Replacing The Conductor; Preparation For Storage Or Shipment; Customer Service - BIRD Moduload 8640 Series Operation Manual

8. Ensure the counterbore faces the O-Ring and the resistor.
9. Replace the water chamber [3], gently rocking and twisting the chamber to achieve a flat seat on the outer
housing.
Note: If the water chamber does not fit properly make sure that the inner flow tube is properly
placed.
10. Tighten the water chamber screws [6].
11. Check the DC resistance between the inner and outer conductors; it should be about 50 ohms.
Note: Record this measurement as the new baseline reading.
12. Install the load on the heat exchanger.
13. Connect the hoses and fill with coolant.
14. Run the pump for five minutes and check for leaks before applying RF power.

Replacing the Conductor

3

1. Use a Allen wrench to remove the cap screws [16] from the RF connector.
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2. Remove the outer conductor assembly [12].
Note: If only the outer conductor needs replaced, install it now and screw it into place.
3. Remove the center conductor assembly [11] by pulling it carefully out of the load housing.
4. Ensure the resistor [1] and inner flow tube [9] do not come out with the center conductor.
5. Insert the new center conductor assembly into load housing.
6. Ensure the resistor fitting makes a snug fit with the resistor.
7. Replace the outer conductor and screw it into place.

Preparation for Storage or Shipment

Store the Bird 8640 in a cool, dry area. For pure water-cooled units, the ambient temperature must be within 5°C to
50°C (41°F to 122°F). For units with 35% ethylene glycol, the ambient temperature must be within –25°C to 45°C (–
13°F to 113°F). Drain the coolant (see
days.
To ship, pack the unit in its original shipping container. If this is not available, securely pack and seal it in a sturdy
wooden box or equivalent, with sufficient padding to avoid shock damage.

Customer Service

Any maintenance or service procedure beyond the scope of those in this chapter should be referred to a qualified
service center.
If the unit needs to be returned for any reason, request an Return Material Authorization (RMA) through the Bird
Technologies website. All instruments returned must be shipped prepaid and to the attention of the RMA number.
Bird Service Center
30303 Aurora Road
Cleveland (Solon), Ohio 44139-2794
Fax: (440) 248-5426
E-mail: bsc@birdrf.com
For the location of the Sales Office nearest you, visit our Web site at:
http://www.birdrf.com
"Changing Coolant" on page 12
) if the unit will be stored for more than 30
Maintenance
21