TXS Plasma Freezer

To clean the cabinet interior, remove the shelves, drawers, or baskets. Use a solution of water and a mild detergent for cleaning. Rinse the interior storage components and wipe them dry with a soft cloth.

Clean the condenser filter every three months. There is one condenser filter located in the back cage of the unit that can be accessed without removing the back cage or disconnecting the power. To clean the filter, complete the following steps:

1. Remove the filter by pulling upwards through the slot in the back cage.
2. Shake the filter to remove loose dust.
3. Rinse the filter in clean water.
4. Shake the excess water from the filter and let it dry.
5. Reinstall filter by pushing downwards through the slot in the back cage.

CAUTION: Risk of Abrasion. Do not pull the filter downwards from the bottom. The condenser has sharp surfaces.

Condensers should be cleaned at least every six months; more often if the laboratory area is dusty. In heavy traffic areas, condensers load with dirt more quickly. Failure to keep the condenser clean can result in equipment warm-up or erratic temperatures.

CAUTION: Risk of Abrasion. Never clean around the condensers with your fingers. Some surfaces are sharp. 

The condenser is located in the top rear of the machine compartment. To clean the condenser, complete the following steps:

1. Disconnect the power.
2. Remove the filter.
3. Vacuum the condenser and clean up any loose dust.
4. Replace the filter.
5. Reconnect power. 

The defrosting process on all -30°C freezers initiates automatically in response to a built-in timer. The defrost interval timer adapts to user conditions and will either be approximately every 6 hours or 15 hours. During this time, there may be a slight increase in display temperature. 

If a door or port has been open for an extended duration allowing room air to flow into the freezer, frost may build up inside of the freezer and negatively affect the performance of the freezer. The unit defrost may not be able to overcome this and the unit must be manually defrosted by turning the freezer off.

Periodically check the gaskets around the door for punctures or tears. Leaks are indicated by condensation or frost which form at the point of gasket failure. Make sure that the cabinet is level. Keep the door gaskets clean and frost free by wiping gently with a soft cloth. To check the door seal, complete the following steps: 

1. Open the door.
2. Insert a strip of paper (a couple of inches wide) between the door gasket and the cabinet flange and close the door.
3. Slowly pull the paper strip from the outside. You should feel some resistance.
4. Repeat this test at 4-inch intervals around the door. If the door does not seal properly, replace the gasket.

Have a certified technician replace the alarm battery every twelve months at most or when the alarm is active. The part number for a replacement battery is 322533H01.

If the unit is going to be stored in an off condition, allow the unit to warm up and dry out with the door open before moving into storage.

Cause: Power supply

Solution:

• Check that the cord is securely plugged in.
• Plug in another appliance into the outlet to see if it is live.
• Check that the double pole circuit breaker located next to the power inlet is in "ON" position. Try cycling to OFF position & then bring to ON position.

1. Cause: Temperature Control
   • Solution: Make sure that the control is set correctly.
2. Cause: Condenser clogged
   • Solution: Make sure the condenser and filter are clean.
3. Cause: Solution bottle
   • Solution: Make sure the solution bottles for the temperature sensors are full. The solution is a mixture of glycerin and distilled water.
4. Cause: Other causes
   • Solution: If the temperature control is set correctly, the condenser is clean, but temperature continues to fluctuate, call an authorized service representative.

Cause: 12V backup battery needs to be replaced.

Solution: Replace the battery. It is located on the top right hands side of the cabinet. Call an authorized service representative. 

1. Cause: Incorrect Perimeter Heater Duty Cycle.
   • Solution: Increase the Perimeter Heat Duty Cycle.
2. Cause: Gaps exist in unit port holes.
   • Solution: Ensure all port holes in the cabinet top, sides, and back are sealed properly to prevent warm airflow into the cabinet. Seal any gaps.
3. Cause: Door seal is broken.
   • Solution: Verify nothing is placed through the door seal such as a sensor. Check the door seal following instructions. 

Cause: Perimeter heater is ON

Solution: This normal function of the unit and is a result of the perimeter heater to reduce condensation. 

1. Cause: Door is open
   • Solution: Make sure the door is completely closed.
2. Cause: Door seal
   • Solution: Check the door seal.
3. Cause: Warm product recently loaded in unit.
   • Solution: Allow ample time to recover from loading warm product.
4. Cause: Power supply
   • Solution: Check for proper voltage to the unit. If there is no voltage to the unit, call an electrician.
5. Cause: Setpoints need to be adjusted.
   • Solution: Adjust the setpoint.
6. Cause: Faulty Safety Trips
   • Solution: Replace Sensor.

Cause: Invalid Algorithm

Solution: Check to ensure the model type is set correctly in service mode. 

Cause: Control probe failure

Solution: Check for loose probe connector. Replace control probe. 

Cause: Defrost Probe Failure

Solution: Check for loose probe connector. Replace defrost probe. 

Cause: Ambient Probe Failure

Solution: Check for loose probe connector. Replace ambient probe. 

Cause: Upper bottle probe failure.

Solution: Check for loose probe connector. Replace upper bottle probe. 

Cause: Lost communication

Solution: Call customer service