Maintenance; Disassembly - Fisher easy-Drive 200L Instruction Manual

easy-Drive 200L
December 2018
e. Check the value of the analog input in register 40026 If this register shows 0, the 4-20 mA may be wired
backwards. Swap wire and attempt again.
3. Diagnostics show a Motor Stall Fault.
a. If the actuator can not move to its commanded position, the actuator will stop, without damage, and issue a
Motor Stall Fault warning. When the command signal changes outside of the deadband (Modbus register
40053), it will attempt to move again.

Maintenance

The frequency of inspection and maintenance depends on the severity of the service conditions.
WARNING
Avoid personal injury from sudden release of process pressure or bursting of parts. Before performing any maintenance
operations:
D Do not remove the actuator from the valve while the valve is still pressurized.
D Always wear protective gloves, clothing, and eyewear when performing any maintenance operations to avoid personal
injury.
D Disconnect any operating lines providing air pressure, electric power, or a control signal to the actuator. Be sure the
actuator cannot suddenly open or close the valve.
D Use bypass valves or completely shut off the process to isolate the valve from process pressure. Relieve process pressure
on both sides of the valve. Drain the process media from both sides of the valve.
D Back plug away from seat to relieve spring compression.
D Use lock‐out procedures to be sure that the above measures stay in effect while you work on the equipment.
D Check with your process or safety engineer for any additional measures that must be taken to protect against process
media.
WARNING
For explosion­proof applications, ensure the actuator cover is properly bolted before applying power to the actuator.
Personal injury or property damage may result from fire or explosion if power is applied to the actuator with the cover
removed in a hazardous area.
For explosion‐proof applications, install rigid metal conduit and a conduit seal no more than 457 mm (18 in) from the
actuator. Personal injury or property damage may result from explosion if the seal is not installed.
Select wiring and/or cable glands that are rated for the environment of use (such as hazardous area, ingress protection, and
temperature). Failure to use properly rated wiring and/or cable glands can result in personal injury or property damage
from fire or explosion.
Wiring connections must be in accordance with local, regional, and national codes for any given hazardous area approval.
Failure to follow the local, regional, and national codes could result in personal injury or property damage from fire or
explosion.

Disassembly

1. Follow valve manufactur's warnings and instructions for isolating and releasing line pressure prior to disassembling
the valve.
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Instruction Manual
D104331X012