Generac 20kW — 20

For the Generac 20kW.

Procedure

5. Use the manual transfer handle inside the transfer switch to move the main contacts back to their UTILITY position, i.e., loads connected to the utility power source (Figure 3.2).
6. Turn ON the utility power supply to the transfer switch using the means provided.
7. Set the system to automatic operation as outlined in Automatic Transfer Operation section.
3.5 SIDE COMPARTMENT (FIGURES 3.3 & 3.4) Local codes may require this compartment to be locked. A hasp is provided so the owner can secure the compartment with their own padlock. Check local codes in the area.
3.5.1 MAIN CIRCUIT BREAKER This is a 2-pole breaker rated according to the Specifications sec- tion.
3.5.2 EXTERIOR READY LIGHTS Green LED ‘Ready’ light is on when utility is present and switch • is in AUTO indicating the generator is ready and when the gen- erator is running. Red LED ‘Alarm’ light is on when the generator is OFF or a fault • is detected. (See the Protections Systems section.) Yellow LED ‘Maintenance’ light (See the Protections Systems • section.)
3.5.3 120 VAC GFCI OUTLET & 15 AMP BREAKER (17 & 20 KW ONLY) These models are equipped with an external, 15 amp, 120 volt, GFCI convenience outlet that is located in a compartment on the right side of generator (Figure 1.3). When the generator is running, in the absence of utility power, this outlet may also be used to power items outside your home such as lights or power tools. This outlet may also be used when utility power is present by running the generator in manual mode. This outlet does not provide power if the generator is not running. This outlet is protected by a 15 amp circuit breaker in the same com- partment as the outlet. (Do not use when the generator is running in exercise mode.) Figure 3.3 – Side Compartment Figure 3.4 – Open Side Compartment 120V GFCI Outlet 15 Amp Outlet Breaker Main Circuit Breaker LED Indicator Lights
3.6 PROTECTION SYSTEMS
3.6.1 ALARMS Highest Priority (Latching) Displayed on the control panel and the external red LED. They must be cleared before the alarm message goes away. The alarm log records each occurrence (see Appendix - "Menu System"). Low Oil Pressure (Shutdown Alarm) A five (5) second delay on start-up and seven (7) second delay once the engine is running. This switch (Figure 3.5) has normally closed contacts that are held open by engine oil pressure during operation. Should the oil pressure drop below the five (5) PSI range, switch contacts close and the engine shuts down. The unit should not be restarted until oil level is verified. High Engine Temperature (Shutdown Alarm – Auto Reset) A 10 second delay on start-up and one (1) second delay before shutdown. Auto reset when the condition clears and restart the engine if a valid start signal is still present. This switch’s contacts (Figure 3.5) close if the temperature should exceed approximately 144° C (293° F), initiating an engine shut- down. Once the oil temperature drops to a safe level the switch’s contacts open again. Over Crank (Shutdown Alarm) This occurs if the engine has not started within the specified crank cycle. (See "Cranking" section.) NOTE: The oil drain hose may be routed in the opposite direction as shown in figure. Operation

Source: manual:9f84685f-0bec-42e0-a4e9-5c2c50b4b67b.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.