Independence Installation, Operating, and Service Instructions
47
103538-08 - 3/18
c. Five (5) Years or 100,000 switch cycles. Replace
switch and oat mechanisms.
C. Water Feeder and Additional Low Water Cutoff.
Refer to manufacturer's instructions.
D. Vent System. Check annually for:
1. obstructions
2. accumulations of soot
3. deterioration of vent pipe or vent accessories due to
condensation or other reasons
4. proper support—no sags, particularly in horizontal
runs
5. tightness of joints. Remove all accumulations of
soot with wire brush and vacuum
Remove all obstructions. Replace all deteriorated parts
and support properly. Seal all joints.
E. Clean Boiler Flueways.
1. Shut down gas boiler in accordance with lighting/
operating instructions attached to inside of Front
Removable Door. See Figure 35.
2. McDonnell & Miller 67 Float Style Only.
a. Weekly (or more frequently if necessary). Open
blow-off valve to ush sediment chamber.
Follow instructions on Blow-Down Card afxed
to Jacket adjacent to low water cutoff.
b. Annually. Dismantle to extent necessary to
remove obstructions and insure proper function
of working parts.
i. Inspect connecting lines to boiler for
accumulation of mud and scale. Clean as
necessary.
ii. Examine wiring for brittle or worn
insulation and clean electrical contact.
iii. Inspect solder joints on bellows and oat.
Check oat for evidence of collapse. Check
mercury bulb (where applicable) for
mercury separation or discoloration. Do not
attempt to repair mechanisms in eld.
Complete replacement mechanisms,
including gaskets and instructions, are
available from low water cutoff
manufacturer.
Figure 46: Boiler Flueway Cleaning
X. Service Instructions (continued)