Canrig 1250AC-681 Manual Download Page 5

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Model: See affected models

Serial #: N/A

Sep. 29, 2021

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6. Align sensor to sensor target. Adjust the sensor target to a minimum gap of 0.03" and a

maximum gap of 0.048". Do not adjust the sensor. See Figure 5.

Figure 5: Sensor Alignment

7. Attach and tighten sensor cable to the back of the sensor as shown in Figure 6.

8. Install the unlocking safety clip (P/N: E19187-CLIP) around the sensor and sensor cable.

Figure 6: Sensor Cable Installation

9. Route the new sensor cable through the top drive following the same route as the old sensor

cable to the PLC J-box.

10. Disconnect the old sensor cable from the J-box and remove it from the top drive.

.03 [1] MIN GAP

.048 [1.2] MAX GAP

Sensor

Sensor target

Sensor cable

Sensor

Summary of Contents for 1250AC-681

Page 1: ...r lock sensor has been replaced with a new handler lock sensor with a simplified design and improved securement Affected Models Top drive models 1250AC 681 1275AC 681 1250AC 865 1275AC 865 Replacement...

Page 2: ...mail support rigline247 com Document ID 19 048 v Rev 2 Copyright 2021 Nabors Drilling Technologies USA Inc All rights reserved 2 of 6 Original Handler Lock Assembly Figure 1 Original Handler Lock Sen...

Page 3: ...ndler lock is engaged and in the lock position before beginning 2 Perform lock out tag out procedures according to local regulations to isolate all forms of energy to the top drive 3 Use appropriate p...

Page 4: ...k sensor bracket with two 1 2 13UNC x 1 hex head bolts and two 1 2 Nord Lock washers See Figure 3 3 Torque bolts to 99 ft lbs per Canrig Engineering Specification ENG 725 Figure 3 Mounting Bracket Ins...

Page 5: ...0 048 Do not adjust the sensor See Figure 5 Figure 5 Sensor Alignment 7 Attach and tighten sensor cable to the back of the sensor as shown in Figure 6 8 Install the unlocking safety clip P N E19187 CL...

Page 6: ...ng Technologies USA Inc All rights reserved 6 of 6 11 To connect the new sensor and cable refer to Subsection 6E of the Top Drive Parts Manual This section contains the schematics that show the correc...