Yokogawa EJX210B - Manual (Page 67)

<9. Maintenance>
9-5
IM 01C27C01-01EN
IMPORTANT
Confirm that the zero-adjustment screw pin is
placed properly in the groove on the bracket prior
to tightening the two bosses. If it is not, the zero-
adjustment mechanism will be damaged.
5) Replace the cover.
9.4.4 Replacing the Process Connector
Gaskets
This subsection describes process connector
gasket replacement. (See figure 9.3.)
(a) Loosen the two bolts, and remove the process
connectors.
(b) Replace the process connector gaskets.
(c) Remount the process connectors. Tighten the
bolts securely and uniformly to a torque shown
below, and verify that there are no pressure
leaks.
Model EJX210B
Torque(N·m)
{kgf·m}
39 to 49 {4 to 5}
Process connector gasket
Process connector
Bolt
F0903.ai
Figure 9.3 Removing and Mounting the Process
Connector
9.4.5 Replacing the Battery Pack
Regarding the transmitter with intrinsically safe
approval, the battery pack can be replaced without
removing the device in hazardous area.
■ Preparation
Initialize the remaining battery life by using the
parameter of Reset Energy Left in UAPMO block.
When the battery power is burned and emptied,
initialize the remaining battery after prompt
replacement of the battery pack.
■ Removing
1) Remove the terminal box cover.
2) Loosen the two battery pack mounting screws
(see Figure 9.4).
3) Pull out the Battery pack.
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The battery pack mounting
screws cannot be separated
from the battery pack so as
to prevent drop-off.
Figure 9.4 Removing the Battery Pack
■ Remounting
1) Insert the new battery pack lightly.
2) Push the center of the battery pack and insert it
securely.
3) Tighten the two battery pack mounting screws
to a torque of approximately 0.7 N·m.
4) Replace the terminal box cover.
9.4.6 Replacing the Batteries
The batteries in the battery pack can be replaced.
Batteries are not installed when shipped from the
factory. Assemble the battery pack as follows.
WARNING
Be sure to replace the batteries or disassemble
and assemble the battery pack in a safe location.
Doing so in an explosive area could cause an
explosion.