Crown GL-20E Installation & Operation Manual page 28

INSTALLATION AND OPERATION MANUAL, GAS KETTLES
6.0 SERVICE (Continued)
ADDING WATER
It may be necessary to replenish water in the jacket when the low water indicator comes on. Do
so as follows:
1. Unit should be completely cold and off.
2. Lift handle of pressure relief valve to release vacuum in kettle. (Relief valve is at right rear
of kettle).
3. Remove air vent nut on the tee located between kettle and relief valve.
4. Using pure distilled water only, pour the water into the opening. (A funnel will be helpful).
Water will enter the kettle slowly, as air must escape through the same hole. Water should
be added until the water level at the sight glass is half way between the minimum and
maximum levels.
5. When sufficient water has been added, replace and tighten the nut.
6. Vacuum must be re-established. (See Re-establishing Vacuum).
For reference, the total amount of distilled water contained in each unit, and amount to be
added in a low water condition is listed below:
Model
GL-20E
GL-40E
GL-60E
GL-80E/GL-100E
RE-ESTABLISHING VACUUM:
With the kettle completely cold a vacuum of 25 to 30 inches mercury column (M.C.) should be
maintained as indicated in the green zone on the pressure gauge on the front control panel. If
at any time the vacuum is not in the green zone, vacuum should be re-established.
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.
10125R4
Models GL-20E, GL-40E, GL-60E, GL-80E, GL-100E
Total Amount of
Distilled Water
4.8 Gallons
6.9 Gallons
9.5 Gallons
16.3 Gallons
Amount of Water to be Added
in a Low Water Condition
155 fl. oz. (4 L)
236 fl. oz. (7 L)
338 fl. oz. (10 L)
721 fl. oz. (10 L)
28 2017-08-29