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3. Replace cap.
4. Press start button
control module.
5. Turn main power switch on.
6. Inspect coolant flow in sight glass (SG) for
bubbles and to verify that the coolant is flowing.
7. Inspect coolant loops for leaking fittings or valves.
8. The coolant has reached operating temperature
when the radiator fan turns on. When the fan
turns on, turn the main power switch OFF.
9. Press
to stop the generator.
10. After the coolant system temperature lowers to
ambient temperature, refill or add coolant to the
expansion bottle (HB) cold level indicator line.
11. Turn off manual valve switch (MV) to close the A
and B heat exchanger control valves (VA, VB)
and bypass control valve (VC).
Note
When the manual valve switch (MV)
is in the OFF position, the load center
(LC) LEDs only turn on when the system
opens the valves.
12. If necessary, refill or add coolant to the expansion
bottle (HB) cold level indicator line. See Fig. 42.
Refill Engine Coolant Loop
Refill the engine coolant loop when the coolant is
below the cold level line at ambient temperature.
To avoid burns, do not perform maintenance on
the coolant system until the coolant system has
reached ambient temperature.
3A1705E
twice on the engine
Only use coolant solutions that are compatible with
the system. See Coolant Specifications, page 71.
1. Perform Shutdown, page 63.
2. Remove the engine radiator coolant cap
(RC) and fill until the coolant reaches the
bottom of the neck. Replace cap. See
Coolant Specifications, page 71.
3. Remove the cap from the engine coolant loop
bottle (EB) and fill until the coolant is at the hot
level. Replace cap.
4. Press start button
control module.
5. Turn main power switch ON.
6. Inspect coolant loops for leaking fittings or valves.
7. The coolant has reached operating temperature
when the radiator fan turns on. When the fan
turns on, turn the main power switch OFF.
8. Press
to stop the generator.
9. Add more coolant to expansion bottle (EB)
after the coolant system temperature lowers to
ambient temperature. Repeat until coolant level
stays at cold level when at ambient temperature.
It may take a few cycles to remove all air out of
coolant system.
Coolant Specifications
Only refill the coolant loops with a solution of 50%
distilled or soft water and 50% green ethylene glycol
antifreeze with a corrosion inhibitor. Do not use
common tap water; it contains chlorides and minerals
which form scale on the coolant system walls. Use
only antifreeze that meets specification ASTM
D3306–89, BS658, or AS 2108. A pre-diluted mix
is recommended, such as PEAK Ready Use 50/50
Pre-Diluted.
Maintenance
twice on the engine
71
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