Crown EL-20F Installation & Operation Manual page 19

INSTALLATION AND OPERATION MANUAL, SELF-GENERATING STEAM FULL JACKETED
KETTLES, MODELS EL-20F TO EL-60F, EP-20F TO EP-60F
9.0 TROUBLESHOOTING (Continued)
9.5 AIR VENTING INSTRUCTIONS
Check vacuum/pressure gauge when the kettle is cold. Gauge should be in the green vacuum
zone, indicating a vacuum between 25-30 In. Hg (630 - 730 mm Hg). If not, air must be vented
(removed) for proper heating. Use the following procedures to vent air.
1. Place power switch ON with kettle empty.
2. Set temperature control thermostat to '10'. Heat kettle until indicator light goes off.
3. Using a 7/16" wrench, open bleed vent one full turn for 10 seconds and then close.
(Located on back of kettle, before pressure relief valve.)
WARNING: SCALD HAZARD. Live steam will escape the bleed nut
when opened. Stay clear of live steam when performing this
operation.
4. Cool kettle. Check for proper vacuum in green area of gauge. If vacuum was not
established, repeat steps 1 - 4.
PART NO. 10168R2 19 2013-07-17