OPERATION
▲! WARNING
Only qualified personnel should operate a disconnect switch. Such personnel should wear appropriate protective equipment such as rubber gloves, hard hat, safety glasses, etc., in accordance with established utility and safety practices.
To close the M3 disconnect switch, place the hookstick in the pull ring on the blade and rotate the blade to an intermediate position as shown in Figure
6.Look away from the switch. Quickly and firmly drive the switch blade to the closed position. Carefully remove the hookstick from the pull ring to avoid opening the switch.
The M3 switch is properly closed when the blade hook is fully engaged with the latch portion of the blade stop as shown in Figure 7.
Toopenthe M3 disconnect switch, place the hookstick in the pull ring as shown in Figure 8.
Look away from the switch. Quickly and firmly pull down and towards the hinge end of the switch at about a 45° angle. Once the switch blade is open, complete the blade travel to its stop position. Carefully remove the hookstick from the pull ring.
▲! WARNING
Do not attempt to open a disconnect switch to interrupt load current. An arc started by opening a disconnect switch under load could cause injury to personnel or damage to equipment.
All Chance M3 disconnect switches include loadbreak hooks for use with a loadbreak tool. To open the switch under load, use only an approved loadbreak tool or device designed for use with switches. Follow the instructions provided with such tools.
Figure 6
Figure 7
Figure 8
3
Part No.
Rev. B 6/96
