Section 6: Operational Checks; Introduction; Self Test; Checking Manual Transfer Switch Operation - Generac Power Systems D3.4L G16 Extended Tank Installation Manuallines

Section 6: Operational Checks

Introduction

CAUTION
Equipment damage. Perform functional tests in the
exact order they are presented in the manual.
Failure to do so could result in equipment damage.
NOTE: The following procedures require special tools
and skills. Contact an IASD to perform these tasks.

Self Test

This controller goes through a system self test at startup,
which checks for utility voltage on DC circuits. This check
prevents damage if installer incorrectly connected AC
utility power sense wires into DC terminal block. The con-
troller displays a warning message and locks out genera-
tor if utility voltage is detected, preventing damage to
controller. Remove power to controller to clear this warn-
ing.
Utility voltage must be turned on and present at N1 and
N2 terminals inside generator control panel for this test to
be performed and pass.
Complete the following before starting:
1. Verify generator is in OFF mode. Red LED above
OFF on control panel keypad illuminates to verify
system is OFF.
2. Verify main line circuit breaker switch on generator
control panel is OFF (OPEN).
3. Turn off all circuit breakers/electrical loads to be
powered by generator.
4. Check engine crankcase oil level, coolant level,
and fuel level. Fill if necessary.
5. Prime fuel system according to procedure specified
in owner's manual.
6. Verify both auxiliary shutdown switches are ON (I).
During initial startup only, generator may exceed normal
number of start attempts and experience an "over crank"
fault. This is due to accumulated air in the fuel system
during installation. Reset control board and restart up to
two more times, if necessary. Contact an IASD for assis-
tance if unit fails to start.
Installation Guidelines for Protector Diesel Generators
Checking Manual Transfer Switch
Operation
Electrocution. Do not manually transfer under load.
Disconnect transfer switch from all power sources
prior to manual transfer. Failure to do so will result
(000121)
in death or serious injury, and equipment damage.
Electrocution. High voltage is present at
transfer switch and terminals. Contact with live
terminals will result in death or serious injury.
See Manual Transfer Operation section of owner's man-
ual for procedures.
NOTE: Also use appropriate transfer switch owner's
manual for manual and automatic system test.

Electrical Checks

IMPORTANT NOTE: If unit is three-phase, validate
and match phase rotation of utility, load, and genera-
tor.
Proceed as follows to complete electrical checks:
1. Verify generator is in OFF mode. Red LED above
OFF on control panel illuminates to verify system is
OFF.
2. Verify MLCB switch on generator control panel is
OFF (OPEN).
3. Turn off all circuit breakers/electrical loads to be
powered by generator.
4. Turn on utility power supply to transfer switch using
the means provided (such as a utility main line cir-
cuit breaker).
IMPORTANT NOTE: Transfer switch is now electri-
cally "hot."
5. Use an accurate AC voltmeter to verify utility power
source voltage across transfer switch terminals N1,
N2, and N3 (if three-phase). Normal line-to-line
voltage should be equivalent to rated unit voltage.
6. Verify utility power source voltage across terminals
N1, N2, and N3 (if three-phase) and transfer switch
neutral lug.
7. Turn off utility power supply to transfer switch when
utility supply voltage is compatible with transfer
switch and load circuit ratings.
8. Verify both auxiliary shutdown switches are ON (I).
Operational Checks
DANGER
(000132)
DANGER
(000129)
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