RPM LD-260 Load Disconnect Fuse Replacement | FRONTLINE Maintenance Tool

Last Updated: 06/18/2025 1:42 AM

The following table lists all the components that make up the document.

Title	Type	Status	Last Updated
Rapiscan PM-700 Pedestrian Monitor	Device	Published	06/05/2025 11:30 AM
Rapiscan VM-250 Vehicle Monitor	Device	Published	06/05/2025 11:26 AM
Rapiscan TM-850 Rail Monitor	Device	Published	06/05/2025 11:31 AM
Rapiscan CM-267 Conveyor Monitor	Device	Published	06/27/2024 1:02 PM
7264 - 1401 - Establish Initial Conditions; Remark:	Procedure Step	Published	04/27/2023 7:00 PM
1401 - Establish Initial Conditions	Instruction	Published	09/30/2022 3:14 PM
7622 - 7592 - Inform system operators; Remark:11335	Procedure Step	Published	04/20/2025 10:15 AM
7592 - Inform system operators	Instruction	Published	06/29/2023 3:20 PM
11335 - Upon arrival, brief system operators on expected work, duration, anticipated ...	Remark	Published	04/20/2025 10:14 AM
7268 - 7231 - Close lane; Remark:7233	Procedure Step	Published	04/27/2023 7:01 PM
9053 - Warning : Traffic should temporarily be rerouted or halted during conduction of this pr...	Annotation	Published	09/27/2023 9:09 AM
7231 - Close lane	Instruction	Published	04/18/2023 1:00 PM
7233 - Use orange safety (traffic control) cones to setup barriers. Practice establi...	Remark	Published	04/24/2023 12:18 PM
7269 - 7232 - Open RPM door; Remark:7234	Procedure Step	Published	04/27/2023 7:02 PM
7232 - Open RPM door	Instruction	Published	04/18/2023 1:02 PM
7234 - Open all doors needed to access components.	Remark	Published	04/19/2025 7:48 PM
7755 - 7679 - Disconnect Ethernet; Remark:11336	Procedure Step	Published	04/20/2025 11:18 AM
7680 - Caution : Make sure to press release button on back of Ethernet cable before removing.	Annotation	Published	07/01/2023 11:54 PM
7679 - Disconnect Ethernet	Instruction	Published	05/16/2025 8:03 PM
11336 - Locate Ethernet connector on top of SC-770 controller. Press release button o...	Remark	Published	04/20/2025 11:21 AM
7270 - 7235 - Power off RPM; Remark:7236	Procedure Step	Published	09/01/2023 7:57 PM
7235 - Power off RPM	Instruction	Published	04/24/2023 12:30 PM
7236 - Move LD-260 switch to OFF position. The PWR ON	Remark	Published	04/27/2023 4:25 PM
7454 - 7290 - Disable tamper switches; Remark:7416	Procedure Step	Published	06/02/2023 5:25 PM
7290 - Disable tamper switches	Instruction	Published	05/01/2023 8:14 AM
7416 - Use a magnet to disable tamper switches for all open doors. Use adhesive tape...	Remark	Published	06/02/2023 1:18 PM
8561 - 7291 - Disable both infrared occupancy sensors; Remark:8514	Procedure Step	Published	09/18/2023 12:05 AM
5291 - Note : It is good practice to verify all cables and connectors are labeled prior to ...	Annotation	Published	10/24/2022 8:35 AM
7291 - Disable both infrared occupancy sensors	Instruction	Published	05/01/2023 8:15 AM
8514 - Verify sensors mounted in control pillar door are receivers.	Remark	Published	09/29/2023 11:52 AM
9205 - To disconnect sensor cable, turn collar counterclockwise and pull away from s...	Remark	Published	09/29/2023 11:52 AM
8070 - 8066 - Disconnect upper left connector; Remark:8065	Procedure Step	Published	07/31/2023 1:54 PM
8066 - Disconnect upper left connector	Instruction	Published	07/31/2023 1:49 PM
8065 - The power input connector is a three-pin Molex. Both LEDs should be off when ...	Remark	Published	07/31/2023 1:54 PM
8077 - 8076 - Uninstall Faulty Fuse; Remark:	Procedure Step	Published	07/31/2023 4:31 PM
8076 - Uninstall Faulty Fuse	Instruction	Published	07/31/2023 4:31 PM
8075 - 8074 - Remove switch retaining nut; Remark:8073	Procedure Step	Published	07/31/2023 4:38 PM
8074 - Remove switch retaining nut	Instruction	Published	07/31/2023 4:32 PM
8073 - A small box end or crescent wrench may be required to loosen the switch retai...	Remark	Published	07/31/2023 4:38 PM
8084 - 8083 - Remove four cover plate screws; Remark:8082	Procedure Step	Published	07/31/2023 7:46 PM
