1020 Rankin Rd., Houston, TX 77073
P.O. Box 60706, Houston, TX 77205
Te l :
(281) 443-7000
F a x :
(281) 443-6308
F a x :
(281) 443-4802
Copyright© 2001 by Texsteam Operations.
All rights reserved. Printed in U.S.A.
Reproduction in whole or in part is prohibited by law.
Bulletin No. 6005
1M 7/01 SPI
S U R E P O W R
T M
S E R I E S
-
S U R E 4 9
Problem 2:
Actuator is receiving electric power but the motor only hums.
Instructions:
2a. Perform steps 1a through 1c listed above.
2b. Check to insure brake is completely disengaged when power is applied.
Problem 3:
Actuator runs but operation is erratic.
Instructions:
3a. Perform steps 1a through 1c listed above.
3b. Check ambient temperature. Standard Surepowr actuators have a maximum ambient operating temperature rating of 65˚C.
3c. Check duty cycle (frequency of operation). See above for details.
3d. Ensure that actuator is not continuously stalled.
Problem 4:
Motor runs continuously in spring return direction after actuator output shaft has stopped.
Instructions:
4a. Adjust spring return side travel cam/switch so that the cam trips the switch before shaft stops motion.
Problem 5:
Motor runs continuously but output shaft does not turn.
Instructions:
5a. Check for power to the bridge rectifier and clutch solenoid.
Note: Standard Surepowr actuators are manufactured with thermal overload protectors in series with the motor
common. Should any of the above problems cause the protector to open, it will automatically reset when the motor
temperature is lowered to a safe level.
L o c a t i n g a n d O r d e r i n g P a r t s
For ease and accuracy in identifying and ordering spare or replacement parts, submit the following information from unit nameplate.
1. Serial Number
2. Model Number
3. Voltage
