3 operation, 4 maintenance and repair, 3 operation -24 – Yokogawa RotaMASS 3-Series User Manual

Page 216: 4 maintenance and repair -24

9. EXplOSION prOTECTEd TYpE INSTrUMENTS

9-24

IM 01R04B04-00E-E 8th edition March 01, 2011 -00

9.3.3 Operation

If the cover of the converter RCCF31 / RCCT3 has to be opened, following instructions must be followed.

CAUTION

1. Confirm that the power cables to the instrument are disconnected.
2. Wait 15 minutes after power is turned off before opening the covers.
3. The covers of display side and terminal box are fixed with special screws, please use Hexagonal

wrench to open the covers.

4. Be sure to lock the cover with special screw using the Hexagonal Wrench after
tightening the cover (see drawing chapter 4.3).
5. Before starting the operation again, be sure to lock the cover with the locking screws

6. Prohibition of specification changes and modifications. Users are prohibited from making any modifications
of specifications or physical configuration, such as adding or changing the configuration of external wiring

ports.

9.3.4 Maintenance and repair

WARNING

The instrument modification of parts replacement by other than authorized representatives of YOKOGAWA

is prohibited and will void the certification.