8083 - Remove four cover plate screws	Instruction	Published	07/31/2023 7:44 PM
8082 -	Remark	Published	07/31/2023 7:46 PM
8085 - 8081 - Remove cover plate; Remark:8080	Procedure Step	Published	07/31/2023 7:52 PM
8081 - Remove cover plate	Instruction	Published	07/31/2023 7:51 PM
8080 -	Remark	Published	07/31/2023 7:52 PM
8086 - 8079 - Remove failed fuse; Remark:8078	Procedure Step	Published	07/31/2023 7:54 PM
8079 - Remove failed fuse	Instruction	Published	07/31/2023 7:53 PM
8078 - Carefully pull or pry the failed fuse from holder.	Remark	Published	07/31/2023 7:54 PM
3397 - 3395 - Label faulty component; Remark:3396	Procedure Step	Published	07/21/2024 6:59 AM
3395 - Label faulty component	Instruction	Published	08/07/2021 11:07 AM
3396 - Use tag or tape. Include date of removal, description of failure symptoms, co...	Remark	Published	08/09/2021 11:35 AM
8097 - 8096 - Install New Fuse; Remark:	Procedure Step	Published	07/31/2023 7:56 PM
8096 - Install New Fuse	Instruction	Published	07/31/2023 7:55 PM
10323 - 10322 - Place the new fuse in the fuse holder.; Remark:	Procedure Step	Published	11/17/2023 7:19 PM
10322 - Place the new fuse in the fuse holder.	Instruction	Published	11/17/2023 7:18 PM
8098 - 8094 - Install cover plate; Remark:	Procedure Step	Published	07/31/2023 7:56 PM
8094 - Install cover plate	Instruction	Published	07/31/2023 7:56 PM
8099 - 8093 - Install four screws; Remark:	Procedure Step	Published	07/31/2023 7:57 PM
8093 - Install four screws	Instruction	Published	07/31/2023 7:57 PM
8100 - 8092 - Install switch retaining nut; Remark:	Procedure Step	Published	07/31/2023 7:58 PM
8092 - Install switch retaining nut	Instruction	Published	07/31/2023 7:57 PM
7279 - 7249 - Return equipment to normal operating condition; Remark:	Procedure Step	Published	04/27/2023 4:13 PM
7249 - Return equipment to normal operating condition	Instruction	Published	04/08/2025 3:22 PM
8089 - 8088 - Reconnect upper left connector; Remark:8087	Procedure Step	Published	07/31/2023 8:06 PM
8088 - Reconnect upper left connector	Instruction	Published	07/31/2023 8:01 PM
8087 - When the connector is reconnected, the AC LED should be lit....	Remark	Published	07/31/2023 8:05 PM
7280 - 7250 - Power on RPM; Remark:7251	Procedure Step	Published	04/27/2023 4:14 PM
7250 - Power on RPM	Instruction	Published	05/01/2023 8:31 AM
7251 - Move LD-260 switch to ON position. The LED PWR ON	Remark	Published	05/10/2023 3:14 PM
7281 - 7252 - Verify RPM start-up; Remark:7253	Procedure Step	Published	04/20/2025 3:26 PM
7252 - Verify RPM start-up	Instruction	Published	04/27/2023 2:23 PM
7253 - RPM will perform a power on self-test (POST) and collect a background radiati...	Remark	Published	05/10/2023 3:14 PM
8587 - 7305 - Enable both infrared occupancy sensors; Remark:8559	Procedure Step	Published	09/17/2023 11:03 PM
5553 - Caution : Correct placement of connectors and wiring is critical to proper operation.	Annotation	Published	10/28/2022 2:19 PM
7305 - Enable both infrared occupancy sensors	Instruction	Published	05/01/2023 8:33 AM
8559 - To reconnect sensor cable, align connectors, push towards sensor, and turn co...	Remark	Published	09/29/2023 12:05 PM
7474 - 7310 - Enable tamper switches; Remark:7451	Procedure Step	Published	06/02/2023 5:41 PM
7310 - Enable tamper switches	Instruction	Published	05/01/2023 8:36 AM
7451 - Remove magnets and/or adhesive tape from door tamper switches.	Remark	Published	04/13/2025 5:46 PM
7781 - 7730 - Reconnect Ethernet; Remark:7731	Procedure Step	Published	04/20/2025 11:00 AM
7730 - Reconnect Ethernet	Instruction	Published	07/02/2023 2:34 AM
7731 - Insert Ethernet connector at top of SC-770 module. Connector will audibly "cl...	Remark	Published	07/02/2023 2:36 AM
7282 - 7254 - Confirm network connection; Remark:7255	Procedure Step	Published	04/27/2023 4:15 PM
7254 - Confirm network connection	Instruction	Published	04/27/2023 2:22 PM
7255 - Contact operators to confirm communications have been reestablished between RPM ...	Remark	Published	05/10/2023 3:15 PM
