Replacing OPT100 valves - OPT100

Replacing OPT100 solenoid valves Spare Part Instruction

Document code
Content type
Spare parts
Document type
Spare part manual
  • Valve and seal spare part package (Vaisala item code OPTVALVEKITSP)
  • Adjustable wrench
  • Screwdriver with 4-mm-wide (0.16‑in) slotted head
  • Screwdriver with 6-mm-wide (0.24‑in) slotted head
  • Torque wrench
  • 5-mm Allen key
  • Container for waste oil with at least 5 liter (1.3 gallon) capacity
  • Oil absorption material for controlling possible leaks
  • Rags for wiping off oil
CAUTION Before starting, read the maintenance safety section in the OPT100 User Guide (M211858EN). Familiarize yourself with the safety requirements of the installation site.
CAUTION When performing the replacement outdoors, make sure weather conditions allow safe and clean maintenance. The spare parts and the interior of the DGA monitor must remain dry and clean to avoid equipment damage and contamination of the measurement system.
Wear protective eyewear and gloves.
CE marked solenoid valves are manufactured by Bürkert.
Figure 1. Valve numbers and locations
  1. Stop measurement and complete the uninstallation procedure as instructed in OPT100 User Guide (M211858EN).
    If you are unable to complete the uninstallation procedure due to a faulty valve, close the transformer oil valves and retrieve an oil container for spillage. Change the faulty valve following these instructions until 15. Complete the uninstallation after changing the faulty valve and proceed to change other valves as needed.
  2. Make sure the power is turned off.
  3. Place absorption material suitable for the oil at the bottom of the cabinet to contain any spillage.
  4. Loosen the screw of the valve connector.
  5. Remove the connector from the valve and store the rubber gasket for later use.
  6. Remove the valve by opening the 2 screws that are NOT sealed with red paint. Do not use torque wrench to loosen screws.