Generac Power Systems 16 kW NG, 10 kW LP, 13 kW NG, 7 kW NG, 9 kW NG, 8 kW LP, 17 kW LP manual Transfer

	Table of contents
	Part	Title	PG#
PART 3	3.1.	Description and Components	50
	3.2	Operational Analysis	54
TRANSFER	3.3	Troubleshooting Flow Charts	64
	3.4	Diagnostic Tests	66

SWITCH

Air-cooled, Automatic
Standby Generators
3.1 Description and Components	56	Test 28 – Check 23 And 15B
General 65		Wiring/Connections	76
Enclosure	56	Test 29 – Test Transfer Relay TR	77
Transfer Mechanism	57	Test 30 – Standby Control Circuit	78
Transfer Relay	57	Test 31 – Check Wire 23	78
Neutral Lug	58	Test 32 – Utility Control Circuit	80
Manual Transfer Handle	58	Test 33 – Test Limit Switch SW2 and SW3	82
Terminal Block	58	Test 34 – Check Fuses F1 and F2	82
Fuse Holder	59	Test 35 – Check N1 and N2 Wiring	83
3.2 Operational Analysis	60	Test 36 – Check N1 and N2 Voltage	83
Operational Analysis	60	Test 37 – Check Utility Sensing Voltage
Utility Source Voltage Available	62	at the Circuit Board	84
Utility Source Voltage Failure	63	Test 38 – Check Utility Sense Voltage	84
Transfer To Standby	64	Test 39 – Check Voltage at
Transfer To Standby	65	Terminal Lugs N1, N2	84
Utility Restored	66	Test 40 – Check Battery Charger Supply
Utility Restored, Transfer Switch		Voltage “Pre-Wire Load Center”	86
De-energized	67	Test 41 – Check Battery Charger Output
Utility Restored, Retransfer Back To Utility	68	Voltage “Pre-Wire Load Center”	86
Transfer Switch In Utility	69	Test 42 – Check Wire 0 and Wire15B
3.3 – Troubleshooting Flowcharts	70	“Pre-Wire Load Center”	86
Introduction To Troubleshooting	70	Test 43 – Check Battery Charger
Problem 7 – In Automatic Mode,		Supply Voltage
No Transfer to Standby	70	“RTSN & RTSE Transfer Switch”	87
Problem 8 – In Automatic Mode, Generator		Test 44 – Check Battery Charger
Starts When Loss of Utility Occurs,		Output Voltage
Generator Shuts Down When Utility		“RTSN & RTSE Transfer Switch”	87
Returns But There Is No Retransfer To Utility Power / or		Test 45 – Check Wire 0/
Generator Transfers to Standby During Exercise Or In		“RTSN & RTSE Transfer Switch”	87
Manual Mode	71	Test 46 – Check Battery Charger
Problem 9 – Blown F1 or F2 Fuse	71	Supply Voltage
Problem 10 – Units Starts And Transfer		“GenReady Load Center”	90
Occurs When Utility Power Is On	72	Test 47 – Check Battery Charger
Problem 11 – No Battery Charge		Output Voltage
(Pre-Packed Load Center)	73	“GenReady Load Center”	90
Problem 12 – No Battery Charge		Test 48 – Check Wire 0/15B
(RTSN + RTSE Transfer Switch)	73	“GenReady Load Center”	90
Problem 13 – No Battery Charge		Test 49 – Check Battery Charger
(Gen-Ready Load Center)	73	Supply Voltage
Problem 14 – No Battery Charge		“Load Shed Transfer Switch”	92
(Load Shed Transfer Switch)	73	Test 50 – Check Battery Charger
3.4 Diagnostic Tests	74	Output Voltage
General	74	“Load Shed Transfer Switch”	92
Test 26 – Check Voltage at		Test 51 – Check Wire 0 and Wire 15B
Terminal Lugs E1, E2	74	“Load Shed Transfer Switch”	94
Test 27 – Check Manual Transfer Switch Operation	75

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