8kW LCS Replacement

Prerequisites

Table 1. Personnel requirements
Required persons	Preliminary requirements	Procedure	Finalization
1	Not Applicable	90 minutes	15 minutes

Table 2. Tools and test equipment
Item	Quantity	Effectivity	Part number	Manufacturer
Standard Tool	1	-	-	-
20L Draining Tank	2	-	-	-
5L Draining Tank	1	-	-	-
Water Hand Pump	1	-	-	-
150MM FUNNEL	1	-	-	-
WATER HOSE SET (500 mm Hose)	2	-	-	-
HOSE BAND 1	2	-	-	-

Table 3. Replacement parts
Item	Quantity	Effectivity	Part number	Manufacturer
LCS (Refer to Illustrated Parts)	1	-	-	-

Table 4. Safety

Warning

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.

Table 5. Required conditions
Condition	Reference	Effectivity
System Power must be turned OFF. Refer to Lockout / Tagout for System Cabinet PDU Main Breaker.	-	-

Remove Front Lower Cover. Refer to SC Cover Removal.
Remove the water manifold access cover of SC.
Close the IN/OUT valves of water manifold.

Figure 1. Water Manifold Access Cover and IN/OUT Valves
Remove top cover of LCS by removing 2 screws.
Remove R side cover of LCS by removing 2 screws.

Figure 2. Cover Removal of LCS
Disconnect the power and signal cables from LCS.

Figure 3. Power and Signal Cables
Set the water hand pump to LCS tank and draining tank.
Drain the all coolant from LCS tank.

Figure 4. Setting of Coolant Draining
Before removing the hoses from LCS, fold and bind each hose to prevent from draining. Spread unused news paper for cloth on the floor.

Figure 5. BIND EACH HOSE
Disconnect hoses from LCS rear panel.
Notice

Before disconnecting hoses of chiller side, make still coolant with the chiller side. If not, the coolant will spill out to floor.
Note:
Be careful the coolant does not spill to floor. If needed, use funnel and 5L tank.

Connect 500 mm hose to inlet and outlet of LCS with clamps.

Figure 6. Hose Setting of LCS Rear Panel
Restore the tank cap and covers of LCS.
Set the new LCS to the site.
Refill the drained coolant to new LCS tank.
Restore LCS and SC with reverse order of procedure.

Verify that four casters are attached on the floor.
Restore the Power. Refer to Lockout / Tagout for System Cabinet PDU Main Breaker.
Check the coolant level by checking that the float is in the range. Refer to Figure 7.

Figure 7. Coolant Level
Verify that there is no abnormal sounds or vibration while power is on.
Verify that LED on Reverse Phase Repay is NOT lit while MCS/LCS is running.

Figure 8. LED on Reverse Phase Repay
Run one head or body scan.
Return the defective LCS and tank which was attached with LCS FRU kit.