TorqPlus EM Motor Brake Kit
Installation and Operating Instructions
Bulletin: 21078- 09/01. This bulletin provides installation and operating information for the TorqPlus EM Motor Brake Kit. Should you have
any questions about the controller that are not covered under this bulletin, please contact an authorized Bettis Valve Automation Center or
Bettis Electric Division, Mansfield, Ohio U.S.A., 419-529-4296.
1.0 Caution
Electrical shock and/or explosion hazard may exist. To avoid serious personal injury, death, or property damage due to electrical shock and/or ignition of hazardous atmospheres, turn off all power to the actuator before
removing the actuator cover.
2.0 Kit number and model usage
#1420-02 115 Vac for 300/520 series
#15400-02 115 Vac for 500 series
#15800-02 115 Vac for 800 series
#1420-03 230 Vac for 300/520 series
#15400-03 230 Vac for 500 series
#15800-03 230 Vac for 800 series
#1420-10 12 Vdc for 300/520 series
#15400-10 12 Vdc for 500 series
#15800-10 12 Vdc for 800 series
#1420-11 24 Vdc for 300/520 series
#15400-11 24 Vdc for 500 series
#15800-11 24 Vdc for 800 series
3.0 Inspection
Because this optional product is being supplied as a kit, review of the actuator’s nameplate and the kit utilization information is recommended to insure compatibility before use.
4.0 Documentation
Bettis maintains accurate records on every actuator sold. Completion and transmittal of a Product Modification Report (form #ESO-01) is required.
5.0 Cover Removal
Follow section 7.0 in Bulletin #21077 (TorqPlus EM Series Installation and Operating Instructions) supplied
with the actuator.
TorqPlus EM Motor Brake Kit
Installation and Operating Instructions
300 Series, AC Brake Assembly
6.0 Installation Instructions
300 Series, AC Actuator (reference photo above)
Ø Place the brake bracket over the motor shaft and secure using four (4) #6-32 x 3/8 pan head machine
screws with lockwashers.
Ø Place brake onto the bracket and loosely secure using three (3) #4-40 x 7/8 pan head machine screws.
Ø Insert feeler gauges (0.010 to 0.012 in.) between the brake and the bracket.
Ø Place the brake hub onto the motor shaft with the square portion of the hub inserted tightly into the square
of the brake disk.
Ø Secure the brake hub by tightening the set screws.
Ø Remove the feeler gauges and tighten the #4-40 screws on the brake.
Ø Remove the two motor leads from the capacitor.
Ø Place a “Y” connector on the two empty capacitor terminals and reinstall the motor leads to the proper
terminals.
Ø Install the two leads from the brake to the remaining open terminals of the “Y” connector.
300 Series, DC Brake Assembly
2
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