Drilling Cable Entry Holes - Siemens SITRANS L Compact Operating Instructions

Note
Incorrect torque
Ensure torque is set properly or damage to the device may occur.
• Tighten lid screws to 0.7 to 0.9 Nm (6 to 8 lb-inch).
• Tighten remote lid screws to 1.1 Nm (10 lb-inch).
• Tighten terminal screws in wiring compartment to 0.56 to 0.79 Nm (5 to 7 lb-inch).
4.2.2

Drilling cable entry holes

Cable entry holes can be ordered pre-drilled, or they can be drilled by the customer per the
following procedure.
Condition
• The following have been reviewed: Basic safety notes (Page 15), and General installation
notes (Page 16).
• This procedure (if applicable) must be completed prior to mounting the device.
Procedure
Damage from electrostatic discharge (ESD)
Some components in the device (such as communication cards, or memory cards) are
sensitive to electrostatic discharge and could be damaged. Be sure to handle such
components in a manner that avoids any potential damage due to ESD.
1. Remove the lid from the device by undoing its six lid screws and lifting it off its hinges.
2. Disconnect the display cable by pressing the locking tab and pulling straight out.
3. Remove the four screws holding the plastic cover and motherboard to the enclosure.
4. Remove the plastic cover by pulling it straight out.
5. Remove the motherboard from the enclosure by pulling the board straight out.
6. Drill the required cable entry holes. Ensure conduit holes do not interfere with the lower
areas on the terminal block, circuit board, or communication card. See illustration below.
7. Reinstall the motherboard and plastic cover; secure them with the mounting screws.
8. Reconnect the display cable.
9. Reattach the lid onto the hinges.
10.Follow the applicable procedure to mount the device on wall or panel.
SITRANS LT500 with ultrasonic transducer inputs
Compact Operating Instructions, 02/2024, A5E52021877-AA
CAUTION
Installing/mounting
4.2 Installing/mounting the device
17