Section 1 - Post Installation Start-Up And Adjustments; Before Initial Start Up; Check Transfer Switch Operation; Electrical Checks - Bryant ASPAS1BBA007 Parts, Adjustment And Maintenance Manual

1.1 BEFORE INITIAL START-UP
Before starting, complete the following:
1. Set the generator's main circuit breaker to its OFF (or
open) position.
2. Set the generator's AUTO/OFF/MANUAL switch to
the OFF position.
3. Turn OFF the utility power supply to the transfer
switch using the means provided (such as the utility
main line circuit breaker).
4. Turn OFF all loads connected to the transfer switch
terminals T1 and T2.
5. Check the engine crankcase oil level and, if
necessary, fill to the dipstick FULL mark with the
recommended oil. Do not fill above the FULL mark.
6. Check the fuel supply. Gaseous fuel lines must have
been properly purged and leak tested in accordance
with applicable fuel-gas codes. All fuel shutoff valves
in the fuel supply lines must be open.
Never operate the engine with the oil level
!
below the "Add" mark on the dipstick. Doing
this could damage the engine.
1.2 CHECK TRANSFER SWITCH
OPERATION
Refer to Section 3.5, of the owner's manual for manual
operation procedures.
DANGER
Do not attempt manual transfer switch
operation until all power voltage supplies to
the transfer switch have been positively turned
off. Failure to turn off all power voltage
supplies will result in extremely hazardous and
possibly fatal electrical shock.
1.3

ELECTRICAL CHECKS

Complete electrical checks as follows:
1. Set the generator's main circuit breaker to its OFF (or
open) position.
2. Set the generator's Auto/Off/Manual switch to the
OFF position.
3. Turn OFF all loads connected to the transfer switch
terminals T1 and T2.
4. Turn on the utility power supply to the transfer switch
using the means provided (such as a utility main line
circuit breaker).
DANGER
The transfer switch is now electrically "hot."
Contact with "hot" parts will result in
extremely hazardous and possibly fatal
electrical shock. Proceed with caution.
4 Bryant
Section 1 — Post Installation Start-up and Adjustments
Bryant Air-cooled 7 kW, 12 kW and 15 kW Generators
5. Use an accurate AC voltmeter to check utility power
source voltage across transfer switch terminals N1
and N2. Nominal line-to-line voltage should be 240
volts AC.
6. Check utility power source voltage across terminals
N1 and the transfer switch neutral lug; then across
terminal N2 and neutral. Nominal line-to-neutral
voltage should be 120 volts AC.
7. When certain that utility supply voltage is compatible
with transfer switch and load circuit ratings, turn OFF
the utility power supply to the transfer switch.
8. On the generator panel, set the AUTO/OFF/
MANUAL switch to MANUAL. The engine should
crank and start.
9. Let the engine warm up for about five minutes to
allow internal temperatures to stabilize. Then, set the
generator's main circuit breaker to its ON (or
CLOSED) position.
DANGER
Proceed with caution! Generator power voltage
is now supplied to the transfer switch. Contact
with live transfer switch parts will result in
dangerous and possibly fatal electrical shock.
10. Connect an accurate AC voltmeter and a frequency
meter across transfer switch terminal lugs E1 and E2.
Voltage should be 242-252 volts; frequency should
read about 61-63 Hertz.
11. Connect the AC voltmeter test leads across terminal
lug E1 and neutral; then across E2 and neutral. In
both cases, voltage reading should be 121-126 volts
AC.
12. Set the generator's main circuit breaker to its OFF (or
open) position. Let the engine run at no-load for a few
minutes to stabilize internal engine generator
temperatures.
13. Set the generator's AUTO/OFF/MANUAL switch to
OFF. The engine should shut down.
It is important not to proceed until certain that
generator AC voltage and frequency are correct and
within the stated limits. Generally, if both AC
frequency and voltage are high or low, the engine
governor requires adjustment. If frequency is
correct, but voltage is high or low, the generator's
voltage regulator requires adjustment.
NOTE: