Section 2: General Information; Actuator Power Operation; Actuator M18 Manual Hydraulic Operation - Emerson Bettis M18 Installation, Operation And Maintenance Manual

Section 2: General Information

April 2021
Section 2: General Information
2.1

Actuator Power Operation

CAUTION
!
Power operation of the actuator with the M18 control knob in any other position than
"AUTO" will cause fluid to overflow in the reservoir.
2.1.1
NOTE:
The control knob (25 - 200) is in front and at the bottom of the M18 pump.
WARNING
!
Do not exceed the maximum operating pressure rating of the actuator.
2.1.2
2.2

Actuator M18 Manual Hydraulic Operation

2.2.1
2.2.2
2.2.3
NOTE:
When the actuator is fully stroked against the travel stops, an increased resistance in
pumping effort will be noticed. Continued operation of the pump simply circulates fluid
through a relief valve.
4
Place the M18 control knob (25 - 200) in the Auto position (middle position).
Apply an operating media, of the correct pressure, through a control valve to the
actuator's power cylinder.
Shut off and exhaust the operating media from both sides of the actuator's
power cylinder.
M18 Manual Hydraulic Operation as follows:
2.2.2.1 Double-Acting Actuators – Select actuator rotation desired by placing
the control knob (25 - 200) in the Manual CW or Manual CCW position.
2.2.2.2 Spring-Return Actuators – Place the control knob (25 - 200) in the
Manual position.
Operate the M18 pump handle until required valve position is reached.
Installation, Operation and Maintenance Manual
VA-DC-000-1879 Rev. 0
General Information