Table of Contents
Summary of Contents for BIRD BA-300 Series
- Page 1 Blower Assembly Models BA-300 & BA-310 Operation Manual © Copyright 2016 by Bird Technologies, Inc. Instruction Book Part Number 920-BA-300/310 Rev. G ® ® Termaline and Tenuline are Registered Trademarks of Bird Electronic Corporation...
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Page 2: Safety Precautions
Safety Precautions The following are general safety precautions that are not necessarily related to any specific part or procedure, and do not necessarily appear elsewhere in this publication. These precautions must be thoroughly understood and apply to all phases of operation and maintenance. WARNING Keep Away From Live Circuits Operating Personnel must at all times observe general safety precautions. Do not replace components or make adjustments to the inside of the test equipment with the high voltage supply turned on. To avoid casualties, always remove power. WARNING Shock Hazard Do not attempt to remove the RF transmission line while RF power is present. WARNING Do Not Service Or Adjust Alone Under no circumstances should any person reach into an enclosure for the purpose of service or adjustment of equipment except in the presence of someone who is capable of rendering aid. WARNING Safety Earth Ground An uninterruptible earth safety ground must be supplied from the main power source to test instruments. Grounding one conductor of a two conductor power cable is not sufficient protection. Serious injury or death can occur if this grounding is not properly supplied. WARNING Resuscitation Personnel working with or near high voltages should be familiar with modern methods of resuscitation. WARNING Remove Power Observe general safety precautions. Do not open the instrument with the power applied. - Page 3 Safety Precautions Safety Symbols WARNING Warning notes call attention to a procedure which, if not correctly performed, could result in personal injury. CAUTION Caution notes call attention to a procedure which, if not correctly performed, could result in damage to the instrument. The caution symbol appears on the equipment indicating there is important information in the instruction manual regarding that particular area. This symbol indicates that a shock hazard exists if the precautions in the instruction manual are not followed. Note: Calls attention to supplemental information.
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Page 4: Warning Statements
Blower Assembly Warning Statements The following safety warnings appear in the text where there is danger to operating and maintenance personnel and are repeated here for emphasis. WARNING The vent plug must be used at all times when the load is operating or cooling. Failure to do so could result in an explosion or severe burns. See page 3 WARNING Disconnect the unit from all power sources before servicing. The unit may be energized from multiple sources. The potential for electric shock exists. See pages 3, 5, 8, 9, and 10 WARNING Never attempt to connect or disconnect RF equipment from the transmission line while RF power is being applied. Leaking RF energy is a potential health hazard. See pages 6 and 8 WARNING Do not operate with side panel removed. See pages 5 and 9 WARNING Turn off ac power and RF power when attaching the power cable. See page 5... -
Page 5: Caution Statements
Safety Precautions Caution Statements The following equipment cautions appear in the text whenever the equipment is in danger of damage and are repeated here for emphasis. CAUTION The BA system is designed for operation in a horizontal position only, with the load’s vent plug up. Do not use in any other manner. See page 3 CAUTION If installed, connect optional interlock before applying RF power. See page 4 CAUTION Check the local electrical code for proper ac hookup prior to operation of the unit. Make sure the neutral or return hookup is only used for that purpose. See page 5 CAUTION The Bird BA–300/310 Blower Assembly will derate a load’s specified power by 50% when installed and not running. If the indicator light should turn off, immediately reduce RF power by at least 75%. See page 6... -
Page 6: Safety Statements
Blower Assembly Safety Statements USAGE ANY USE OF THIS INSTRUMENT IN A MANNER NOT SPECIFIED BY THE MANUFACTURER MAY IMPAIR THE INSTRUMENT’S SAFETY PROTECTION. EL USO DE ESTE INSTRUMENTO DE MANERA NO ESPECIFICADA POR EL FABRICANTE, PUEDE ANULAR LA PROTECCIÓN DE SEGURIDAD DEL INSTRUMENTO. BENUTZUNG WIRD DAS GERÄT AUF ANDERE WEISE VERWENDET ALS VOM HERSTELLER BESCHRIEBEN, KANN DIE GERÄTESICHERHEIT BEEINTRÄCHTIGT WERDEN. - Page 7 Safety Precautions SERVICE SERVICING INSTRUCTIONS ARE FOR USE BY SERVICE - TRAINED PERSONNEL ONLY. TO AVOID DANGEROUS ELECTRIC SHOCK, DO NOT PERFORM ANY SERVICING UNLESS QUALIFIED TO DO SERVICIO LAS INSTRUCCIONES DE SERVICIO SON PARA USO EXCLUSIVO DEL PERSONAL DE SERVICIO CAPACITADO.
