RKI Instruments 65-2301RK - Manual (Page 14)

10 • 65-2300RK/65-2301RK Toxic Detector
Recommended action
1. Verify that the calibration cylinder contains an adequate supply of a fresh test sample.
2. Confirm that you are using the correct calibration cup and regulator for your detector
type. See Table 2 on page 12 for a list of the required calibration cups and regulators.
3. Check the plug-in sensor face and remove any particulate contamination if necessary.
4. If the calibration/response difficulties continue, replace the plug-in sensor as
described later in this section.
5. If the calibration/response difficulties continue, contact RKI Instruments, Inc. for
further instruction.
Replacing Components of the Toxic Detector
This section includes a procedure to replace the plug-in toxic sensor and one to replace the
entire toxic detector assembly. In most cases, it is not necessary to replace the entire
detector assembly.
Replacing The Plug-in Toxic Sensor
CAUTION: The plug-in sensor contains electrolyte which is a dilute acid. Do not disassemble the
sensor when replacing it with a new one. If sensor electrolyte comes in contact with
your skin, wash affected area thoroughly with soap and water.
1. Turn off the controller.
2. Turn off or unplug power to the controller.
3. Unscrew the detector housing cap with the splashguard from the detector housing
body. Make sure not to lose the cap gasket.
4. Unplug and remove the toxic sensor.
5. Carefully plug the replacement sensor into the connector that is located in the detector
housing body.
WARNING: You must replace the plug-in sensor with the same type of sensor that is
installed. A detector cannot be converted from one type of detector to
another by using a different plug-in sensor. For example, if you are
replacing a Cl
2
sensor, you must replace it with a Cl
2
sensor.
6. Make sure the cap gasket is in place and screw the detector housing cap with the
splashguard back onto the detector housing body.
7. Turn on power to the controller.
8. Turn on the controller.
CAUTION: Allow the replacement sensor to warm up for 5 minutes before you continue with the
next step.
9. Calibrate the detector as described in “Calibration” on page 12.