Keystoker Koker Installation, Operation And Maintenance Manual

Keystoker Koker Installation, Operation And Maintenance Manual

Stoker coal stoves

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Installation, Operation and Maintenance
Manual
Koker, Koker Lite & Econo 90
Stoker Coal Stoves
Koker Stove Shown
© June 2019 REV 4

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Questions and answers

samcontette
January 23, 2025

my joker 90 is not keeping up temperature

1 comments:
Mr. Anderson
February 10, 2025

Your Keystoker Koker may not be maintaining temperature due to several possible reasons:

1. Thermostat Setting – Ensure the top pointer is set to the desired temperature and the bottom pointer reflects room temperature. If room temperature falls below the set point, the relay should activate the gear motor to push fresh coal onto the grate.

2. Feeder Motor Issue – If the N.O. (normally open) circuit is not powered, the feeder motor may not be receiving power. Check if the N.C. (normally closed) circuit is powered and whether the green light indicator is on.

3. Fan Limit Switch Settings – The center pointer should be set around 160°F to turn the convection blower on, and the low pointer at around 120°F to turn it off. If these settings are incorrect, the blower may not be functioning properly.

4. High Limit Safety Triggered – If the stove reaches 200°F, the high-limit pointer will stop the gear motor from pushing coal onto the grate. Ensure the stove is not overheating and triggering this safety feature.

5. Coal Supply – Check the coal hopper to ensure it has enough fuel and that coal is being properly fed onto the grate.

6. Mechanical Issues – Inspect the stoker mechanism, pusher bar, and cam adjustment to ensure coal is being fed correctly.

If the issue persists, further troubleshooting of electrical connections and mechanical components may be necessary.

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This manual is also suitable for:

Koker liteEcono 90

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