Bryant ASPAS1BBA Owner'S Manual Download Page 11

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Bryant

Be sure the utility power supply is turned off
and the 7.5A and 15A fuses are removed from
the generator control panel, or sparking may
occur at the battery posts as the cables are
attached and cause an explosion.

Servicing of the battery is to be performed or supervised

by personnel knowledgeable of batteries and the

required precautions. Keep unauthorized personnel

away from batteries.
When replacing the battery, use the following type of

battery: Group 26 12-volt DC, negative ground battery

with a rating of 350 cold-cranking amps minimum for 7

kW; 525 cold-cranking amps minimum for 12 and 15 kW

at -17.8

C (0

F) minimum. When using a maintenance-

free battery, it is not necessary to check the specific

gravity or electrolyte level. Have these procedures

performed at the intervals specified in the “Service

Schedule.” A negative ground system is used. Battery

connections are shown on the wiring diagrams. Make

sure the battery is correctly connected and terminals are

tight. Observe battery polarity when connecting the

battery to the generator set.

2.1

BREAK-IN PROCEDURE

Once the unit has been installed and all electrical checks

have been made, it is strongly recommended that the

following “Break-in Procedure” be completed to ensure

correct generator operation in the future.
1. Set the generator’s AUTO/OFF/MANUAL switch to

AUTO.

2. Turn OFF the utility power supply to the transfer

switch using the means provided (such as a utility

main line circuit breaker).

3. The unit will start, and the transfer switch will transfer

to standby.

4. Using the transfer switch’s built-in emergency load

center, turn on circuits to load the generator to

approximately 25% rated load and run the unit for

one hour.

5. Run the unit for one hour at 50% rated load.
6. Run the unit for one hour at 75% rated load.
7. Run the unit for one hour at 100% rated load.
8. Turn ON the utility power supply to the transfer

switch, which will allow the transfer switch to transfer

back to utility power. The unit will continue to run for

one minute and then shut down.

9. Allow the unit to cool.
10. Set the generator’s main circuit breaker to its OFF (or

OPEN) position.

11. Set the generator's AUTO/OFF/MANUAL switch to

OFF. Remove the 7.5A and 15A fuses from the

generator control panel. Disconnect the battery

cables as outlined in “General Hazards” (page 2).

12. Drain the oil and remove the oil filter. Replace the oil

filter according to Section 3.4, “Changing the Oil

Filter”. Replace the oil with synthetic oil as

recommended in Section 3.3, “Changing the Engine

Oil”.

13. Reconnect the battery cables as outlined in “General

Hazards” (page 2) and insert the 7.5A and 15A fuses

into the generator control panel. The generator is

now ready for service.

2.2

USING THE AUTO/OFF/MANUAL
SWITCH (FIGURE 2.1)

2.2.1 “AUTO” POSITION

Selecting this switch position activates fully automatic

system operation. It also allows personnel to start and

exercise the engine every seven days with the setting of

the exercise timer (see Section 2.6). This position also is

used for remote starting, when it is set up.

2.2.2 “OFF” POSITION

This switch position shuts down the engine. This position

also prevents automatic operation.

Figure 2.1 – Generator Control Panel

2.2.3 “MANUAL” POSITION

Set the switch to MANUAL to crank and start the engine.

Transfer to standby power will not occur unless there is a

utility failure.

With the switch set to AUTO, the engine may
crank and start at any time without warning.
Such automatic starting normally occurs when
utility power source voltage drops below a
preset level or during the normal exercise cycle.
To prevent possible injury that might be caused
by such sudden starts, always set the switch to
OFF and remove the fuses before working on
or around the generator or transfer switch.
Then, place a “DO NOT OPERATE” tag on the
generator panel and on the transfer switch.

12 VDC

ACCESSORY

OUTLET 7.5A MAX

EXERCISE

SYST

TIME

SET

AUTO

7.5A

OUTLET FUSE

OFF

MAN.