ABB RHD Series Service Instruction

6 RHD250 to 4000 (Contrac) ELECTRICAL ROTARY ACTUATOR | SEI/RHD250/4000-EN REV. A
3 Lubrication
Mounting position
The spur gearing of the actuator RHD250 / RHD500 / RHD800 /
RHD1250 / RHD2500 / RHD4000 (Contrac) are lubricated with
oil. They contain the max. oil quantity when leaving the
manufacturer. Once the actuator is installed replace the
uppermost check plug by the separately supplied venting plug.
1
Control screw
2
Vent valve
Figure 2: Permissible mounting positions
The mounting positions presented are permissible. To facilitate
mounting and maintenance, however, it is recommended that
you use position IMB 3 For each mounting position, you should
check the specified oil level before commissioning, see Filling
volumes on page 7.
To achieve this, allow for the following minimum distances:
Actuator
A
RHD250
40 mm (1.
57 in)
RHD500 / RHD800
30 mm (1.18 in)
RHD1250 / RHD2500
40 mm (1.57 in)
RHD4000
40 mm (1.57 in)
Oil change
Note
Oils for different temperature ranges may not mixed.
During an oil change, thoroughly remove any oil that may have
escaped to avoid accidents.
Dispose of old oil according to local regulations. Make sure that
the oil does not enter the water cycle. Make sure that any oil
leaking from the device cannot come into contact with hot
components.
Proceed as follows to drain or change the oil:
1. Provide a collecting vessel capable of holding the expected
oil quantity in accordance with Filling volumes on page 7 .
2. Open and release the vent valve, see Mounting position on
page 6.
3. Unscrew the lowermost drain plug to drain the oil.
4. Collect the oil in the collection vessel.
5. Make sure all of the oil has been removed from the actuator
housing.
6. Screw the drain plug back in.
7. Refill with the proper volume of oil in accordance with Filling
volumes on page 7 and securely tighten the vent valve.

ABB RHD Series Specifications

General

Brand	ABB
Model	RHD Series
Category	Controller
Language	English