If control fails to operate as required, perform the following diagnostic checks:
1.
Check to be sure that the water level in the boiler is at or above the level of the probe.
2.
Re-check all wiring to ensure proper connections as specified in boiler manufacturer’s wiring diagrams
or these instructions.
3.
Check to ensure that Teflon
®
tape has not been used on the threaded connection of the electrode
to the boiler.
4.
Re-check the electrical ground connection for the remote sensor and control unit.
5.
Check the quality of the boiler water to ensure adequate conductance.
Troubleshooting
Replace Probe if:
• Teflon® insulator is cracked or worn.
• Probe is loose.
Failure to follow this caution could cause property damage, personal injury or death.
CAUTION
!
Clean probe by wiping with non-abrasive cloth and rinsing with clean water. DO NOT
use sharp instruments to remove any accumulations of rust or scale.
NOTE
MAINTENANCE
SCHEDULE:
•
Test the low water cut-off annually or more frequently.
•
Remove and inspect the self-cleaning probe every 5 years.
•
Replace probe every 10 years.
•
Replace the lo water cut-off control box every 15 years.
ITT
8200 N. Austin Ave.
Morton Grove, IL 60053
tel: 847-966-3700
fax: 847-966-9052
www.mcdonnellmiller.com
McDonnell & Miller
©2007 ITT Corporation
Printed in U.S.A. 11-07 246780
