Blodgett KLS-100G Installation Operation & Maintenance page 24

RE-ESTABLISHING VACUUM
Periodically check pressure gauge when kettle is cold. Reading should be in green vacuum
zone (below 0 psi). Otherwise air is present and proper heating will not occur. Use the
following procedure to remove air and re-establish vacuum:
With the kettle empty, turn the thermostat knob to the highest temperature. When the
temperature pilot light goes off, open air vent nut one (1) full turn for 20 seconds and then close
and tighten the nut. This should remove the air and any loss in performance should return.
Should the kettle fail to maintain a vacuum after repeated attempts to establish vacuum, further
checks should be made to see if the pressure relief valve is leaking or if there are any leaks in
the pressure relief valve piping, copper lines going to the pressure switch, pressure gauge or
thermostat fitting.
CONTROL CIRCUIT FUSES
The control circuit is protected by a 3 amp fuse which is located inside the control panel, top
right side (120V units).
Should the unit fail to turn on, check this fuse by removing it and either replacing it or testing it
with a continuity tester. If the fuse is good, check the main power circuit breaker, external to
the kettle.
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