Guardian Technologies 004725-2, 004725-3, 004723-0, 004726-0 Unpacking, Lifting the Generator

Section 1 — General Information

Guardian Liquid-cooled 15 kW, 20 kW and 25 kW Generators

Figure 1.6 - Low Coolant Level Sensor	• LED 2 is YELLOW. This LED is on when the circuit
	board battery charger is on. This LED will cycle on
	and off with the battery charger, 4.85 hours on the
	4.85 hours off.

• LED 3 is GREEN. This LED will flash when the cir- cuit board has load voltage available to it. This LED will function when voltage is available across T1 and T2.

‹ 1.7.6 OVERCRANK SHUTDOWN

After 90 seconds of crank-rest cycles, this function ends cranking if the engine fails to start in that 90-second span.

‹1.7.4 OVERSPEED SHUTDOWN

The Pre-pack circuit board on liquid cooled units receives AC frequency (rpm) signals directly from the stator AC power windings, via sensing leads S15 and S16. Should AC frequency exceed about 72 Hz, cir- cuit board action will automatically shutdown the engine (Figure 1.7).

*Rated power of generator is subject to and limit- ed by such factors as ambient temperature, alti- tude, engine condition, and other factors. Engine power will decrease about 3.5% for each 1000 feet above sea level and will decrease an additional 1% for each 10°F above 60°F. Maximum output power of the generator is limited by maximum engine power.

Figure 1.7 - Control Module Assembly

Circuit Board

‹1.7.6 DC FUSE

This clearly labeled fuse is located on the front panel of the control system. It protects the panel wiring and components from damaging overload. Always remove this fuse before commencing work on the generator. The unit will not start or crank if the fuse is blown. Replace the fuse with one of the same size, type, and rating. Generac normally uses an AGC fuse rated at 15 amps (part number 022676).

1.8UNPACKING

‹1.8.1 UNPACKING PRECAUTIONS

Handle shipping cartons and crates with care. Use care to avoid damage from dropping, bumping, colli- sion, etc. Store and unpack cartons with the proper side up, as noted on the shipping carton.

‹1.8.2 INSPECTION

M14

J2

E

M15

R69

CR19

CR8

R70

R71

R72

U13

U14

PRE-PACKAGED STANDBY

U15

A

C17

5M1M8

R54

Q7

R1

C1

C18

U1

C12

M10

C21

R68

R60

17

C25

U16

SW1

R2

R3

BR1

U12

C3

C24

R56 CR1

Q9

C5

C2

U2

R12

C4

Q1

U6

C

R20 CR2

R6 R21

R52 R36

CR37

K4

R14

R15

R13

R17 R16

R18

CR38

R22

CR12

R19

R31

R30

R7

U7

CR3

R40

R41

R39 R35

R38

CR20

R37

R5

R4

R8

R51

R74

R48

U3

R11 R10

CR7

Q4

CR21

R82

R67

K2

R50

Q5

Q12

CR18

CR17

U10

C23

R27

R29

R33

R32

Q2

CR40

CR34

Q3

CR29

CR24

C20

K3

R78

Q11

C8

CR16

R25

R26

C15

Q15

R85

R86

C10

C9

C11

LED2

U20

1

C14

C16

C7

J1

K1

R63

M9

CR33

CR35

R66

R81

R53

R57

R59

CR32

R61

CR30

R65

R47

R46

R44

R42

R43

M2

Q6

Q13

U17

					M3
		R77	R75	R76	R84
					Q14
			C22	U5	U4	LED3
U18
					U19
CR36	CR15	CR14	CR13	R23	R24
		U9			U8	C19
		R62
					Q16
						LED1
	R87	R9	R88	R83	M4

After unpacking, carefully inspect the generator for any damage that may have occurred during ship- ment. If loss or damage is noted at the time of deliv- ery, have the person(s) making delivery note all dam- age on the freight bill or affix their signature under the consignor’s memo of loss or damage.

1.9LIFTING THE GENERATOR

When lifting or hoisting equipment is used,

CR41

R55C13

2002 GENERAC POWER SYSTEMS, ASSY #076009A

CUT R83 FOR 50HZ

!	be careful not to touch overhead power lines.
	The generators weight of more than 900
	pounds requires proper tools, equipment, and

‹1.7.5 PCB OPERATION LED’S

•LED 1 is RED. The LED is on when utility sensing is NOT available to the circuit board. This LED will function only when the Auto/Off/Manual switch is set in the Auto position.

qualified personnel to be used in all phases of

handling and unpacking.

6 Generac® Power Systems, Inc.