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Page 8: About This Manual
Blower Assembly About This Manual This instruction book covers the following models: BA – 3 00 – 1 15 BA – 3 10 – 1 15 BA – 3 00 – 2 30 BA – 3 10 – 2 30 Changes to this Manual We have made every effort to ensure this manual is accurate. If you discover any errors, or if you have suggestions ... -
Page 9: Table Of Contents
Table of Contents Safety Precautions ..............i Safety Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -
Page 10: Chapter 1 Introduction
Chapter 1 Introduction Bird Blower Assemblies supply forced air cooling to Bird Loads, including Termaline 8890 Series terminations and Tenuline 8329 Series attenuators. The Bird BA – 3 00 consists of two high efficiency fans, with vertical side baffles to direct air over the load’s radiator fins. The blower doubles the normal RF input rating of the installed load, e.g. a 2.5 kW load can dissipate 5 kW. The Bird BA – 3 10 is identical to the BA – 3 00 except that it has a thermoswitch wired in parallel with the power switch. When a load equipped with a fan‐control thermoswitch is properly connected, the blower will automatically turn on in response to a rise in load temperature. This system provides automatic operation suitable for reject load service. Items Furnished Blower Assembly Detachable 3‐wire power cable (without male plug for 230 VAC power cable) Nuts and screws Load resistor mounted in place (when ordered with a load) Instruction manual (when ordered without a load) Items Required but Not Supplied ... -
Page 11: Chapter 2 Theory Of Operation
Chapter 2 Theory of Operation Loads convert RF energy into heat. This heat must be quickly transferred to the surrounding environment to prevent damage to the load. The coolant fluid surrounding the resistor transports the heat to the radiator walls by convection. There, air passing over the radiator fins carries the heat away. When a load or attenuator is mounted on the Bird Blower Assembly, baffles cover the radiator fins so that the high airflow generated by two blower fans is confined to passing over the fins. Up to twice as much RF energy can be dissipated by this forced draft air flow as compared to normal convection air currents. Thus, a 2.5 kW load will safely dissipate 5 kW using the Bird BA–300/310. Power Rating Reduction The baffles interfere with the free flow of normal air currents, causing a 50% reduction in heat transfer efficiency if the forced airflow is stopped. Thus, a 2.5 kW load will have its maximum power dissipation reduced to 1.25 kW. -
Page 12: Chapter 3 Installation
Chapter 3 Installation This chapter provides information for on‐site requirements, unpacking, inspection, and preparing the unit for use. Unpacking and Inspection 1. Carefully inspect shipping container for signs of damage. If the shipping container is damaged, do not unpack the unit. Immediately notify the shipping carrier and Bird Technologies. If the shipping container is not damaged, unpack the unit. Save shipping materials for repackaging. 2. Inspect unit for visual signs of damage. Note: If there is damage, immediately notify the shipping carrier and Bird Technologies. Mounting Place the Blower Assembly in a dry, dust and vibration free environ‐ment. Do not use outdoors or in areas of condensing humidity. Allow at least 3" (7.6 cm) of clearance above and on all sides of the unit. CAUTION The BA system is designed for operation in a horizontal position only, with the load’s vent plug up. Do not use in any other manner. Bird Blower Assemblies are equipped for either portable use or fixed installation. The mounting brackets on the front and rear faces have four mounting slots arranged in a 4 " x 20 " rectangle (114.3 x 526.3 mm). Use a screw with a " (9.53 mm) diameter max. Installing Thermoswitch (BA–310 Only) The Bird BA–310 requires a control thermoswitch, P/N 2450‐085, for automatic operation. It is normally open, closing at 155 °C (311 °F), with a rating of 10A @ 120Vac and 5A @ 230Vac. WARNING Disconnect the unit from all power sources before servicing. -
Page 13: Thermoswitch Connection (Ba-310 Only)
