Technical Operating Instructions - RMU Type A4

Omega Operating InstructionsRMU Type A4 (with interlock) Index

Date: Made By: Approved By: Rev. no. Section: 29/11/11 ROC PEB 001 Omega 1.0

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RMU Type A4 (with interlock) Insertion ........................................................................................................................ 2.0RMU Type A4 (with interlock) Operation....................................................................................................................... 4.0RMU Type A4 (with interlock) Removal ........................................................................................................................ 5.0

Omega Operating InstructionsRMU Type A4 (with interlock) - Insertion

Section: Rev. no. Approved By: Made By: Date: Omega 001 PEB ROC 29/11/112.0


Locate unit position

• Locate required unit position• Ensure Interlock is in the “unlocked” position• Ensure main disconnector handle is in “Off” position• unlock & open door fully• Ensure unit space is empty and unobstructed

Locate unit

• Position unit in its location• Align unit to slides• Ensure Interlock probe bracket is in the “unlocked” position• Ensure main disconnector is in “Off” position

If unit is fitted with a coding system ensure unit and fixed components match

Insert unit to connected position

• Ensure main disconnector is in “Off” position• Using the handle push the unit to the “Connected” position

Make cable connections

• Ensure main disconnector is in “Off” position• Push\pull in cables from cable compartment• Connect cables to equipment according to manufacturers instructions

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Omega Operating InstructionsRMU Type A4 (with interlock) - Insertion



Close Unit Door

• Ensure main disconnector & handle are in “Off” positions• Ensure Interlock and interlock probe bracket are in the “Unlocked” positions• Close door fully

Lock unit into enclosure

• Unit in “Connected” position• Lock door in closed position• Main Disconnector at “Off“ position • Rotate interlock to “Locked” position• The unit is now available for operation

The main disconnector can be padlocked in the “Off” position

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Omega Operating InstructionsRMU Type A4 (with interlock) - Operation



Check unit status

• Check the unit is in “Connected” position• Ensure unit door is locked in position• Ensure interlock is rotated to the “Locked” position• The unit is now available for operation

Disconnector “On” operation

• Main disconnector can now be rotated to “On” position

When Main disconnector is in “On” position interlock cannot be rotated.

Disconnector “Off” operation

• Main disconnector can now be rotated to “Off” position

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Omega Operating InstructionsRMU Type A4 (with interlock) - Removal



Check unit status

• Unit in “Connected” position• Ensure unit door is locked in position• Ensure interlock in “Locked” position• Ensure main disconnector is in “Off” position

Open unit door

• Unit in “Connected” position• Ensure main disconnector is in “Off“ position • Rotate interlock to “Unlocked” position• Unlock door • Open unit door fully

Disconnect cable connections

• Ensure main disconnector is in “Off” position• Disconnect cables from equipment according to manufacturers instructions• Push\pull cables out to cable compartment to allow free removal of unit.

Remove unit and unlock stop lock

• Ensure there are no obstructions to removal of unit • Using the handle pull the unit out to the stop locked position • Push and hold stoplock up to release (bottom left side of unit)

Omega Operating InstructionsRMU Type A4 (with interlock) - Removal



Remove unit

• Using the handle pull out unit• Remove unit as per handling instructions

Technical Operating Instructions - RMU Type A4

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