VAG Installation and Operating Instructions • 9
Picture 12: Screws sealed to the electric drive on delivery
Penstock dimension A
x A [mm]
Max. operating torque
non-rising stem
rising
stem
150 … 300
30 Nm
30 Nm
400 … 600
40 Nm
40 Nm
700
60 Nm
60 Nm
800, 900
100 Nm
100 Nm
1000, 1200
120 Nm
100 Nm
1300, 1400
180 Nm
180 Nm
1500
200 Nm
200 Nm
1600
220 Nm
220 Nm
1700, 1800
250 Nm
250 Nm
1900 … 4000
defined in project documentation
Table 4 Operating torques
Especially after repair work but also during the set-up of new
equipment, the pipeline system must be cleared again with the
Penstock fully open. As a standard the Penstock is closed by tur-
ning the operating square end clockwise (via an operating key, a
handwheel or an electric actuator).
The dimensions of the stems and actuators allow the operation of
the Penstock by one person using the handwheel. Extensions for
operation are not permissible and may cause damage to the Pen-
stock due to excessive loads.
Limit stops in the Penstock limit the travel. Trying to turn these
components beyond the limit stops using excessive force may
damage the penstock. Check the proper function of the limit
stops by opening and closing the Penstock several times.
The dimensions of the stems and actuators allow the operation of
the Penstock by one person using the handwheel. Extensions for
operation are not permissible and may cause damage to the Pen-
stock due to excessive loads.
Limit stops in the Penstock limit the travel. Trying to turn these
components beyond the limit stops using excessive force may
damage the penstock. Check the proper function of the limit
stops by opening and closing the Penstock several times.
6 Actuators
6.1 General
Directly mounted actuators/drives or VAG extension spindles in
many different types are available for the VAG EROX
®
plus
Pen-
stock.
Actuators mounted directly to the penstock bridge (pneumatic,
hydraulic or electric actuators) are only designed for the operating
conditions specified in the order. The adjustment of the limit stops
(OPEN, CLOSED) must not be changed without the manufacturer‘s
consent.
If the Penstock and the actuator are delivered separately, e.g. on
a headstock, the limit switches must be adjusted on site before
the actuator is put into operation.
The limit switches are adjusted in compliance with the operation
instructions of the respective manufacturer of the actuator, such
as AUMA, Rotork etc. When a gear unit is retrofitted, its nominal
torque and the adjustment of the limit stops (OPEN and CLOSED)
must be adapted to the Penstock.
For detailed information about drives and actuators, please refer
to the operation manuals of the manufacturers (e.g. AUMA,...).
Non-compliance with these Introductions may lead to physical in-
jury and death and/or cause damage to the equipment. If actua-
tors powered by external energy (electric, pneumatic, hydraulic)
have to be disassembled from the Penstock, the safety instruc-
tions in Chapter 1.1 must be observed and the external energy
source must be switched off.
6.2 Operation torques
Operation torques are the maximum required torques [in Nm] at
the drive stem at full differential pressure and with a calculated
safety factor. If required, please contact us to enquire about the
respective torques and/or controlling torques for electric actua-
tors.
6.3 Assembly of the electric actuator
The electric actuator is mounted to the bridge or to remote con-
trol components such as a ROTAG headstock.
The Penstock is switched off:
• path-dependent in open position
• torque-dependent in closed position.
