Controls; Operation; Testing The Automatic Transfer Switch; Maintenance - Briggs & Stratton 1917 Installation & Operator's Manual

Controls

Other than a Manual Override lever, there are no operator
controls because this is an automatic transfer switch. The
manual override is to be used only by licensed professionals.

Operation

To select automatic transfer operation, do the following:
1. Set utility service disconnect circuit breaker in transfer
switch to "On" position.
2. Set generator's main circuit breaker to its "On" position.
3. Install 15 Amp fuse in control panel on generator.
4A. If generator is equipped with a system AUTO/OFF
switch, set switch to "AUTO" position.
B. If generator is equipped with a AUTO/OFF/MANUAL
switch, set switch to "AUTO" position.
The system will now be in automatic operation mode.

Testing the Automatic Transfer Switch

Turn the utility disconnect circuit breaker in the transfer
switch, to the "Off" position. The automatic sequence will
follow. To go back to utility power, turn the utility disconnect
circuit breaker to the "On" position.
Utility Fail
The Home Standby Generator set senses when utility voltage
is below 70 percent of nominal. Engine start sequence is
initiated after 6 second time delay.
Engine Warm-Up
Time delay to allow for engine warm-up before transfer is
fixed at 20 seconds or 50 seconds with removal of jumper
on control board.
Transfer
Transfer from utility to generator supply occurs after voltage
is above set levels. Minimum engine run time is 5 minutes
after transfer.
Utility Pickup
Voltage pickup level is 80 percent of nominal voltage.
Retransfer
Retransfer from generator to utility supply is approximately
10 seconds after utility voltage supply is above pickup level
and minimum run time is completed.
Engine Cool Down
Engine will run for 60 seconds after retransfer.

Maintenance

The transfer switch is designed to be maintenance free under
normal usage. However, inspection and maintenance checks
should be made on a regular basis. Maintenance will consist
mainly of keeping the transfer switch clean.
Visual inspections should be done at least once a month.
Access to transfer switch must not be obstructed. Keep
3 feet (92 cm) clearance around transfer switch. Check for
an accumulation of dirt, moisture and/or corrosion on and
around the enclosure, loose parts/hardware, cracks and/or
discoloration to insulation, and damaged or discolored
components.
Exercise the transfer switch at least once every three months
as described in the previous section Testing the Automatic
Transfer Switch unless a power outage occurs and Home
Generator System has gone through automatic sequence.
Allow generator to run for at least 30 minutes.
Contact a licensed electrical professional to inspect and clean
the inside of your transfer switch at least once a year.

Specifications

UL® 1008 Listed Transfer Switch
Model 01917
Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .NEMA 1
Maximum Load Current: . . . . . . . . . . . . . . . . . . . . .50 Amps
Rated AC Voltage . . . . . . . . . . . . . . . . . . . . . . . . . .250 Volts
Poles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50/60 Hz
Fault Current Rating . . . . .5,000 RMS Symmetrical Amperes
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27 lbs.
Model 01918
Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .NEMA 3R
Maximum Load Current: . . . . . . . . . . . . . . . . . . . . .50 Amps
Rated AC Voltage . . . . . . . . . . . . . . . . . . . . . . . . . .250 Volts
Poles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50/60 Hz
Fault Current Rating . . . . .5,000 RMS Symmetrical Amperes
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34 lbs.
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