15
Maintenance
The actuator is constructed with an adequately lubricated gear case
section, this lubricant need never be changed. However, through
disassembly, etc., should it become necessary to refill, we
recommended use of Lubriplate Mag-1 (Temperature range: -60°F
to +300°F )
Thermal Overload
A thermal protective device is provided integral to every motor. This
device will disable the motor control circuit to protect the motor from
damage due to overheating. When the temperature drops to a safe
level, the thermal overload will automatically reset. All RCS motors
are supplied with Class B insulation. The trip points are as follows:
AC motors: 248°F; DC
motors: 194°F.
Duty Cycle
The maximum duty-cycle to be expected without interruption by
thermal cut-off at an ambient temperature of 100 degrees F is 50%.
Storage
The Electripowr actuator must be stored in a clean, dry, temperature
controlled building, that is protected from the weather. Precautions
shall be taken to prevent condensation inside or outside the actuator.
If there is insufficient external temperature and humidity control,
internal heaters must be installed and energized to protect the unit
against condensation from extreme temperature variations. The
actuators shall be stored off the floor on suitable pallets and must be
covered with an unsealed dust protector allowing side and bottom
ventilation.
Troubleshooting
Problem 1:
Actuator is receiving electric power but the
motor does not respond.
Instructions:
1a. Check actuator nameplate to insure correct model and
voltage type is in use.
1b. Check all wiring against installation wiring diagram.
1c. Measure live voltage to insure that actuator is receiving full
rated voltage.
1d. Check cam/travel limit switch position to insure that one
switch is not made and that the actuator is within its
normal open-close rotation limits. This check can be made
using a volt meter connected between one side of the
incoming line (common) and one leg of the motor or
capacitor. This check should show power between
common and one leg only. Power at
the common and both legs or no power at all, would
indicate cam and or wiring adjustment(s) are required.
1e. Check to insure that manual handwheel on Models
MAR-100 through MAR-400 is in automatic operation
(disengaged-up position).
Problem 2:
Actuator is receiving electric power but the
motor only hums.
Instructions:
2a. Perform steps 1a through 1d listed above.
2b. If actuator is equipped with motor brake, check to insure
brake is completely disengaged when power is applied.
Problem 3:
Actuator runs but its operation is erratic.
Instructions:
3a. Check ambient temperature. Standard Electripowr actuators
have a maximum ambient operating temperature rating
of 150°F.
3b. Check duty cycle (frequency of operation). Standard
Electripowr actuators have a maximum duty cycle of 50%
(one “ON” operation followed by an equal “off” period.
3c. Check to insure actuator is not running into a continuous
stall condition.
NOTE:
All Electripowr actuators are manufactured with built-in
thermal overload motor protectors. Should any of the
above cause the protector to open, it will automatically
reset when the motor temperature is lowered to a
safe level.
Locating and Ordering Parts
For ease and accuracy in identifying and ordering spare or
replacement parts, use parts drawings and part lists on the
preceding pages.
Data required from parts drawings and list are:
•
Part number
•
Name of part
To obtain replacement parts, submit the following
information from the actuator nameplate:
•
Serial Number
•
Model Number
•
Voltage
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