K-Patents PR-23-SD Generation 1 User Manual

Page 21

Safe-Drive™ Process Refractometer PR-23-SD Best Practices, Generation 1

Open and remove the four M12 nuts on the bolts holding the

sensor to the isolation valve using a 19 mm or 3/4” wrench.

Turn the hand wheel clockwise until it stops to remove the

sensor from process.

WARNING: If you detect leaking, revert immediately to the

previous step. Do not continue removal until the reason for

leakage has been cleared and fixed.

1. Lift up the isolation valve handle locking plate.
2. Close the isolation valve on by turning the handle a quarter

turn to the left.

IMPORTANT: The isolation valve is properly closed

when the handle points away from the sensor and the

locking plate drops down over the handle.

3. Open the blow-out valve under the isolation valve.

Some process liquid should leak from the valve. If there is

none, the valve may be defective.

WARNING: Watch out for splashing!

4. Carry out box flushing to get rid of any process liquid

inside the isolation valve. See chapter 4.9 Box Flushing
for instructions.

1. Lift the outer casing locking latch.
2. Turn Outer casing a 1/6 turn to the left so that the handle

comes up on top.

4 x M12

140 mm

(5.5")

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