68
Heading
AA
Remove the sealing plug using the
appropriate Allen key, ensuring the
‘‘O’’ ring seal remains on the plug.
Disconnect the battery wiring loom
from the battery terminals. Using the
black pull strap, lift the battery out of
the rubber sealing pocket.
Fig. 11.1
Battery Types
For European hazardous area certified
actuators (ATEX) use an Ultralife U9VL
lithium manganese dioxide battery only.
For FM and CSA certified enclosures use
an Ultralife U9VL lithium manganese
dioxide battery. Equivalent, UL
recognised, batteries may be used.
For watertight (WT) actuator enclosures
use an Ultralife U9VL lithium
manganese dioxide battery or any
equivalent 9V battery.
If in doubt regarding the correct battery
type, contact Rotork.
Fitting Replacement Battery
Fit the pull strap around the
replacement battery and insert into
the rubber sealing pocket. Reconnect
the battery wiring loom to the battery
terminals. Refit the battery sealing plug
ensuring ‘‘O’’ ring is in good condition
and correctly fitted. Hand tighten the
sealing plug to 8 Nm (6 lbsft) using the
appropriate Allen key.
Oil
Unless specially ordered for extreme
climatic conditions, Rotork actuators
are dispatched with gearcases filled
with SAE 80EP oil which is suitable for
ambient temperatures ranging from
–22°F / –30°C to 160°F / 70°C.
IQT actuators do not require regular
oil changes (refer to Weights and
Measures Section 12, page 80).
Torque and Position Monitoring
The IQT range of actuators incorporate
real time, instantaneous Torque &
Position monitoring as standard.
Torque & Position can be used to
monitor valve performance during
operation. The effect of process
changes (differential pressure etc.) can
be evaluated. Tight spots in valve travel
can be pinpointed as well as gauging
torque developed through stroke for
torque value setting (refer to pages
22, 23).
Using the Setting Tool, the display can
be set to indicate Torque and Position
as follows:
With the actuator displaying Current
Position, using the Setting Tool,
PRESS THE m KEY.
The lower display will show the torque
value as a percentage and a graphical
representation in the form of a bar
graph.
Example shows 19% (of rated) torque
at 50% open position. Display torque
range: [00] to [99]% of rated torque
in 1% increments. For values of torque
above 99% the display will indicate [HI].
Display position range:
[
] [ ] = valve closed
[00] to [99] = percentage open
[
] = valve open
For a stationary actuator the display
will indicate the actual torque value as
applied by the actuator.
To keep the torque & position display
active press the
+
or
-
keys. The display
will remain active for approximately 5
minutes from the last key operation.
11
Maintenance, Monitoring
and Troubleshooting cont.
Torque = 19%
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