User Manual - PolyGard
®
CO SPC-1110
Page
12
PolyGard
is a registered trademark of MSR
SPC1110I01
Phone (858) 578-7887 & (888) GO IN
TEC
Fax (858) 578-4633 & (888) FX IN
TEC
Specification subject to change without notice.
IN
TEC
Controls, Inc., P.O. Box 12506, La Jolla, CA 92039
www.inteccontrols.com
Printed in USA 040401
6 Inspection and Service
6.1 Inspection
Inspection and service of the single point controller should be done by a trained technician and executed on a
periodic interval. It is recommended that the sensor operation be verified at least every six months.
6.2 Calibration sensor
(See part 5.3)
•
Service at periodic intervals is to be decided by the person responsible for the gas detection system.
•
If span calibration voltage of 840 mV (see note below) is no longer attainable when applying 200 ppm
carbon monoxide in air, then the sensor element has to be replaced. After the sensor element has been
replaced, a calibration is required.
Note:
If using a different level of span test gas ppm, or different sensor range, then the mV needs to be calculated.
6.3 Replacing sensor element
Static electricity ( see section 4.1).
Sensor should always be installed without power applied, remove fuse “1F1”.
•
Unplug old sensor element out from the sensorboard.
•
Take new sensor element out of original packing and remove the shorting wire on the sensor element
contacts.
•
Plug sensor element in the connector X3 at the sensorboard.
•
After sensor warm-up, turn potentiometer “Span”, located on sensorboard, to its center position.
(Turn the pot 25 rotations counter-clockwise, then 11 rotations clockwise to be centered.)
•
Calibrate (see section 5.3).