Installation Thermoswitch Connection (BA–310 Only) Connect the thermoswitch to the Bird BA–310 as follows : CAUTION If installed, connect optional interlock before applying RF power. Note: If your unit has a connector already attached to the thermoswitch cable, you do not need to perform Step 1 through Step 4. 1. Unscrew the large knurled ring‐nut (A) at the lower end of the coupling jack assembly (See below). Pull Figure 2 it off the thermoswitch jack (B). Unscrew the small knurled cover fitting from the base plug (D) of the connector to release the base. 2. Thread the control switch wires through the clamp (E) with the washers (F) inside and with its threaded fitting in place. Service the control switch wire with short tips and put spaghetti sleeves over the wire ends if necessary. 3. Securely solder the control switch leads to the lugs (G) of the connector base. Note: The ring‐nut (A) must be in place over the base plug (D) with the knurled end facing out. 4. Screw on the cover ring, then fasten the cable clamp (E) in place and tighten both yoke screws (H). 5. Put the plug back on the thermoswitch and tighten the nut (A). Figure 2 Thermoswitch Assembly... -
Page 14: Load Resistor
Blower Assembly Load Resistor To connect the Blower Assembly to a load, follow these instructions: WARNING Disconnect the unit from all power sources before servicing. The unit may be energized from multiple sources. The potential for electric shock exists. WARNING Do not operate with side panel removed. Remove one of the vertical panels by unscrewing both 10‐32 truss head screws. Place the load on the blower assembly against the remaining vertical panel. Be sure that the RF input connector faces the same direction as the blower control panel. Line up the base holes and loosely screw the load and blower together with the nuts and screws provided. Remount the side panel and loosely replace the truss head screws. Line up the holes on the side panel tabs with those on the front and rear faces of the load. Secure with four 10‐32 truss head screws. Note: It may be necessary to temporarily loosen the two screws in the unremoved vertical panel. Tighten all the side panel and base mounting screws securely. Push the power cable’s plug into the socket at the rear of the blower, then lock it in place with the clamp. AC Power Hookup CAUTION Check the local electrical code for proper ac hookup prior to operation of the unit. Make sure the neutral or return hookup is only used for that purpose. WARNING Turn off ac power and RF power when attaching the power cable. The ac power supply required is 115/230 VAC, depending on the model, @ 50/60 Hz, 1. The blower is equipped with an IEC 320 “cold” (65 °C) ac inlet. -
Page 15: Chapter 4 Operating Instructions
The Bird BA–300/310 Blower Assembly will derate a load’s specified power by 50% when installed and not running. If the indicator light should turn off, immediately reduce RF power by at least 75%. WARNING Never attempt to connect or disconnect RF equipment from the transmission line while RF power is being applied. Leaking RF energy is a potential health hazard. All Bird Blower Assemblies are equipped with a control switch and a indicator light. No initial adjustments are required. BA – 300 Controls On the Bird BA – 3 00, the switch is labeled “ON/OFF”. When the switch is set to ON, the indicator light will turn on and the fans will run continuously. When set to OFF, the indicator light will turn off and the fans will not run. BA – 310 Controls On the Bird BA – 3 10, the switch is labeled “MANUAL/AUTOMATIC”. When the switch is set to MANUAL, the fans will run continuously. When set to AUTOMATIC, the fans will be turned on when the coolant reaches a preset temperature. The indicator light will turn on whenever the unit is connected to ac power. Normal Operation Turn the blower on. Check that the indicator light is on. Set the Bird BA – 3 10 to MANUAL momentarily to check that the fans are working properly. -
Page 16: Emergency Shutdown
