Section 7

DIAGNOSTIC TESTS

3.In Step 7, if Wire 0 reads “Continuity”, but resistor does not measure 1 ohm, replace the Battery Charge Resistor.

4.If all of the Steps in this test pass, perform “Insulation Resistance Test” on page 13.

TEST 18 - TRY CRANKING THE ENGINE

DISCUSSION:

If the Fuel Primer Switch on the generator panel is actuated, but the Fuel Pump does not run (priming function doesn't work), perhaps battery voltage is not available.

PROCEDURE:

Hold the Start-Stop Switch at “START”. The engine should crank and start.

RESULTS:

1.If the engine cranks normally, but the priming function still doesn't work, go to Test 19.

2.If engine will not crank, go to Test 21. Refer to Problem 6 of Section 6.

3.If engine cranks but won't start, go to Problem 7 of Section 6.

4.If engine starts hard and runs rough, go to Problem 8 of Section 6.

PROCEDURE:

1.Set a VOM to read battery voltage (12 VDC).

2.Connect the positive (+) meter test lead to the Wire 15 terminal of the Primer Switch (leave Wire 15 connected to the switch). Connect the negative (-) meter test lead to frame ground. The meter should indicate battery voltage.

3.Connect the positive (+) meter test lead to the Wire 14 terminal of the Primer Switch (leave Wire 14 connected to the switch). Connect the negative (-) meter test lead to a clean frame ground. Set the Start-Stop switch to “START”. The engine should crank and battery voltage should be measured.

4.Connect the positive (+) meter test lead to the Wire 14A termi- nal of the Primer Switch, the negative (-) meter test lead to frame ground.

a.With the Primer Switch NOT actuated, no voltage should be indicated.

b.Actuate the switch to its “PRIME” position and the meter should read battery voltage.

5.For gasoline models, disconnect Connector 2 at the Fuel Pump. Connect the VOM positive (+) test lead to Wire 14A, (Pin 2 of Connector 2) going up to the Control Panel (see Figure 7-12). Connect the VOM negative(-) test lead to frame ground. Repeat Steps 4a and 4b. Battery Voltage should be measured when the Primer Switch is activated.

TEST 19- TEST PRIMER SWITCH

DISCUSSION:

A defective primer switch can prevent the priming function from occurring.

Switch failure can also prevent the engine from start- ing, since the switch is in series with the Wire14 circuit.

(Also see “Fuel Primer Switch,” page 25).

Figure 7-11. – Primer Switch

Figure 7-12. – Harness End of Connector 2

6.For LPG models, disconnect Wire 14A from the LPG Fuel Solenoid (FS)(see Figure 7-13). Connect the VOM positive (+) test lead to Wire 14A. Connect the VOM negative(-) test lead to frame ground. Repeat Steps 4a and 4b. Battery Voltage should be measured when the Primer Switch is activated.

7.Set the VOM to measure resistance at the “Rx1” scale and zero the meter.

a.Disconnect Wire 14 from the Primer Switch.

b.Connect the meter test leads across the Wires 14 and 14A terminals of the switch.

c.With the switch NOT actuated, the meter should read “Continuity”.

Page 47

Page 48 Page 50
Page 49
Image 49
Generac Power Systems 75, 55, 65 Test 18 TRY Cranking the Engine, Test 19- Test Primer Switch, Also see Fuel Primer Switch
Page 48 Page 50

65, 75, 55 specifications

Generac Power Systems has established itself as a leader in power generation, offering a range of high-performance generators suited for residential and commercial applications. Among its lineup, the Generac 55, 65, and 75 kW generators stand out for their reliability, efficiency, and advanced features.

The Generac 55 kW generator is designed to provide a powerful backup solution for medium to large homes or small businesses. It features a robust engine that delivers dependable performance while maintaining fuel efficiency. One of its key characteristics is the True Power Technology, which produces clean and stable power, ensuring that sensitive electronic devices run smoothly without risk of damage. This generator is equipped with a fully automatic transfer switch, allowing for seamless power transition during outages, with minimal disruption.

Moving to the 65 kW model, it offers increased capacity while retaining the fundamental qualities of the 55 kW version. This unit is particularly suited for larger homes or commercial applications that require greater power demands. The 65 kW generator utilizes Generac’s G-Force engine, known for its durability and reduced maintenance needs. Advanced features such as remote monitoring capabilities allow users to check the generator's status from anywhere, providing peace of mind and convenience.

The 75 kW generator takes performance to the next level, making it ideal for even more significant power needs. It is engineered for both quiet operation and enhanced performance, accommodating a wide range of requirements from residential to larger commercial operations. The 75 kW model includes a full-load voltage regulation system that maintains stable power output under varying loads, safeguarding appliances and equipment.

All three models incorporate advanced air-cooled technology, which enhances their efficiency and operational lifespan. Additionally, their corrosion-resistant enclosures ensure durability even in harsh weather conditions, making them suitable for diverse environments. The intuitive LCD display on each unit provides critical information, including runtime hours and maintenance reminders, empowering users with easy access to the generator's performance data.

Overall, Generac Power Systems' 55, 65, and 75 kW generators represent a commitment to quality, reliability, and innovation in backup power solutions. They are designed to meet the demands of modern power consumption while ensuring peace of mind through robust engineering and advanced technology. Whether for home use or commercial applications, these generators provide an effective means to stay prepared for unexpected power outages.
Top Page Image Contents