Vulcan-Hart k20GLT Hot Beverage Maker User Manual


 
Fig. 36
1. With the kettle at room temperature, verify
pressure gauge is in the vacuum zone and
reading 25 to 30 in. Hg.
A. If vacuum is below minimum listed, air must
be removed from reservoir jacket. Continue
with procedure to vent as necessary.
2. Place kettle in full upright position (tilting models
only).
3. Ensure water level in the jacket is visible in the
sight glass. The visible level should be
approximately 1/3.
A. If water level is less than 1/4 in the sight
glass (barely visible) or the low water light is
lit, proceed to FILLING THE RESERVOIR
JACKET.
4. Turn power switch on.
5. Set temperature dial to highest setting. Allow
kettle to heat until the jacket pressure reaches 10
PSI.
Pressure Relief Valve Exhaust. DO
NOT connect to building water, gas, or steam supply.
DO NOT block or restrict.
Hot steam. The kettle and its parts
are hot. Use care when operating, cleaning or
servicing the kettle.
6. Open pressure relief valve for approximately 10
seconds. Allow valve to snap shut to seal.
Current Construction
Previous Construction
7. Turn power switch off and allow kettle to cool
(room temperature).
Verify pressure gauge reading is within the
correct vacuum range.
A. If reading is below minimum listed or will not
maintain proper vacuum, check all threaded
fittings extending from the kettle couplings
for leaks and tightness.
1) Check pressure relief valve for leaks
from poor valve seating or built up
debris. Manually operate the valve
several times to reseat. Allow valve to
snap shut to seal. Repeat venting
procedure.
2) If pressure relief valve is
malfunctioning, install a replacement
and check for proper operation.
K Series Gas Kettles 2/3 Jacketed Stationary and Tilting - SERVICE PROCEDURES AND ADJUSTMENTS
F45461 Rev. A (0713) Page 20 of 44