Guardian 4721, Руководство по ремонту

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Page 39
PART TITLE PAGE
3.1 Description and Components 40
3.2 Operational Analysis 44
3.3 Troubleshooting Flow Charts 48
Problem 1 - In Automatic Mode,
No Transfer to Standby 48
Problem 2 - In Automatic Mode,
No Transfer Back to Utility 49
Problem 3 - In Automatic Mode, Generator Starts
and Transfer to Standby Occurs When
Utility Source Voltage is Available
49
3.4 Diagnostic Tests 50
TABLE OF CONTENTS
1.5 LITER PREPACKAGED
HOME STANDBY
GENERATORS
PART 3
“V-TYPE”
PREPACKAGED
TRANSFER
SWITCHES
TEST DESCRIPTION ......................................PAGE
1 Check Voltage at Terminal Lugs E1, E2 ............ 50
2 Check Voltage at Standby Closing Coil C2 ........ 50
3 Test Transfer Relay TR ...................................... 51
4 Check Manual Transfer Switch Operation .......... 51
5 Test Limit Switch XB1 ........................................ 52
6 Check Wiring and Wiring Connections .............. 53
TEST DESCRIPTION ......................................PAGE
7 Check Voltage at Terminal Lugs N1, N2 ............ 53
8 Check Voltage at Utility 1 and Utility 2 Terminals 53
9 Check Voltage at Utility Closing coil C1 ............ 54
10 Check Fuses F1 and F2 .................................... 54
11 Test Limit Switch XA1 ........................................ 55