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1. DNM - Arc Air Cure Cable Tray Abnormal

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DNM ARC AIR CURE
HEATER CABLE
DEGRADATION
7 June 2022
PROBLEM DEFINITION
What: Degradation of HAK Heater Cable Insulator
Where: DMT1 & DMT2 Arc Air Cure
When: June 7th 2022.
Who: ME, EE, Control Tech
Impact ( any KPI? WIP, output....): No impact to through put but can lead to long USDT if didn’t
detect sooner
Problem Statement (Link 4W1H): Tight space in cable tray → decrease the heat dissipation →
Insulator of Heater Cable degradation
First Solar Proprietary & Confidential - General
24 July 2022 © Copyright First Solar, Inc.
How (detail What): Tight space in cable tray which decrease the heat dissipation
2
First Solar Proprietary & Confidential - General
24 July 2022 © Copyright First Solar, Inc.
ARC AIR CURE LAYOUT
3
DMT1 Data collect table
First Solar Proprietary & Confidential - General
24 July 2022 © Copyright First Solar, Inc.
DMT1 DATA TABLE AND CORRECTIVE ACTION
4
BACKUP
Degradation of cable at HAK U2
DMT1 short term action
First Solar Proprietary & Confidential - General
Degradation of cable at HAK U1
24 July 2022 © Copyright First Solar, Inc.
Degradation of protection tube at HAK U2A
5
DMT2 IR SCANNING ARC AIRCURE UNIT1
First Solar Proprietary & Confidential - General
24 July 2022 © Copyright First Solar, Inc.
 Performed IR scanning at 3 point as
picture beside.
 Maximum temperature is 57.1C for
U1A and 69 C for U1B during tool run
normally.
6
DMT2 IR SCANNING ARC AIRCURE UNIT1
First Solar Proprietary & Confidential - General
24 July 2022 © Copyright First Solar, Inc.
 Performed IR scanning at 3 point as
picture beside.
 Maximum temperature is 76.7C for
U1B and 70C for U1A during tool run
normally.
7
DMT2 IR SCANNING ARC AIRCURE UNIT1
First Solar Proprietary & Confidential - General
24 July 2022 © Copyright First Solar, Inc.
 Performed IR scanning at 4 point as
picture beside.
 Maximum temperature is 64.6C for
U2A and 65.7C for U2B during tool
run normally
8
DMT2 IR SCANNING ARC AIRCURE UNIT1
First Solar Proprietary & Confidential - General
24 July 2022 © Copyright First Solar, Inc.
 Performed IR scanning at 4 point as
picture beside.
 Maximum temperature is 75.6C for
U2B and 74.7C for U2A during tool
run normally
9
SHORT-TERM ACTION
First Solar Proprietary & Confidential - General
24 July 2022 © Copyright First Solar, Inc.
 Currently, we barrier for prevent
access to danger area.
 We will discuss ME team to take
long-term action
10
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