Emerson Daniel 788DVC, User Manual

Page: 73 / 94

9 Planned maintenance
9.1 Maintenance considerations
Read and understand all instructions and operating procedures before performing
maintenance procedure, internal component inspection, or field requirement changes.
To ensure safe and accurate performance, only informed and trained personnel should
install, operate, repair and maintain this product.
Follow the recommendations below before servicing the control valve:
1. Label all parts or place parts in labeled containers during disassembly.
2. Do not use metal clamping devices in direct contact with any control valve part or
surface.
Important
All control valve adjustments were completed at the factory during liquid calibration and
should not require field setup.
9.2 Tools required for mechanical components
Flange installation tools
Follow all best practice procedures when installing or removing flanges.
Control valve components
The control valve does not have pre-installation requirements. If installation is required for
maintenance purposes, use the following tools:
• Socket wrench
• Adjustable wrench
• T-handle or extended Allen wrench
• Arbor press (may be needed for 4- and 6-inch valves)
• Retaining ring pliers
9.3 Disassemble/Assemble the control valve
Before removing the control valve from the system, the following precautions must be
taken:
The meter must be cleaned completely inside the housing components and stored/
shipped as it was received.
1. Label all parts or place parts in labeled containers during disassembly.
2. Do not use metal clamping devices in direct contact with any control valve part or
surface.
User manual Planned maintenance
P/N 3-9008-556 October 2019
User manual 73