Section 4 — Maintenance

Guardian Liquid-cooled 27 kW and 30 kW Generators

‹4.4.3 ENGINE COOLANT

Check coolant level in coolant recovery bottle. See Specifications, Section 1.10.

•Add recommended coolant mixture as necessary.

•Periodically remove radiator pressure cap to make sure the coolant recovery system is functioning properly. Coolant should be at bottom of radiator filler neck. If coolant level is low, inspect gasket in radiator pressure cap. Replace cap, if necessary. To have pressure cap tested, contact an authorized Generac Service Dealer. Inspect cooling system and coolant recovery system for leaks.

4.5MAINTENANCE OWNER/ OPERATOR CAN PERFORM

‹4.5.1 CHECK ENGINE OIL LEVEL

Refer to “Checking Fluid Levels” in Section 4.4.

‹4.5.2 CHECK BATTERY

•Check battery fluid level each week as outlined under “Check Fluid Levels”.

•Check battery cables for condition, tightness, cor- rosion or damage. Clean, tighten or replace as necessary.

‹4.5.3 EXERCISE SYSTEM

Start the generator engine at least once every seven days and let it run at least 20 minutes. See Section 3.6, “Weekly Exercise Cycle”.

‹4.5.4 INSPECT COOLING SYSTEM

•Inspect engine cooling system at least once each month.

•Check hoses for damage, deterioration, leaks, etc. Correct any discrepancies found.

•Check hose clamps for tightness.

‹4.5.5 CHECK ENGINE COOLANT LEVEL

See “Checking Fluid Levels” in Section 4.4.

‹4.5.6 PERFORM VISUAL INSPECTION

Complete a thorough visual inspection of the entire engine-generator monthly. Look for obvious damage, loose, missing or corroded nuts, bolts and other fas- teners. Look for fuel, oil or coolant leaks.

‹4.5.8 CHECK FAN BELT

•Inspect fan belts every three months. Replace any damaged, deteriorated, worn or otherwise defec- tive belt.

•Check fan belt tension. Thumb pressure, exerted midway between pulleys, should deflect about 3/8 to 5/8 inch. Adjust belt tension as required.

‹4.5.9 INSPECT ENGINE GOVERNOR

Visually inspect electronic governor.

DANGER

Do not attempt to adjust the governor. Only

!qualified service facilities should adjust the governor. Excessively high operating speeds are dangerous and increase the risk of personal injury. Low speeds impose a heavy load on the engine when adequate engine power is not available and may shorten engine life. Correct rated frequency and voltage are supplied only at the proper governed speed. Some connected electrical load devices may be damaged by incorrect frequency and/or voltage. Only quali- fied service technicians should adjust the gov- erned speed.

‹4.5.10 CHANGING ENGINE OIL

Refer to maintenance performed by authorized serv- ice facilities for engine oil and filter change frequen- cies.

Drain the oil while the engine is still warm from run- ning. This means warm up the engine, shut it down and drain immediately as follows:

1.Remove OIL DRAIN HOSE from its retaining clip.

2.Loosen and remove OIL DRAIN HOSE CAP. Drain oil completely into suitable container.

3.When all oil has drained, install and tighten OIL DRAIN HOSE CAP, and re-install into its retaining clip.

4.Turn OIL FILTER (Figure 4.2) counterclockwise and remove. Dispose of old filter.

5.Apply light coating of new engine oil to seal of new oil filter. Install FILTER and tighten by hand only.

DO NOT OVERTIGHTEN.

6.Remove OIL FILL CAP. Add recommended oil (see

SPECIFICATIONS). DO NOT FILL ABOVE THE DIPSTICK “FULL” MARK. Crankcase oil capacity is 4.0 U.S. quarts (3.8 liters).

‹4.5.7 INSPECT EXHAUST SYSTEM

Inspect the exhaust system at least once every three months. Check all exhaust system pipes, mufflers, clamps, etc. for condition, tightness, leaks, security, damage.

16 Generac® Power Systems, Inc.

After refilling the crankcase with oil, always

!check oil level on dipstick. NEVER OPERATE ENGINE WITH OIL BELOW THE DIPSTICK “ADD” MARK.

Page 17 Page 19
Page 18
Image 18
Generac Power Systems 004988-1 owner manual ‹ 4.4.3 Engine Coolant, ‹ 4.5.1 Check Engine OIL Level, ‹ 4.5.2 Check Battery
Page 17 Page 19

004988-1 specifications

Generac Power Systems has established itself as a leader in the generator industry, and the Generac Power Systems 004988-1 model exemplifies the company’s commitment to innovation, reliability, and performance. This standby generator is designed to provide seamless power solutions for both residential and commercial applications, ensuring that users remain connected and comfortable even during power outages.

One of the standout features of the 004988-1 model is its automatic transfer switch (ATS), which allows for instant power restoration within seconds of an outage. The ATS continuously monitors the electrical supply and automatically engages the generator when it detects a power failure, eliminating any stress or inconvenience for the user. This feature is particularly beneficial for those who may be away from home during an outage or for businesses that cannot afford downtime.

The 004988-1 is equipped with a powerful engine capable of delivering up to 20 kilowatts of backup power, sufficient to support essential household appliances and systems, such as HVAC, refrigeration, and lighting. Its robust construction ensures durability and longevity, equipped to withstand the rigors of extended use in various environmental conditions.

Another significant characteristic of this model is its emission-friendly design. Generac has incorporated advanced technologies to meet and exceed EPA standards, resulting in a cleaner and more environmentally friendly operation. The generator runs on natural gas or liquid propane, providing users with flexible fuel options and reducing dependency on traditional fuel sources.

Moreover, the 004988-1 comes with smart technology features, including Wi-Fi connectivity. This allows users to monitor and control their generator remotely via a smartphone app. Users can receive real-time notifications, monitor power usage, and conduct maintenance checks, ensuring peak performance of their generator.

The quiet operation of the 004988-1 is also noteworthy, making it an attractive option for residential areas where noise levels can be a concern. Generac has integrated sound-dampening technology, ensuring that the generator operates with minimal noise, allowing users to enjoy peace of mind without disruption.

In summary, the Generac Power Systems 004988-1 is a robust, reliable, and technologically advanced generator that seamlessly integrates into any household or commercial setup. With its automatic transfer switch, high power output, environmentally friendly design, smart technology features, and quiet operation, it stands out as an excellent choice for individuals seeking a dependable power solution for any situation.
Top Page Image Contents