YOKOGAWA VY Series - Removing the Amplifier Unit

<3. Maintenance>
12
IM 01F07A01-02EN
3.3 RemovingtheAmplierUnit
IMPORTANT
Do not twist the amplier unit when removing or installing it. Doing so may damage the connector
pins.
WARNING
• In the case of an explosion protected type instrument, make sure that no explosive
atmosphere conditions are present.
• When opening and closing the cover, pay careful attention to the handling of screws and
O-rings to prevent damage and adhesion of foreign matter.
• Replace O-rings if they are damaged or deformed.
• If there is no lubricant on the O-rings, apply silicone-based grease.
Follow the procedure below to remove the amplier unit.
(1) Turn the power OFF.
(2) Remove the cover. When opening the cover of a ameproof type instrument, turn the
locking screws to the right to unlock the cover.
(3) Loosen the two amplier unit mounting screws with a 5.5 mm socket nut driver, and pull the
amplier unit out straight.
If the instrument is equipped with an indicator, remove the indicator before removing the
amplier unit. Follow the procedure described in Section 3.2 to remove the indicator.