3-4. When all
tabs are unlocked, pull the con-
troller module out of its frame.
Looking at the top of
the module, locate the red
DIP switch indicated in
Figure 3-5. With a finger-
nail or small screwdriver,
turn off SW #2 by moving
the white toggle down or
towards the front of the
module.
Very carefully, replace
the module into its frame
and press firmly on the top
and bottom of the bezel
until all four locking tabs
“click” into place.
b. Removing the Software Lockout
Press the up arrow and down
arrow keys at the same time and hold
them for about three seconds. The
words “inpt” (input) and “set” will
appear in the top and bottom dis-
plays. (Figure 3-6) If numbers in the
bottom display begin to scroll up or
down, the keys have not been
pressed simultaneously. Try again.
Press the up arrow until “gLbL”
(global) appears in the upper display.
The word “set” will remain in the
lower display (Refer to Figure 3-7).
Press the Mode key to scroll through the menus until the
upper and lower displays show “2 Loc” (Figure 3-8).
G
H
I
Press Press
Press
Press Press
Press
Front View
Side View
Figure 3-3
Figure 3-4
Figure 3-5
Figure 3-6
Figure 3-7 Figure 3-8