Carrier 26H - Manual (Page 50)

26H
S E R V I C E Carrier
INSULATED SECTION
OF BIN THERMOSTAT
CAPILLARY-
BIN
THERMOSTAT
BULB
FIG. 30 - RIGHT SIDE OF MACHINE SECTION
the bin thermostat power element from this control
and change the control mechanism without disturbing
the refrigerant system. If the thermostat bulb is
damaged, it also can be replaced separately. The
unit will not operate if the thermostat bulb has
lost its charge.
The control bulb of the bin thermostat is mounted
on a bracket near the top of the storage compart­
ment, or on the bin partition if one is used.
When the ice in the compartment comes in contact
with the bulb or capillary, the unit shuts off and
remains off until some of the ice is removed. This
control can be checked by holding two ice cubes
in contact with the bulb clamp as shown in Fig. 31.
The unit should shut off in 30 to 45 seconds. The
cut-in point should be approximately 41° for most
installations, and a differential of 7° should be
maintained.
The cut-in and cut-out temperatures may be adjusted
by turning the knurled knob on the control. When
turning this knob, the differential remains fixed.. To
THERMOSTAT
CAPILLARY
WITHIN RUBBER
HOSE INSULATION
FIG. 31 - METHOD OF CHECKING BUNKER
THERMOSTAT SETTING
adjust the differential, remove the knurled knob and
small holding plate at the top of the control, and
turn the middle adjusting screw.
C A U T I O N : The room ambient temperature must be
above 50 °F for this control to function properly.
WITHOUT PARTITION
The bin thermostat should be clamped to the back
of the bracket as shown in Fig. 32. The clomp is
attached to the bracket at the bottom hole for 240#
bins and at the top hole for 160 and 100# bins. The
thermostat capillary should run up to the top of the
bin liner along the back of the bracket to protect it
from water and ice coming from the crusher.
FIG. 32 - SKETCH SHOWING BRACKET AND
BIN (WITHOUT PARTITION).
26H-57PD 50