Protection Systems - Generac Power Systems 8 kW Owner's Manual

Figure 3.5 – Open Side Compartment
120V GFCI Outlet
LED Indicator Lights
3.6

PROTECTION SYSTEMS

3.6.1 ALARMS
Highest Priority (Latching) Displayed on the control panel and
the external red LED (V-twins only). They must be cleared before
the alarm message goes away. The alarm log records each occur-
rence (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 3.6) 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 3.6) 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.)
15 Amp Outlet Breaker
Main Circuit Breaker
Section 3 — Operation
Air-cooled Generators
Figure 3.6 – Low Oil Pressure and
High Temperature Switches
Low Oil Switch
Oil Filter
Oil
Drain
Hose
The oil drain hose may be routed in the opposite
direction as shown in figure.
Over Speed (Shutdown Alarm)
4320 RPM for three (3) seconds or 4500 RPM immediately. This
feature protects the generator from damage by shutting it down
if it happens to run faster than the preset limit. This protection
also prevents the generator from supplying an output that could
potentially damage appliances connected to the generator circuit.
Contact the nearest Dealer if this failure occurs.
RPM Sense Loss (Shutdown Alarm)
During cranking, if the Control Board does not see a valid RPM
signal within three (3) seconds, it will shut down and lock out on
RPM sense loss. While engine is running, if RPM signal is lost for
one (1) second the Control Board will shut the engine down, wait
15 seconds, then re-crank the engine. If no RPM signal is detected
within the first three (3) seconds of cranking, the Control Board
will shut the engine down and latch out on RPM sensor loss. If the
RPM signal is detected, the engine will start and run normally. If
the RPM signal is subsequently lost again, the Control Board will
try one more re-crank attempt before latching out and displaying
the RPM sensor failure message.
Under-frequency (Shutdown Alarm)
After starting, if the generator stays under frequency for more than
30 seconds it will shut down. The under-frequency setting is 50
Hz.
Internal Fault (Shutdown Alarm)
This alarm cannot be cleared, call service dealer.
High Temp Switch
NOTE:
21