ThermoForma 3033, Руководство по эксплуатации и техническому обслуживанию

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Section 5 - Service
Servicing must be performed by
qualified service personnel only!
5.1 Fuses
Two North American UL and/or CSA 250VAC time-lag
fuses are located behind the side access panel on the component
mount. (See Figure 8-1) To gain access to the fuses, remove the
cabinet side panel. Replace the fuses with fuses of the same
type and rating.
The following chart identifies the fuses in the unit and their
characteristics.
5.2 Calibration
Frequency of calibration is dependent upon use, environ-
mental conditions and accuracy required. Thermo Forma rec-
ommends calibration every three to four months.
All incubators are factory calibrated. However, the incuba-
tor should be run and checked for proper operation prior to
being put into use. Before making any calibrations or adjust-
ments to the unit, it is imperative that all reference instruments
be in good repair and properly calibrated.
a. CO
2
Calibration
Equipment required: Fyrite or another independent method of
CO
2
measurement.
1. With the CO
2
supply connected, adjust the CO
2
to the
desired level.
2. If the unit is already operating, allow 30 minutes to sta-
bilize. If the unit is being started up and is cold, allow
two hours for stabilization.
3. When the incubator has stabilized, turn the Program/
Run key switch to Program.
4. Turn the incubator power switch off.
5. Press and hold the inverted Y button on the CO
2
module
while turning the Power switch on. Continue to press the
inverted Y button until the “beeping” stops.
Note: When entering the calibration mode, the temperature dis-
play will read 00.0 and the RH display will show the CO
2
sen-
sor output voltage in millivolts. (This value can be used for
diagnostic purposes by service personnel.)
6. Press the inverted Y touch button on the CO
2
module so
that the word SET appears in the LCD window. This
puts the module into the Span Adjust mode.
7. Remove the cap from the Sample Port on the
front of the control panel and read the CO
2
con-
centration with the Fyrite. Two readings should
be taken.
8. Using the up or down arrow buttons, change
the CO
2
display to match the Fyrite reading.
9. Disconnect the reference instrument and
replace the Sample Port cap.
For proper operation and to prevent CO
2
loss, the
sample port must be capped when not in use.
10. Turn the incubator power switch off, then back on with-
out pressing any buttons.
11. Return the Program/Run key switch to Run.
Model 3033 and 3860 Series _________________________________________________________________Service
5 - 1
Incubator Model Fuse Stock # Amp/Size/Rating Rupture Speed IEC Letter
Code
3033, 3860
(main)
230066
250V, 10 Amp Time-Lag T
3035, 3862
(main)
230093
250V, 5 Amp Time-Lag T
All Models
(power supply)
230103
250V, 0.75 Amp Time-Lag T
All Models
(accessory)
230120
250V, 0.5 Amp Time-Lag T
Contains Parts and Assemblies
Susceptible to Damage by
Electrostatic Discharge (ESD)
CAUTION
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