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NOTE: If you are using a non-DX Engineering rotator shelf, ensure the rotator bolt pattern is correct (see 

Reference Information later in this manual) and there is an opening on the bottom to allow moisture 

drainage from the weep holes on the bottom of the DXE-RT4500HD

 

 
Rotator Installation on Rotator Shelf 

 

Once the rotator is in position to be installed, remove the two temporary hex head bolts and temporary lifting 
strap. 

 

Slip the DXE-4500HD rotator through the Rohn RG45 tower legs. 
Align the rotator bottom 4 mounting holes with the rotator shelf 

holes. 

 

Install the four washers and four hex head patch bolts.  

 

Tighten the four mounting patch bolts securely in place. 
These bolts do not require Jet-Lube

®

 SS-30™ since the bolts are 

being threaded into the bottom rotator case that is cast aluminum. 
The yellow patch you see on the threads of the four bolts is a 

ready-to-use thread locking compound (no Loctite

®

 is needed). 

Torque specs for the patch bolts are actually 12 foot lbs, BUT 

because of the patch compound this will vary considerably. It is 

up to the installer to insure they are actually tight. 
 

 

NOTE: The patch bolts are single-use.  

If for any reason you remove the patch bolts, you must replace the patch bolts with new patch bolts. 

 

 
 

 
The Mast Clamp should already have the clamping bolts loosely installed per the 

instruction manual for the mast clamp.  
 

 
 

 

 

NOTE: Ensure the Mast Clamp is open just wide enough to allow the aluminum tube to slide in place.  

There is one bolt on the mast clamp that is used to open the clamp (when the other four bolt sets are loose). 

 

 

Using the four hex head bolts, eight stainless steel washers and four Nyloc nuts install the Mast Clamp to the 

rotator top plate using the previously identified four holes that match up. Use Jet-Lube

® 

SS-30™ on the hex 

head bolts. Double check the tension after all four bolts are tightened. 

 

 

NOTE: The Nyloc nuts in this application are considered single-use.  

If for any reason you remove or loosen the Nyloc nuts, you must replace them with new Nyloc Nuts. 

 

Summary of Contents for DXE-RT-4500HD

Page 1: ...XE RT4500HD DXE RT4500HD INS Revision 0 DX Engineering 2022 1200 Southeast Ave Tallmadge OH 44278 USA Phone 800 777 0703 Tech Support and International 330 572 3200 Fax 330 572 3279 E mail DXEngineeri...

Page 2: ...p Mount Mast Clamps available for 2 inch OD or 3 inch OD masts Precision Movement accuracy within 0 1 degrees with high resolution magnetic pulse sensor controller Easy Maintenance access panel allows...

Page 3: ...bearing shelf or flat tower top The rotator mounting shelf must be installed so it is level and centered to the tower which will then be in line with the rotator to eliminate any undue stress The Rot...

Page 4: ...holds the top plate in position and it is not designed to hold the weight of the rotator If you hold the rotator by the top plate you risk having the snap ring fail and the rotator will then drop away...

Page 5: ...Stainless Steel 4 DXE LP20 F 4 pin control female cable connector with 6mm and 8 12mm water tight grommet 1 Rotator Lift Strap Aluminum 3 5 1 4 x 1 x 1 4 1 Rotator Lift Strap Bolt 3 5 16 18 x 3 4 Sock...

Page 6: ...XE AS455G Tower Accessory Shelf for Rohn 45 and 55 tower Mast Clamp Select One DXE RTMC 2 DX Engineering Rotator Top HD Mast Clamp for 2 in OD mast DXE RTMC 3 DX Engineering Rotator Top HD Mast Clamp...

Page 7: ...Pre made Rotator Control Extension Cable assembly with connectors installed 10 feet long DXE RTC 025PE Pre made Rotator Control Extension Cable assembly with connectors installed 25 feet long DXE RTC...

Page 8: ...n above The cable needed for controlling the DX Engineering Rotator uses four wires Two 12AWG wires for DC supply to the motor and two 18AWG wires for the Pulse Sensor For cable runs over 300 feet use...

Page 9: ...moisture drainage from the weep holes on the bottom of the DXE RT4500HD The following installation example uses a Rohn 45G tower DXE AS455G Rotator Shelf DXE RTMC 2 Two Inch Mast Clamp DXE TB300 Thrus...

Page 10: ...ed Rotator Connections to the Rotator Control Box The RT4500HD uses four wires Two 12AWG wires for DC supply White Pin 1 and Black Pin 2 to the motor and two 18AWG wires for the Pulse Sensor Red Pin 3...

Page 11: ...he rotator in the tower Using a Gin Pole raise the mast to the point that it can pass though the Thrust Bearing Keep in mind there is not a lot of play between the Thrust Bearing and Mast so alignment...

Page 12: ...ctite is needed Torque specs for the patch bolts are actually 12 foot lbs BUT because of the patch compound this will vary considerably It is up to the installer to insure they are actually tight NOTE...

Page 13: ...Hex Head Bolts securely in place to hold the Mast in place The four bolts squeeze the clamp securely around the steel mast Torque for the clamp bolts is 11 foot lbs tightening from the inside to the o...

Page 14: ...p Incl Clamps for 2 in OD Mast Fasteners 3 4 in D x 4 ft L Rod DXE LRMM 2 458BS Lightning Rod Kit for Mast Top Incl Clamps for 2 in OD Mast Fasteners 5 8 in D x 4 ft L Rod DXE LRMM 2 458B Lightning Ro...

Page 15: ...c pulse sensor You can order and keep on hand a spare magnetic pulse counter from DX Engineering DXE RT PULSE ASM Magnetic Pulse Sensor Assembly Kit Includes Magnetic Sensor Component Door Cover and G...

Page 16: ...lse sensor assembly 1 2 3 4 5 Position the new replacement Pulse Assembly as shown 6 Plug in the new replacement pulse sensor assembly 7 When tucking the connector and wires into the rotator push them...

Page 17: ...eet use appropriate size wire for 24 VDC at 3 1 A operation power requirements at the rotator Weight 22 lbs without hardware or mast clamp 27 lbs with hardware and 2 in Mast clamp Width 7 970 in apex...

Page 18: ...17 Appendix Reference Information Overall dimensions of Rotator Top Plate Dimensions Bottom Rotator Mounting Bolt Pattern...

Page 19: ...th the DXE RG4500HD Calibration Procedure 1 Install antenna if not already installed Since there are no hard limit switches in the DXE RT4500HD you can point the antenna at any known direction to comp...

Page 20: ...allation damaged from severe weather including floods or abnormal environmental conditions such as prolonged exposure to corrosives or power surges or by the performance of repairs or alterations outs...

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