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7
Maintenance
General
The modular structure of the FVP110 increases the ease of maintenance work. This section
describes cleaning and part replacement procedures.
The FVP110 is a precision instrument; read the following carefully when carrying out
maintenance. For calibrations, see “Setup” on page 59
Precautions for CENELEC, and JIS flameproof type instruments:
❑ Flameproof type instruments must be, as a rule, removed to a
non-hazardous area for maintenance and be disassembled and
reassembled to the original state. For details, see “Installation and
Operating Precautions for JIS Flameproof Equipment” on page 265.
❑ On flameproof type instruments the terminal cover is locked by an
Allen head bolt (shrouding bolt). When a shrouding bolt (Figure 39) is
driven clockwise by an Allen wrench, it goes in and cover lock is
released, and the cover can be opened. When a cover is closed it
must be locked by a shrouding bolt. Tighten the shrouding bolt to a
torque of 0.7 N·m.
Figure 39 Shrouding Bolts
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