CytoTherm CT-4T Panduan Pemilik - Halaman 5

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MODES

STANDBY MODE. Just turn the unit ON. The unit recirculates the water in the BATH, The unit heats

up and maintains 37.0

THAWING MODE. The unit continues recirculating tempered water through the BATH and rocks the BATH to

provide mixing of the plasma inside the plasma bags. A count-down timer is started to display the time-to-

completion of thawing. START initiates thawing. Timing out or pushing STOP stops thawing.

DIAGNOSTIC MODE. Is for technician access. Hold MINUS as you turn the unit ON.

1. To restore the unit to initial factory settings, press ENTER while still holding MINUS. The unit

displays "UNIT RESET". Turn the unit off. You have to re-calibrate the temperature after

resetting the unit.

2. "PUMP TEST" is a diagnostic tool to check if each actuator turns on. It is checked only when a

pump does not operate. Release MINUS then push ENTER to verify that you are a technician. The

display shows "PUMP TEST". MINUS turns on Pump 1, ENTER turns the rocking motor. Push

PLUS to go to next function.

3. Overtemperature Alarm Test. Hold MINUS as you turn the unit ON. DIAGNOSTICS will be

displayed. Push ENTER. Push and release PLUS until ALARM TEST is displayed. Push

ENTER, the heater will heat continuously and the pumps will turn on. When the temperature

reaches 1.0C above the target temperature the alarm will sound. Turn Off the unit. If alarm does

not sound, contact CytoTherm. Alarm test should be performed every 3 months as part of unit

maintenance.

PROGRAM MODE. Allows you to:

Program the thawing time.

2. Calibrate the temperature.

3. Set the target thawing temperature. The Alarm temperature is 1.0C above the target temperature.

4. Select the signal when thawing is done (continuous or pulsed).

Enter PROGRAM MODE by holding ENTER while turning the unit ON. Follow the displayed

instructions to program. Pushing PLUS advances the menu to the next parameter.

Programming the Thawing Time. When the thawing time is displayed, press MINUS because you want

to change the time. Use PLUS or MINUS to set the desired new thawing time, press ENTER to

program in the new time. Turn the unit off.

Calibrating Temperature. Turn the unit on and let it heat up to 37.0

temperature with your accurate thermometer. Hold or hang your thermometer so the end is in the

water in the bath. If the displayed temperature needs to be changed, turn the unit off. Enter

PROGRAMMING MODE by holding ENTER as you turn the unit on. When the thawing time is

displayed push PLUS until the display shows "CALIBRATE TEMPERATURE". Push MINUS

because you want to change the displayed temperature. Use PLUS or MINUS to make the displayed

temperature agree with your thermometer. Push ENTER to record the calibration. Turn the unit off.

If the unit can not be calibrated, or if the calibrated temperature is not stable, have a technician check

the unit. See TECHNICIAN FUNCTIONS.

SWITCH FUNCTIONS There are 6 switches on the front panel:

START. Starts function.

STOP. Stops function.

ENTER. Records parameter changes.

PLUS. Steps through parameters and increases value of parameter.

MINUS. Allows change in parameter and decreases value of parameter.

Sketch of FIN logo. Not currently used. Future expansion.

C in the BATH.

C. Check the displayed