Tecnam P2002 JF - Master Switch Relays Replacement

Page 201 2
nd
Edition – Rev 0
24-20
POWER DISTRIBUTION – MAINTENACE PRACTICE
1. MASTER SWITCH RELAYS REPLACEMENT
This procedure applies to the Master Switch relay and external power relay.
Procedure
Step no.
Master switch/external power
relay replacement
Task description
Additional info &
References
1.
Make sure that the Master Switch is set to OFF
2.
Make sure that no external power is provided
3.
Open inspection cap 7a and 7b
See Chapter 06.10
4.
Remove relay electrical wires (4 items) extracting
sheathings.
Refer to figure below. Record
wires positioning
5.
Unscrew bracket screws and remove the relay
6.
Put in place new relay
7.
Fix the bracket screws
8.
Connect relay electrical wires relocating
sheathings.
Make reference to the
recorded wires positioning
9.
Perform functional test:
For Master Switch relay:
 Set Master Switch ON
 Verify positive voltage on the voltmeter
 Set Master Switch OFF
For external power:
 Set Master Switch OFF
 Connect an external power supply
 Verify positive voltage on the voltmeter
 Disconnect external power socket
10.
Close inspection cap 7a and 7b