4.11 Out Of Service Procedure - Generac Power Systems 0043736, 0046265 Owner's Manual

4.11 OUT OF SERVICE PROCEDURE

4.11.1 REMOVAL FROM SERVICE
If the generator cannot exercise every seven days, and it
is to be out of service longer than 90 days, prepare the
generator for storage as follows:
1. Start the engine and let it warm up.
2. Close the fuel shutoff valve in the fuel supply line
and allow the unit to shut down.
3. Once the unit has shut down, it will signal a fault on
the control panel.
4. Set the AUTO/OFF/MANUAL switch to OFF and turn
off the UTILITY power to the transfer switch.
5. While the engine is still warm from running, drain
the oil completely. Refill the crankcase with SAE
15W-40 oil having API Service Class SG, SH or SJ.
6. Attach a tag to the engine indicating the viscosity
and classification of the oil in the crankcase.
7. Remove the spark plug(s) and spray fogging agent
into the spark plug(s) threaded openings. Reinstall
and tighten the spark plug(s).
8. Remove the battery and store it in a cool, dry room
on a wooden board. Never store the battery on any
concrete or earthen floor.
9. Clean and wipe the entire generator.
18 Generac ® Power Systems, Inc.
Section 4 — Maintenance
Guardian Liquid-cooled 40 kW Generator
4.11.2 RETURN TO SERVICE
To return the unit to service after storage, proceed
as follows:
1. Verify that UTILITY power is turned off to the trans-
fer switch and that the AUTO/OFF/MANUAL switch
is set to OFF .
2. Check the tag on the engine for oil viscosity and
classification. Verify that the correct recommended
oil is used in engine, see Section 4.2.1. If necessary,
drain and refill with the proper oil.
3. Check the battery. Fill all cells to the proper level
with distilled water. DO NOT USE TAP WATER IN
THE BATTERY. Remove the battery before charging.
Recharge the battery to 100 percent state of charge,
or, if defective, replace the battery with a 12-volt DC
Group 27F battery rated for 90 amp hours (part #
058665).
4. Clean and wipe the entire generator.
5. Reconnect the battery. Observe battery polarity.
Damage may occur if the battery is connected incor-
rectly.
6. Open the fuel shutoff valve.
7. Start the unit by moving the AUTO/OFF/MANUAL
switch to MANUAL. Allow the unit to warm up thor-
oughly.
8. Stop the unit and set the AUTO/OFF/MANUAL
switch to AUTO.
9. Turn on the UTILITY power to the transfer switch.
10. The generator is now ready for service.