Use an 8mm Allen key to remove the
sealing plug, 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. 10
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
sealing plug using an 8mm Allen key.
Oil
The IQT range are factory filled with
80% Texaco Texamatic 9330 automatic
transmission fluid (ATF) and 20%
Kerosene. Equivalent ATF lubricants
meeting the Dexron® 2 or Mercon®
specification may be used. For
operating ambient temperatures below
-20ºC / -4ºF, 20% kerosene by volume
should be added.
IQT actuators do not require regular oil
changes
(refer to Weights and
Measures Section 11, page 71)
.
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.
Using the Setting Tool, the display can
be set to indicate Torque and Position
as follows:
With the actuator displaying Current
Position and selected to Local or Stop,
using the Setting Tool,
PRESS THE
KEY.
The display will split, the top indicating
the instantaneous torque (as a % of
rated), the bottom indicating the
measured position (% open).
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
[01]
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.
63
10
Maintenance, Monitoring
and Troubleshooting cont.
