Pulse Instruments
System 4 Manual
Version 1.6
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3. Use the “UP” and “DOWN” arrow to adjust
the ORP calibration value to match the
known standard solution value (468).
4. Press “ENT” to save the calibration value.
7.3 Electrode
Replacement
Model PI0020-pH and PI0020-ORP are both high chlorine tolerance electrodes. To replace the
electrode, first disconnect the cable BNC connector by turning it a half turn counterclockwise.
DO NOT USE EXCESSIVE FORCE. Lift the BNC and disconnect it from the electrode.
The electrode will easily slip out of the Electrode Flow Cell. Place the electrode tip in a protective
cap with some storage solution.
Take the new electrode and remove the protective cap at the bottom of the electrode. Calibrate
the electrode using appropriate calibration standards. Place the electrode in the Electrode Flow
Cell and finger-tighten the compression nut.
DO NOT USE EXCESSIVE FORCE.
7.4 Chemical
Metering
Pump
WARNING:
Always wear protective clothing, face shield, safety glasses and gloves when
performing any maintenance or replacement on your pump.
Periodically check the chemical tank level to prevent the pump from operating without liquid.
Check the pump operating condition at least every 6 months: pump head position, screws, bolts,
and seals. Check more frequently if using aggressive chemical. Also, clean the hydraulic parts,
such as valves and filter, as often as needed. (See pump manual for details).
