Generac Power Systems 005564-0, Owner'S Manual

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6
1.6.4 COOLANT
Use a mixture of half Propylene glycol base, or Ethylene glycol
base antifreeze, and half de-ionized water. Use only de-ionized
water and Propylene glycol, or Ethylene glycol antifreeze. When
adding coolant, always add the recommended 50-50 mixture.

Do not remove the radiator pressure cap
while the engine is hot or serious burns from
boiling liquid or steam could result.

Propylene glycol base antifreeze is poison-
ous. Do not use mouth to siphon coolant
from the radiator, recovery bottle or any
container. Wash hands thoroughly after han-
dling. Never store used antifreeze in an open
container because animals are attracted to
the smell and taste of antifreeze even though
it is poisonous to them.

Do not use any chromate base rust inhibitor
with propylene glycol base antifreeze. Using
any high silicate antifreeze boosters or addi-
tives also will cause overheating. We also
recommend that any soluble oil inhibitor is
NOT USED for this equipment.
1.6.5 FUEL SYSTEM REQUIREMENTS
AND RECOMMENDATIONS
• Diesel Fuel System: See the Engine-Generator Standby Electric
Power Systems Installer’s Guide and Reference Manual (part
#046622).
1.7 GENERATOR AC LEAD
CONNECTIONS
The electrical wires in the unit’s AC connection (lower) panel
should be installed according to the number of leads and the
voltage/phase required for the application. If there is any question
regarding lead connection, refer to the wiring diagrams at the back
of this manual.
1.7.1 FOUR-LEAD, SINGLE-PHASE STATOR
Four-lead generators are dual voltage coils or windings (Figure
1.1). Units may be assigned the following voltage code:
• “A” units are rated 120/240 VAC, single-phase, 60 Hertz.
Each stator winding in this case delivers a 120 VAC output.
Connecting the two windings in series results in a 240 VAC output.
The neutral line is formed by a junction of stator leads 22 and 33.
Therefore, a 120 VAC load can be connected across leads 11 and
neutral, or across leads 44 and neutral.
Figure 1.1 – Four-lead, Single-phase Stator
1.8 ALTERNATOR POWER
WINDING CONNECTIONS
1.8.1 3-PHASE ALTERNATORS
The generator is designed to supply 3-phase electrical loads.
Electric power is produced in the alternator power windings. These
windings were connected at the factory to the main circuit breaker
with a “Y” configuration as shown in Figure 1.2.
The rated voltage between circuit breaker terminals E1-E2, E1-E3
and E2-E3 is 208V.
The rated voltage between each circuit breaker terminal and the
neutral point 00 is 120V.
Figure 1.2 — Stator Power Winding
Connections - 3-phase, 120/208V (12 Lead)
E1
S10
S12
S4
S5
S2
S8
S11
S6
S3
S9
S7 S1
E2
E3
L - N
L - L
General Information