Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Thermo Sensor

1. Place sensor in hot water up to mounting thread.
2. Check for continuity between terminals on sensor.
3. Continuity should exist with water temperature at 180-190°F. Continuity should not exist with water temperature at 172°F or less.
4. If continuity is not as specified, replace sensor.