Contactor for Emegency Off

Prerequisites

Table 1. Personnel requirements
Required persons	Preliminary requirements	Procedure	Finalization
1	Not Applicable	60 minutes	Not Applicable

Table 2. Tools and test equipment
Item	Quantity	Effectivity	Part number	Manufacturer
Standard Tool	1	-	-	-

Table 3. Replacement parts
Item	Quantity	Effectivity	Part number	Manufacturer
Contactor for emegency off (Refer to Illustrated Parts)	1	-	-	-

Table 4. Safety

DANGER

ELECTROCUTION HAZARD!

DANGEROUS AND OR FATAL VOLTAGES ARE PRESENT IN THE ENERGIZED CABINET.

Follow LOTO steps as given in first section of this document to disable and verify safe voltage levels.

DANGER

HOT SURFACE OF TRANSFORMER.

SURFACE TEMPERATURE OF TRANSFORMER WILL BE OVER 60°C (140°F) WHILE SYSTEM IS IN OPERATION.

EVEN THOUGH THE POWER IS TURNED OFF, THE HEAT WILL REMAIN FOR A LONG TIME. CONTACT WITH SURFACE WILL RESULT IN BURNS. DO NOT TOUCH TRANSFORMER.

Table 5. Required conditions
Condition	Reference	Effectivity
PDU and Service Disconnect Panel (or Main Disconnect Panel) must be turned OFF. Refer to Lockout / Tagout for MDP(Main Disconnect Panel) or Facility PDU .	-	-

Remove SC Rear cover of magnet room side. Refer to SC Cover Removal.
Remove PDU access cover by loosening 20 screws.

Figure 1. Remove PDU Access cover
Loosen 6 screws and disconnect 6 cables from the upper contactor terminal.
Remove Contactor Cover.

Figure 2. Remove Contactor Cover
Loosen 4 screws and disconnect 4 cables from the lower contactor terminal.

Figure 3. Remove cables
Remove the contoctor by pulling the lever to lower direction with flat screwdriver.

Figure 4. Contoctor Removal
Restore contactor by the reverse order of the removal.

Restore Power for main input circuit breaker.
Restore the Power. Refer to Lockout / Tagout for MDP(Main Disconnect Panel) or Facility PDU.
Run one head or body scan.