RADIO GP 4391561 - Caterpillar

Image1.17.1
Image1.17.2
16) Tighten two bolts with 10mm socket on shaft stop. Ensure full engagement to allow access to re-install retaining clip back into place. (Step 17)
Image1.18.1
17) Reinstall shaft stop retaining clip.
Image1.19.1
Image1.19.2
18) Rework is now complete. Repeat process for second actuator and (if installed) third actuator.
Additional Rework Required for Units with EMCP 4.2
1) Open AC/DC panel using flat head screwdriver.
Image1.21.1
2) Locate 2 red wires landed on terminal blocks RO8-NC and RO8-C. Use small flat head screwdriver to remove wire from the RO8-NC terminal block and insert wire into RO6-NO terminal block.
Image1.22.1
3) Repeat removal for wire located in RO8-C terminal block and insert into RO6-C terminal block.
4) Ensure EMCP 4.2 setting for Relay Output 6 in control panel is set for "Disable Aux AC Supply", by "View" the "I/O Status" for "Relay Outputs" then scroll to #6.
Image1.24.1
Test Procedure (EMCP 4.2 and EMCP 4.3 and 4.4)
1) After completion of rework, test operation of motorized damper assembly and control circuit.
2) Battery disconnect should be in the "On" position and engine should not be running. In this configuration the damper blades should be in the closed position.
Image1.26.1
3) Start engine to verify damper blades open. When damper blades are completely open, (
4) To simulate loss of power, toggle breaker to the "Off" position. Breaker is located inside the relay panel mounted on the enclosure (see picture below). This breaker removes the 24V power from the actuators. Confirm damper blades open upon loss of power.
Image1.28.1
5) Once confirmed, toggle breaker back to the "On" position. Damper blades should return to the closed position.
6) After testing is complete, damper assembly will be set to the "Fail Open" configuration.
7) Replace all panels and covers removed during the rework process for safety.