Cole Parmer 39063-00 Handbuch - Seite 4
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WARNING
To reduce the risk of electric shock, disconnect from
power source before servicing.
Before re-applying power, after maintenance is complete,
check to ensure that safety ground is intact and making a
good connection.
CLEANING
Disconnect incubator from power source. Immediately
clean all spilled materials from the incubator and wipe dry.
If necessary, moisten a cloth with soap and water and clean
inside and out. Do not use any harsh chemical cleaners.
DEFROSTING
Periodic defrosting may be necessary. The time between
defrosts depends on operating temperature, ambient
humidity and moisture from samples. Time between
defrosts may be from 30 days to years.
Suggested defrost methods.
Method I: For control setpoint down to 10°C, this method is
the least disruptive, if samples can withstand temperature
stability of +/- 1.5°C for 24 hours. Samples may remain in
chamber during this procedure.
1. (Refer to Accessing Controller Menus) Press and hold
MENU key until CAL is displayed, then release and press
MENU again until Pct is displayed.
2. Select 50 in the Pct menu then press MENU key twice to
return control mode.
3. Allow incubator to remain in this mode for about 24 hours
or until frost disappears.
4. Use the MENU key to re-establish the previous selection
for Pct (i.e. 100).
Method II:
1. Remove any samples that may be damaged by
temperatures up to 35°C.
2. Refer to Accessing Menu section of manual and set Pct
parameter to 00.
3. Place Setpoint to 35.0°C.
4. Allow temperature to stabilize, for 1 hour.
5. After 1 hour, remove power from unit. Open door and
wipe up any excess moisture on floor of chamber with
paper towels or sponge.
6. Apply power and set desired operating parameters back
into controller. After chamber temperature stabilizes, place
samples previously removed back into unit.
CALIBRATION
If it becomes necessary to calibrate temperature controller,
perform the following:
1. Place an accurate temperature-measuring device in the
geometric center of the chamber.
2. Set the controller to the desired operating temperature in
100% cooling mode and allow 2 hours for stabilization.
3. Note the chamber temperature on the controller display
and the temperature at the geometric center.
4. Subtract the chamber display reading from the geometric
center reading.
5. Enter into the Calibration Mode as described in
Accessing Menu.
6. Press and hold SET key, using the ∆ or ∇ keys, set the
calibration parameter to the value determined in step 4.
7. Allow unit to stabilize for 1 hour and check that controller
value and geometric center value agree ±.2°C. Repeat
calibration if necessary.
Replacing Temp. Controller:
1. Disconnect incubator from power source.
2. Remove front panel bezel by removing four screws in top
and bottom of bezel.
3. Remove four screws that mount controller to mounting
bracket.
4. Note wire colors and positions on TB1 and TB2, then
remove all wires from TB1 and TB2 and remove old
controller.
5. Locate switch DS1 on lower left corner of new controller
and set the switches as follows:
Set DS1-1 (A) to off (up).
Set DS1-2 (B) to off (up).
6. Attach wires previously removed from old controller to
new controller.
7. Mount new controller and bezel, then apply power.
8. Refer to Calibration section of this manual, to calibrate
new controller.
Replacing RTD Temp. Sensor:
1. Disconnect incubator from power source.
2. Refer to Replacing Temp. Controller, but only remove
sensor wires from TB2.
3. Open incubator door, remove Sensor on door bracket.
4. Remove old sensor, then place new sensor on bracket.
5. Connect new sensor wires to controller then mount
controller and bezel.
6. Apply power, then refer to Calibration section.
Replacing SSR1, K1, K2 or T1:
1. Disconnect incubator for power source.
2. Remove screws from lower back panel then tilt back
panel out.
3. Locate device to be replaced on back panel then remove
mounting screws.
4. Unplug quick connect terminals, noting positions.
5. Place quick connects on new device and mount on back
panel.
6. Replace back panel, then apply power.
7. Refer to General Functional Checks to ensure that new
device is operating.
Replacing FAN2, THM1, HTR1:
1. Disconnect incubator from power source.
2. Remove shelves from chamber area.
3. Remove heater cover at top back of chamber by
removing 2 screws on either side.
4. Replace the THM1 or HTR1, if necessary, then coat
electrical connections with RTV102 or other electrical
insulator. To replace Fan, remove HTR1, then remove 4
screws that hold Enclosure, then replace Fan.
5. Re-assemble in opposite order as previously described.
6. Apply power, refer to General Functional Checks to
ensure that new device is operating.