Load Shed Functionality; Transfer Switch Manual Operation; Transfer To Generator Power; Transfer Back To Utility Power - Generac Power Systems 6055 Owner's Manual

3.7.2— Load Shed Functionality
The Synergy product Transfer Switch includes an Overload Prevention Control Board (OPCB) to shed critical loads.
The OPCB, commonly referred to as the Load Shed Board, has "Fast Load Shed" capability, which effectively prevents
large loads from stalling the engine. ALL LOADS GREATER THAN 10 kW OR 2 HP (MOTORS) MUST BE CON-
NECTED TO THE OPCB. If natural gas is the selected fuel type, then all loads greater than 9kW must be con-
nected to the OPCB. Examples of a large load are a 3T air conditioner, 3 HP well pump, 3 HP sump pump, etc.
When the generator senses the application of a large load (greater than 10 kW or 2HP) while the engine is at low
speed, the load is instantly shed (within milliseconds) and the engine is instructed to run at 3600 RPM. This action pre-
vents stalling of the engine. The loads are then reapplied when the engine is back up to speed. Normal loads take
about six seconds. Large loads, such as an air conditioner, have specially designated connections on the OPCB, and
are only reapplied after five minutes (to protect the air conditioner motor).
See the Transfer Switch Owner's Manual for a complete description.
3.8 — Transfer Switch Manual Operation
DO NOT attempt to activate the transfer switch manually until all power voltage supplies to the switch
have been completely turned off. Failure to turn off all power voltage supplies may result in extremely
hazardous and possibly fatal electrical shock.
Prior to automatic operation, manually exercise the transfer switch to verify that there is no binding or interference with
proper operation of the mechanism. Manual operation of the transfer switch is required if automatic operation fails.
IMPORTANT NOTE: Always use the applicable transfer switch owner's manual for actual manual transfer
switch operation instructions. The information presented here describes a typical V-style transfer switch,
which is not used for three phase applications.
3.8.1— Transfer to Generator Power
When utility power fails, manually transfer to standby power and start the generator as follows:
Press OFF on the control pad.
1.
Move the Generator Disconnect Circuit Breaker switch to the OFF (Open) position.
2.
Turn off the utility power supply to the transfer switch using the means provided (such as a utility main line circuit
3.
breaker).
Use the manual transfer handle inside the transfer switch to move the main contacts to the STANDBY position
4.
(loads connected to the standby power source).
Press MANUAL on the control pad. The engine cranks and starts.
5.
Allow the engine to run for 20 seconds to bring it up to normal operating speed.
6.
Move the Generator Disconnect Circuit Breaker switch to the ON (Closed) position.
7.
3.8.2— Transfer Back to Utility Power
When utility power is restored, manually transfer back to utility power and shut down the generator as follows:
NOTE: Verify that utility voltage has returned and is at the proper value.
Move the Generator Disconnect Circuit Breaker switch to the OFF (Open) position.
1.
Allow the engine to run for one minute at no-load to cool down the unit.
2.
Press OFF on the control pad to shut down the engine.
3.
Verify that utility power supply to the transfer switch is turned off.
4.
Use the manual transfer handle inside the transfer switch to move the main contacts to the UTILITY position
5.
(loads connected to the utility power source).
Synergy Automatic Standby Generator Owner's Manual
Operation
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