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Power Systems, Inc. 21
4.12 OUT OF SERVICE PROCEDURE
4.12.1 REMOVAL FROM SERVICE
If you cannot exercise the generator every seven days,
and it is to be out of service longer than 90 days, pre-
pare 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 low
oil fault.
4. Set the Auto/Off/Manual switch to OFF and turn
off the utility power to the transfer switch.
Remove the 5A and 15A fuses from the generator
control panel. Disconnect the battery cables as
outlined in “General Hazards” (page 2).
5. While the engine is still warm from running,
drain the oil completely. Refill the crankcase with
oil. See ”Engine Oil Recommendations,” Section
4.3.1 (Page 17).
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.
4.12.2 RETURN TO SERVICE
To return the unit to service after storage, proceed
as follows:
1. Verify that utility power is turned off 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 recommend-
ed oil is used in the engine (see Section 4.3.1,
Page 17). If necessary, drain and refill with the
proper oil.
3. Check the state of the battery. Fill all cells of
unsealed batteries to the proper level with dis-
tilled water. DO NOT USE TAP WATER IN THE
BATTERY. Recharge the battery to 100 percent
state of charge, or, if defective, replace the battery.
See “Specifications,” Section 1.5 (Page 6), for type
and size.
4. Clean and wipe the entire generator.
5. Remove the 5A and 15A fuses from the generator
control panel. Reconnect the battery. Observe bat-
tery polarity. Damage may occur if the battery is
connected incorrectly.
6. Open the fuel shutoff valve.
7. Insert the 5A and 15A fuses into the generator
control panel. Start the unit by moving the
Auto/Off/Manual switch to MANUAL. Allow the
unit to warm up thoroughly.
8. Stop the unit by setting the Auto/Off/Manual
switch to OFF.
9. Turn on the utility power to the transfer switch.
10. Set the Auto/Off/Manual switch to AUTO.
11. Your generator is now ready for service.
NOTE:
If the battery was dead or disconnected, you must
reset the exercise timer.
Section 4 — Maintenance
Guardian Air-cooled 7 kW, 12 kW and 15 kW Generators