TROUBLE SHOOTING (Cont'd.)
TROUBLE
CAUSE
REMEDY
C-1. 4
Lime deposits on interior insulate heating
coils and prevent heat from being
transferred to water.
C-1. 4
Clean out urn. Hard lime deposits may require factory cleaning. Install
water conditioner to prevent lime deposits.
C-1. 5
Thermostats may be cutting off steam
supply before boiling point is reached.
C-1. 5
Adjust thermostats as per instructions on page 6.
C-1. 6
Solenoid on steam line not
opening.
C-1. 6
Check and see if solenoid coil is energized. If coil is energized, pin
inside solenoid is stuck in closed position. Disassemble solenoid and
clean pin and seat. (A rebuilding kit containing a new pin diaphragm is
available from the factory or authorized service company.)
D HEATING SYSTEM, ELECTRIC URNS
NOTE: Before making any adjustments to thermostat, shut off power.
After adjustments have been made. turn on power.
D-1
Urn does not heat up or heats
very slowly.
D-1. 1
Power may be off.
D-1 1
Make sure power switch & thermostat is turned on. If this does not
work, check to make sure that power line to urn has not been turned
off at some other point in the building or that fuse in line is not blown.
D-1. 2
Thermostat may be out of adjustment.
D-1. 2
To check this and adjust thermostat, see instructions on page 5.
D-1. 3
Lime deposits insulate heating elements
preventing heat from being transferred to
water.
D-1. 3
Clean out urn. Hard lime deposits may require factory cleaning. Install
water conditioner to prevent lime deposit.
12LSQ
D-1. 4
Heating elements are burned out
because urn has been operated without
water or with insufficient water. Elements
may be burned out also because of
heavy lime deposits, or because of
natural service life limitations.
D-1. 4
Electrician can check with instruments to determine whether elements
are burned out. If the/are, shut off power to urn. Drain water from
jacket. Remove coffee liner nearest control box to provide access to
inner tank and heating elements. Disconnect cables attached to
heating elements. Caution: Thermostat, capillary tube and bulb
clamped must be undamped by pulling them off. Do not cut capillary
tube. Allow capillary tube and bulb to remain within urn. Unscrew
plugs on which heating elements are mounted and replace with new
heating element assembly ordered from factory. To prevent heating
element burn outs, never operate urn without water. Do not permit
water to boil out.
