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CYLINDER GP-AR 2277968 - Caterpillar



2277968 CYLINDER GP-AR Caterpillar parts CYLINDER
Rating:
36
Alternative (cross code) number:
CA2277968
227-7968
2277968
Caterpillar 2277968 CYLINDER GP-AR

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Normal Automatic Operation
When the system is set for normal automatic operation, NORMAL source voltage will be constantly monitored by circuit board action. Should that source voltage drop below a pre-set value and remain at such an unacceptable level for a pre-set time period, automatic generator startup will occur followed by automatic transfer of the load to the STANDBY source.Refer to "Sequence of Operation" section of this manual. To set the system for normal automatic operation, proceed as follows:1. On the switch enclosure door, check the Switch Position indicator lamps. The NORMAL lamp should be ON, indicating that (a) NORMAL source voltage is available to the switch, and (b) the load is connected to the NORMAL source. If necessary, turn OFF all power supplies to the transfer switch and manually operate the main contacts to their NORMAL position (the word "ON" appears in window "A"). See Manual Operation in ("Functional Test" section of this manual).2. In the switch enclosure, set the Maintenance Disconnect Switch to AUTOMATIC.3. On the enclosure door, set the Operating Mode Switch to AUTOMATIC MODE.4. See appropriate standby generator instruction manual. Make sure the generator is set for fully automatic operation.
The generator is now set for fully automatic operation. The engine may crank and start at any time without warning. To prevent possible injury that might be caused by such sudden startup, always disable the auto start circuit before working on or around the generator or transfer switch. To disable the auto start circuit, set the Maintenance Disconnect Switch to its MANUAL position.
Manual Operation - Transfer to STANDBY Source
To manually transfer load circuits to the STANDBY source and start the standby generator, proceed as follows:1. In the transfer switch, set the Maintenance Disconnect Switch to MANUAL.2. Turn off both the NORMAL and STANDBY power supplies to the transfer switch, using whatever means provided (such as the main line circuit breakers).3. See Manual Operation (in "Functional Tests" section of this manual). Manually actuate the Transfer Mechanism to its STANDBY position, i.e., load connected to STANDBY source. The word ON must appear in window "B", "OFF" in window "A".4. Remove the manual handle from the square actuating shaft.5. See appropriate generator manual. Manually start the generator, let it stabilize and warm up.6. Close the STANDBY power source main line circuit breaker, to power load circuits from that source.Manual Operation - Retransfer Back To The NORMAL Source
1. Turn OFF both power supplies to the transfer switch, using whatever means provided (such as the main line circuit breakers).2. Shut the standby generator down manually.3. Manually operate the transfer switch main contacts to their normal position, i.e., LOAD terminals connected to the NORMAL terminals (window "A" indicates ON). See Manual Operation in ("Functional Test" section of this manual).4. Apply normal source power to the transfer switch, by whatever means provided (such as closing the normal source main line circuit breaker).5. Set the system for normal automatic operation (see "Normal Automatic Operation" section of this manual).Conducting A Normal Test Of The System
To


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