Blower Assembly Emergency Shutdown Turn off RF power at the source. If the load is equipped with an interlock thermoswitch, RF power will be automatically turned off when the coolant temperature reaches an unsafe level. Use of an interlock thermoswitch is especially recommended when using the blower assembly. -
Page 17: Chapter 5 Maintenance
Chapter 5 Maintenance This chapter covers cleaning, inspection, troubleshooting, and specifications for the Bird BA–300/310 Blower Assemblies. WARNING Never attempt to connect or disconnect RF equipment from the transmission line while RF power is being applied. Leaking RF energy is a potential health hazard. WARNING Disconnect the unit from all power sources before servicing. The unit may be energized from multiple sources. The potential for electric shock exists. Troubleshooting For corrections requiring repair or replacement of components see the appropriate section. Only those functions within the scope of normal maintenance are listed. This manual cannot list all malfunctions that may occur, or corrective actions. If a problem is not listed or is not corrected by the listed actions, notify a qualified service center. Problem Possible Cause Possible Correction Unplugged power cable Connect the power cable Replace fuse after checking and correcting the No air flow from blowers; Fuse burnout burnout cause. (See "Fuse" on page 9 indicator light off Make sure ac power is properly connected and No ac power turned on Fan obstructed by bent grill Straighten the grill No air flow from blowers; Clean the grill and fan blades (See "Cleaning" on Fan motors overheated indicator light on page 8... -
Page 18: Inspection
Blower Assembly WARNING Disconnect the unit from all power sources before servicing. The unit may be energized from multiple sources. The potential for electric shock exists. WARNING Do not operate with side panel removed. Remove one of the side baffles by unscrewing both 10‐32 truss head screws. Clean the load. Screw the baffle back into place. Inspection The only regular inspection required is to check for the accumulation of dust in locations that might impede the free flow of air, i.e., intake grill and fan blades. If the blower assembly is attached to a load, clean the radiator fins regularly. Repair WARNING Disconnect the unit from all power sources before servicing. The unit may be energized from multiple sources. The potential for electric shock exists. Fuse The fuse is located in the AC module on the back of the blower. To replace the fuse: Correct the fuse burnout cause. Note: Common causes include stuck or blocked fans or a short circuit in the motor or blower wiring. Press the locking tab on the fuse drawer and remove the drawer. Replace the fuse. See for fuse type and current rating. "Specifications" on page 12 Push the drawer into the AC module until it locks into place. If the fans still do not run or if the fuse burns out again, return the blower assembly to the factory. -
Page 19: Indicator Light
Maintenance Indicator Light 1. Remove the four 8‐32 pan head screws from the front and back of the base frame. 2. Pull the fan guard straight off the bottom. 3. Remove the quick disconnects on the light and unscrew the retaining sleeve. 4. Remove the light unit. 5. Remove the lens while pressing both locking tabs. 6. Press the housing’s center slot with a small screwdriver to release the lamp. 7. Push the new lamp into the housing until it snaps into place. 8. Replace the lens, then put the light unit back in place. 9. Replace the fan guard and screw in the 8‐32 pan head screws. To replace a fan assembly: WARNING Disconnect the unit from all power sources before servicing. The unit may be energized from multiple sources. The potential for electric shock exists. 1. Remove the four 8‐32 pan head screws from the front and back of the base frame. 2. Pull the fan guard straight off the bottom. 3. Carefully unsolder the color coded connecting wires. Note the connections for resoldering. 4. Remove the four fan mounting screws and remove the defective fan. Be careful not to lose the lipped retaining washers. 5. Insert the replacement fan with the fan blade assembly facing down, towards the fan guard grill. 6. Insert the mounting screws and retaining washers into the mounting holes. Turn the washers so that the lipped portion fits over the rim of the fan frame. Tighten the screws. Note: If the fan replaced is the one closest to the power socket, reattach the green ground wire to the ... -