9385 - 319 - Perform operational test; Remark:9347	Procedure Step	Published	06/16/2025 5:15 PM
319 - Perform operational test	Instruction	Published	06/10/2021 8:31 PM
9347 - DET-RPM-RAP-RM03 RPM Operational Test.	Remark	Published	10/03/2023 12:11 PM
7283 - 7256 - Close and lock all RPM doors; Remark:	Procedure Step	Published	09/01/2023 11:45 PM
7256 - Close and lock all RPM doors	Instruction	Published	04/27/2023 2:21 PM
8260 - 8250 - Reopen Lane; Remark:8249	Procedure Step	Published	09/07/2023 3:09 PM
8250 - Reopen Lane	Instruction	Published	09/07/2023 3:09 PM
8249 - Remove orange safety (traffic control) cones	Remark	Published	09/07/2023 3:09 PM
7842 - 7820 - Inform system operators upon completion of maintenance action; Remark:	Procedure Step	Published	07/07/2023 11:15 PM
7820 - Inform system operators upon completion of maintenance action	Instruction	Published	07/07/2023 10:02 PM
322 - 321 - Document maintenance actions; Remark:	Procedure Step	Published	06/17/2021 9:49 AM
321 - Document maintenance actions	Instruction	Published	04/21/2025 11:19 AM
2869 - 2585 - Document maintenance performed; Remark:2866	Procedure Step	Published	06/18/2021 5:58 PM
2585 - Document maintenance performed	Instruction	Published	07/09/2021 12:15 PM
2866 - Record observations, times, and results for the maintenance report.	Remark	Published	04/21/2025 11:39 AM
4706 - 4705 - Submit report; Remark:4864	Procedure Step	Published	06/29/2022 9:50 AM
4705 - Submit report	Instruction	Published	06/29/2022 9:50 AM
4864 - As specified by management or contractual obligations.	Remark	Published	07/28/2022 1:36 PM
Corrective Maintenance Procedure	Document Type	Published	03/02/2020 3:32 PM
20 minutes	Duration	Published	05/18/2020 5:44 PM
Upon failure of the fuse	Frequency	Published	11/17/2023 6:27 PM
Warning	Annotation Type	Published	03/02/2020 3:25 PM
Caution	Annotation Type	Published	03/02/2020 3:24 PM
Note	Annotation Type	Published	03/02/2020 3:25 PM
Technician 2	Skill Level	Published	04/09/2020 1:17 AM
Keys to access RPM	Replacement Parts	Published	04/27/2023 6:56 PM
Small Phillips (PH1) screwdriver	Tools	Published	05/14/2020 2:48 PM
Medium Phillips (PH2) screwdriver	Tools	Published	04/24/2020 4:40 PM
Orange/yellow safety vest	Replacement Parts	Published	04/27/2023 6:56 PM
Safety shoes	Replacement Parts	Published	04/27/2023 6:56 PM
safety glasses	Replacement Parts	Published	07/02/2023 4:48 PM
Ladder; 2 meters, 6 feet tall; non-conducting if required	Replacement Parts	Published	07/02/2023 4:48 PM
Orange traffic cones	Replacement Parts	Published	04/27/2023 6:56 PM
Small crescent wrench	Tools	Published	07/31/2023 10:46 AM
Disconnect Ethernet cable on top of SC-770 box	រូបភាព	Published	10/04/2023 2:59 PM
LD-260 Disconnect Switch Power Off	រូបភាព	Published	04/24/2023 12:49 PM
Disable tamper switch	រូបភាព	Published	09/07/2023 8:22 PM
Disable Tamper Switch	រូបភាព	Published	06/02/2023 2:28 PM
Infrared Receiver	រូបភាព	Published	09/17/2023 7:09 PM
Infrared Receiver DC	រូបភាព	Published	09/29/2023 11:47 AM
Infrared Disconnect Sensor Cable	រូបភាព	Published	09/17/2023 7:11 PM
Infrared Sensor Disconnect	រូបភាព	Published	09/17/2023 7:12 PM
Unplugged LD-260	រូបភាព	Published	11/17/2023 6:50 PM
LD-260 Switch Power Off	រូបភាព	Published	11/17/2023 6:49 PM
LD-260 Nut	រូបភាព	Published	11/17/2023 7:06 PM
Remove four cover plate screws	រូបភាព	Published	07/31/2023 7:46 PM
LD-260 Cover Removed	រូបភាព	Published	11/17/2023 8:25 PM
LD-260 Fuse	រូបភាព	Published	11/17/2023 7:10 PM
LD-260	រូបភាព	Published	07/31/2023 7:42 PM
LD-260 Disconnect Switch Power On	រូបភាព	Published	06/04/2025 1:28 PM
Infrared Connection	រូបភាព	Published	09/29/2023 12:02 PM
Infrared Cable Installation	រូបភាព	Published	09/17/2023 10:12 PM
Infrared Sensor Cable	រូបភាព	Published	09/17/2023 10:13 PM
Remove Magnet from Tamper.PNG	រូបភាព	Published	09/28/2023 9:37 AM
Remove Magnet on Tamper Switch	រូបភាព	Published	06/02/2023 4:31 PM

