Condensed Catalog Featuring R410A Products Third Edition

Technical leaflet
Service Thermostats
Introduction
Thermostat 077B is used to control the
temperature in refrigerators, upright and chest
freezers, liquid coolers, bottle coolers and
small commercial refrigeration appliances.
The thermostat can be used as an evaporator
thermostat or a room thermostat.
The thermostats are available with normal
function, fixed cut-in and cut-out temperature,
constant or variable cut-in temperature for
automatic defrost, and with a pushbutton for
semi-automatic defrost.
The thermostats can be supplied with the following
supplementary functions:
n Auxiliary contact
n Changeover contact
n Signal contact
n Series contact
n Reduction of temperature for super-function and
indication of same
All thermostats have normal function, i.e. they cut in
the compressor current circuit on rising temperature.
Features
Temperature control in the interval
–44˚F to +52˚F.
Cut-out temperature interval (difference between
cut-out temperature in position cold and cut-out
position warm) from 41°F to 68°F.
Differentials (differences between cut-in and
cut-out temperature) between 39˚F and 59˚F in
position warm. For thermostats with fixed setting,
from 37˚F.
With automatic defrost the cut-out temperature lies
between –23˚F and –44˚F, the cut-in temperature
between +34˚F and +52˚F.
Other temperature settings can be supplied by
arrangement.
1
/ 4
in or .19 in tabs.
Wide range with various extra functions and
accessories.
Approved by recognized authorities.
Ordering
No. Application Temperatures ˚F Accessories Adaptor Capillary
tube
Warm pos. Cold pos. cutin/cut-out
warm
Knob Button Bracket Cap parts
Signal pos. Defrosting Big Knob Small Push Mounting Seal Small
length
cut-in/cut-out
ft.
1 Refrigerators -35.6/22.1 8.6/-13 • • • • • 4.3 077B7001
Remarks
Code no.
2 Refrigerators with
pushbutton defrost
3 Refrigerators with
automatic defrost
4 Absorption
Refrigerators
5 Ice-cream cabinets
and freezers
without signal
6 Freezers with
active signal
7 Freezers with
passive signal
8 Bottle and liquid
coolers
32/18.5 12.2/-5.8 42.8 • • • • • • 4.3 077B7002
38.3/12.2 38.3/-17.5 • • • • • 5.2 with
auxiliary
switch
38.3/30.2 23/12.2 • • • • • 4.9 with
auxiliary
switch
077B7003
077B7004
18.5/5 -5.8/-26.5 • • • • • 7.5 077B7005
14/1.4 -11.2/-30.1 21.2 • • • • • 7.5 with active
signal
14/1.4 -11.2/-30.1 21.2 • • • • • 7.5 with
passive
signal
077B7006
077B7007
52.7/42.8 30.2/16.7 • • • • • • 6.6 077B7008
76 USCOC.PK.000.C1.22 © Danfoss Inc. 01-07 (USCO)