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22 550-142-301/0123
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Integrated Type Low Water Cuto
1. Test LWCO using control LWCO TEST button.
a. During burner re, press LWCO TEST button.
b. Burner should shut o.
2. Clean periodically (when warning occurs).
a. Turn o power to boiler and wait 5 minutes.
b. Drain boiler to empty.
c. Remove sensor, wipe clean. See Figure 11.
d. Reinstall sensor to specied 18 ft/lbs torque.
e. Rell boiler to pressure, purge air.
f. Turn on boiler power.
g. Ensure proper operation resumes.
Clean Gauge Glass
Normal waterline on a steam boiler is halfway up
gauge glass. See Figure 12. Clean when needed.
!
Boiler pressure must be low to eliminate potential
of severe burns.
1. Close lower gauge cock.
2. Open pet cock.
3. Open lower gauge cock and allow a small amount
of water to ush out through open pet cock.
4. Close pet cock.
5. Open lower gauge cock.
6. If gauge glass breaks, close both gauge cocks
and call a qualied service technician to replace
gauge glass. Do not replace with thin glass
tubing.
Oil Inducer Motor (CGi Boilers)
!
Use only SAE 20 motor oil to lubricate the
inducer motor. Do not use common universal
household oils.
1. Use only SAE 20 motor oil. DO NOT use
household universal oils.
2. Place a few drops of oil in each of the two oiler
cups on the inducer motor.
Maintenance Procedures — PERIODICALLY, continued
Draft - For Engineering Review ONLY Jan. 2023 HC
Figure 11 Integrated type low water cuto
Figure 12 Gauge glass
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