DET-RPM-RAP-CM05

Replace fuse in LD-260 load disconnect

Equipment Hierarchy

Rapiscan PM-700 Pedestrian Monitor

Rapiscan VM-250 Vehicle Monitor

Rapiscan TM-850 Rail Monitor

Rapiscan CM-267 Conveyor Monitor

Frequency

Upon failure of the fuse

Technician Level

Technician 2

x 1

Duration

Time increment

20 minutes

Length of time

Tools Required

Keys to access RPM

Small Phillips (PH1) screwdriver

Medium Phillips (PH2) screwdriver

Orange/yellow safety vest

Safety shoes

safety glasses

Ladder; 2 meters, 6 feet tall; non-conducting if required

Orange traffic cones

Small crescent wrench

Materials Required

RPM Maintenance Guide Rev 2.0

5 Amp fast acting fuse 5x20 mm

Originators

David Alexander

Originating Organization

PNNL

Approver

Craig Stinson

Safety Concerns

Traffic

Final Documentation

Corrective maintenance report

Departmental Coordination

Prior to arrival, notify operators concerning expected work, duration, and anticipated alarms and fault indications.

Date of Origin

2020-11-30

Version

0.00

Version #

Revision Description

Updated pillar names

Revision Date

2020-11-30

Revision Author

Angela Moore

Step 1

Main Step

7264 - 1401 - Establish Initial Conditions; Remark:

Step 00

1401 - Establish Initial Conditions

Establish Initial Conditions

7622 - 7592 - Inform system operators; Remark:11335

Step 00

7592 - Inform system operators

Inform system operators

11335 - Upon arrival, brief system operators on expected work, duration, anticipated ...

