Maintenance 60
Smart Cap Replacement Procedure
1. Turn off the meter and unplug the probe.
Note: Verify time and date are properly set on the meter, prior to new cap initialization.
2. Clean off the probe body and dry off with cloth.
3.
Remove the expired Smart Cap from the probe by squeezing the cap at the cutout arrow and pulling it off
the probe body (do not twist).
4. Remove the used O‑ring by rolling it off the body.
5. Clean the O‑ring groove and lens with a soft tissue followed by the lens cleaning wipe.
6. Remove the new O‑ring from container and slide it on the probe tip (do not roll or twist the O‑ring).
7.
Use a syringe filled with silicone grease and sparingly lubricate the O‑ring with a thin film of grease. Avoid
getting grease or fingerprints onto the optical window.
8.
Remove the new optical cap from its container and align the cutout arrow on the Smart Cap with the
matching guide on the probe body.
9.
Slide and press the Smart Cap onto the probe body until the cap snaps in place. Once the cap is installed,
it should not be removed unless a new cap is required.
(4) (5) (6)
10. Place the probe in purified water to hydrate the Smart Cap before use for a minimum of 2 hours.
11. Connect the probe DIN connector to the meter DIN socket.
12. Power the meter to initiate the cap timer.
13. Calibrate.
13.3. POLAROGRAPHIC PROBE (HI764833)
General Maintenance
• Inspect membrane surface to ensure is in good condition.
• Rinse carefully with distilled or deionized water to clean.
• Damaged membranes need to be replaced.
• Verify no bubbles are trapped between the cathode and membrane.
Cathode Cleaning
1. Remove cap and inspect platinum cathode is bright and untarnished.
If tarnished, clean with a clean lint‑free cardboard or cloth. Gently polish off any stains.
2. Rinse the probe with deionized or distilled water.
3. Install a new membrane cap using fresh electrolyte.
Note: Use care when handling the probe tip.
Inspect that the insulator has not been cracked.
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