Eltorque QT Series User Manual

User Manual QT250 and QT800, ID 2021 2.0 July 2018
Page 43 of 86
Eltorque actuators can be operated in several ways:
• As part of a system directly via IAS.
• Via an Eltorque E-VCS which controls the unit.
• Using the E3C tool, which is described in the EC3 Manual.
• Emergency operation where you can operate the actuator manually.
• Failsafe operation is described in Appendix A on page 59.
The control commands and procedures depend on the type of control system
that is used. In this chapter the manual emergency operation is described.
In case of power failure, control system error or another fault preventing normal
operation of the actuator, it is possible to manually operate the actuator without
the need of additional tools.
Table 10: Input and output torque for handwheel
Input torque on handwheel
Output torque on actuator
QT250
QT800
1 Nm
75 Nm
225 Nm
2 Nm
150 Nm
450 Nm
3 Nm
225 Nm
675 Nm
4 Nm
300 Nm
900 Nm
Note! A manual operation will most likely result in an error message in the system.
1. Remove the hand-wheel cover by grabbing the tabs and pulling it straight
up.
2. Turn the hand-wheel clockwise to close or counter-clockwise to open the
valve. The valve position can be seen on the visual indicator in the center of
the hand-wheel and reference is made to the scale, see Figure 33: Position
scale.
Caution! Do not subject the hand wheel to more than the valve MAST or maximum
4Nm on the handwheel, as you may damage the actuator or valve. Below is
a table showing approximate output torque on input torque.

Eltorque QT Series Specifications

General

Brand	Eltorque
Model	QT Series
Category	Controller
Language	English