Upon arrival, brief system operators on expected work, duration, anticipated alarms, and fault indications before starting work.

7268 - 7231 - Close lane; Remark:7233

9053 - Warning : Traffic should temporarily be rerouted or halted during conduction of this pr...

Type

Warning

Traffic should temporarily be rerouted or halted during conduction of this procedure to ensure maintenance provider safety and to prevent unscreened vehicles from passing.

Step 00

7233 - Use orange safety (traffic control) cones to setup barriers. Practice establi...

Use orange safety (traffic control) cones to setup barriers. Practice established safety protocols.

7269 - 7232 - Open RPM door; Remark:7234

Step 00

7234 - Open all doors needed to access components.

Open all doors needed to access components.

7755 - 7679 - Disconnect Ethernet; Remark:11336

7680 - Caution : Make sure to press release button on back of Ethernet cable before removing.

Type

Caution

Make sure to press release button on back of Ethernet cable before removing.

Step 00

11336 - Locate Ethernet connector on top of SC-770 controller. Press release button o...

Locate Ethernet connector on top of SC-770 controller. Press release button on back of connector. Pull connector.

Disconnect Ethernet cable on top of SC-770 box

7270 - 7235 - Power off RPM; Remark:7236

Step 00

7236 - Move LD-260 switch to OFF position. The PWR ON

Move LD-260 switch to OFF position. The PWR ON LED will turn off.

7454 - 7290 - Disable tamper switches; Remark:7416

Step 00

7290 - Disable tamper switches

Disable tamper switches

7416 - Use a magnet to disable tamper switches for all open doors. Use adhesive tape...

Use a magnet to disable tamper switches for all open doors. Use adhesive tape to disable older mechanical switches.

8561 - 7291 - Disable both infrared occupancy sensors; Remark:8514

5291 - Note : It is good practice to verify all cables and connectors are labeled prior to ...

Type

Note

It is good practice to verify all cables and connectors are labeled prior to disconnection.

Step 00

7291 - Disable both infrared occupancy sensors

Disable both infrared occupancy sensors

8514 - Verify sensors mounted in control pillar door are receivers.

Verify sensors mounted in control pillar door are receivers.

9205 - To disconnect sensor cable, turn collar counterclockwise and pull away from s...

To disconnect sensor cable, turn collar counterclockwise and pull away from sensor.

8070 - 8066 - Disconnect upper left connector; Remark:8065

Step 00

8066 - Disconnect upper left connector

Disconnect upper left connector

8065 - The power input connector is a three-pin Molex. Both LEDs should be off when ...

The power input connector is a three-pin Molex. Both LEDs should be off when the power switch is OFF, and the upper left connector is disconnected.

Step 2

Main Step

8077 - 8076 - Uninstall Faulty Fuse; Remark:

Step 00

8075 - 8074 - Remove switch retaining nut; Remark:8073

Step 00

8074 - Remove switch retaining nut

Remove switch retaining nut

8073 - A small box end or crescent wrench may be required to loosen the switch retai...

A small box end or crescent wrench may be required to loosen the switch retaining nut.

8084 - 8083 - Remove four cover plate screws; Remark:8082

Step 00

8083 - Remove four cover plate screws

Remove four cover plate screws

8085 - 8081 - Remove cover plate; Remark:8080

Step 00

8086 - 8079 - Remove failed fuse; Remark:8078

Step 00

8078 - Carefully pull or pry the failed fuse from holder.

Carefully pull or pry the failed fuse from holder.

3397 - 3395 - Label faulty component; Remark:3396

Step 00

3396 - Use tag or tape. Include date of removal, description of failure symptoms, co...

Use tag or tape. Include date of removal, description of failure symptoms, country, site, and lane number. Dispose per Nuclear Smuggling Detection and Deterrence (NSDD) guidance or contractual requirements.

Step 3

Main Step