Page 20: Storage And Shipment
GRN/YEL TOGGLE SWITCH WHT/BLK ROTATION RECEPTACLE FANS WHT/BLK WHT/YEL INDICATOR WHT/BLK LIGHT Storage and Shipment Cover the Bird BA – 3 00/310 before storing to keep out dust and dirt. Store in a dry, dust‐free environment where the ambient temperature will remain between – 4 0 and +45 °C (– 4 0 to +113 °F). To ship the blower assembly, take the following precautions: Detach the power cable and tape it securely to the housing. To ship the blower assembly by itself, pack it in a sturdy corrugated paper shipping carton. If it is attached to a load, a wood crate is recommended because of size and weight. 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... -
Page 21: Specifications
Maintenance Specifications AC Power Requirements: 115 VAC 0.6 A @ 50/60 Hz 230 VAC 0.3 A @ 50/60 Hz Fuse Rating IEC (5 x 20 mm) Type T 115 VAC 1 A 230 VAC 500 mA Thermoswitch Normally open. Closes at 155 °C (311 °F) Thermoswitch Rating 115 VAC 10 A 230 VAC 5 A Temperature – 4 0 to +113 °F (– 4 0 to +45 °C) Humidity 95% non‐condensing max " L x 7 " W x 17 " H Dimensions (548 x 187 x 436 mm) Weight, Nominal 13.5 lb (6.1 kg) Finish Grey Powder Coat 1 22" H (560 mm) with load in place Replacement Parts... -
Page 22: Limited Warranty
Limited Warranty All products manufactured by Seller are warranted to be free from defects in material and workmanship for a period of one (1) year, unless otherwise specified, from date of shipment and to conform to applicable specifications, draw‐ ings, blueprints and/or samples. Seller’s sole obligation under these warranties shall be to issue credit, repair or replace any item or part thereof which is proved to be other than as warranted; no allowance shall be made for any labor charges of Buyer for replacement of parts, adjustment or repairs, or any other work, unless such charges are authorized in advance by Seller. If Seller’s products are claimed to be defective in material or workmanship or not to conform to specifications, draw‐ ings, blueprints and/or samples, Seller shall, upon prompt notice thereof, either examine the products where they are located or issue shipping instructions for return to Seller (transportation charges prepaid by Buyer). In the event any of our products are proved to be other than as warranted, transportation costs (cheapest way) to and from Seller’s plant, will be borne by Seller and reimbursement or credit will be made for amounts so expended by Buyer. Every such claim for breach of these warranties shall be deemed to be waived by Buyer unless made in writing within ten days from the date of discovery of the defect. The above warranties shall not extend to any products or parts thereof which have been subjected to any misuse or neglect, damaged by accident, rendered defective by reason of improper installation or by the performance of repairs or alterations outside of our plant, and shall not apply to any goods or parts thereof furnished by Buyer or acquired from others at Buyer’s request and/or to Buyer’s specifications. Routine (regularly required) calibration is not covered under this limited warranty. In addition, Seller’s warranties do not extend to the failure of tubes, transis‐ tors, fuses and batteries, or to other equipment and parts manufactured by others except to the extent of the origi‐ nal manufacturer’s warranty to Seller. The obligations under the foregoing warranties are limited to the precise terms thereof. These warranties provide exclusive remedies, expressly in lieu of all other remedies including claims for special or consequential damages. SELLER NEITHER MAKES NOR ASSUMES ANY OTHER WARRANTY WHATSOEVER, WHETHER EXPRESS, STATUTORY, OR IMPLIED, INCLUDING WARRANTIES OF MERCHANTABILITY AND FITNESS, AND NO PERSON IS AUTHORIZED TO ASSUME FOR SELLER ANY OBLIGATION OR LIABILITY NOT STRICTLY IN ACCORDANCE WITH THE FOREGOING.
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