Equator 375 User Manual
SERVICE MANUAL
(TROUBLE SHOOTING AND REPAIRING TIPS)
Fourth Edition – February 2006
CONSERV REFRIGERATOR
MODELS
375 / 1200 SERIES ( OLD & NEW)
WARRANTY INFORMATION
Your Equator appliance is protected by this warranty under normal,
personal, family or household use (1 Year), and limited commercial use
(90 days) in the USA and Canada.
WARRANTY
Equator Corporation undertakes to the consumer-owner
to repair or, at Equator Corporation’s option, to replace
any part of this product which proves to be defective in
workmanship or material under normal personal, family
or household use, in the USA and Canada, for a period of
one year from the date of original purchase.
For commercial use, the product is warranteed for a
period of 90 days.
During this period, Equator Corporation will provide all
labor and parts necessary to correct such defect, free of
charge, if the appliance has been installed and operated
in accordance with Equator Corporation’s written
instructions with the appliance. Ready access to the
appliance, for service, is the responsibility of the
consumer-owner.
EXCLUSIONS
In no event shall Equator Corporation be liable for
incidental or consequential damages or for damages
resulting from external causes such as abuse, misuse,
incorrect voltage or acts God.
This warranty does not cover service calls which do not
involve defective workmanship or materials covered by
this warranty. Accordingly, diagnosis and repair costs
for a service call which does not involve defective
workmanship or materials will be the responsibility of the
consumer-owner.
Specifically, the following work is not covered under
warranty and does not constitute warranty work:
.
Installation - improper hook-up or leveling
.
Maintenance - cleaning of air and/or water filter
.
Damage - replacing broken door handle
WARRANTYSERVICE
This warranty is given by:
Equator Corporation,
Equator Plaza,
2801 W. Sam Houston Pkwy.N.,
Houston, TX 77043-1611.
Service under this warranty must be obtained by the
following steps, in order:
Call an Equator Corporation Authorized Service Agent
(obtain number of nearest agent from your dealer or by
calling Equator Service at
1-800-776-3538). Under normal circumstances,
Service will be provided during regular business hours
(9:00 a.m. to 5:00 p.m. weekdays).
GENERAL
Since it is responsibility of the consumer-owner to
establish the warranty period by verifying the original
purchase date, Equator Corporation recommends that
a receipt, delivery slip or some other appropriate
payment record be kept for that purpose.
Remember to send in your Warranty Registration Card
so that a proof of your purchase exists with Equator.
This warranty gives you specific legal rights, and
you may also have other rights which vary from State to
State.
Corporate Office
EQUATOR CORPORATION
Equator Plaza
2801 W. Sam Houston Pkwy. N.
Houston, TX 77043-1611
Tel: 713-464-3422 - Fax: 713-464-2151
Tel: 800-935-1955
Most work is covered. The defining factor is, has the
machine malfunctioned (Equator is responsible) or has
the customer omitted or done something to cause
machine to malfunction (customer is responsible).
Some States do not allow the exclusion or limitation of
incidental or consequential damages, so the above
limitation or exclusion may not apply to you.
1.
2.
1.1 Trouble-Shooting Chart
Disturbance Cause Trouble-Shooting Remedy
Unit does not
refrigerate or freeze,
compressor does not
operate.
Wall socket is dead. Check installation. Install new fuse if
necessary. Inform user.
Mains cable is
defective.
See section 1.2: Troubleshooting in the electrical
circuit.
Repair or replace socket
or mains cable.
Thermostat is
defective.
Defective winding in
compressor.
Starting device is
defective.
Wiring for starting
device is incorrectly
installed.
No-Frost Timer is set in
defrosting position.
Unit does not
refrigerate or freeze,
compressor tries to
start but fails to
operate.
Insufficient mains
voltage.
Wrong or defective
starting device.
Wiring for starting
device is incorrectly
installed.
Replace thermostat.
See section 1.6: Troubleshooting for Electrical
Faults in the Compressor.
See section 1.2: trouble
shooting in the Electric
circuit.
Check mains voltage. Inform user that
See section 1.2:
Troubleshooting in the
Electric Circuit.
Replace compressor.
Replace starting device.
Correct in accordance
with wiring diagram in
the spare parts list.
Turn timer knob past
defrosting.
installation should be
repaired by an electrician.
Install new starting
device.
Correct according to
wiring diagram in the
spare parts list.
To be continued on
the next page
Winding fault in
compressor.
Condensing pressure
too high (obstruction
capillary tube).
See section 1.5:
Troubleshooting for
Electrical Faults in the
compressor.
Open system and location
obstruction by blowing
N2 through system. See
Section 2.1: Opening the
Refrigerating System with
R600a for Repairs.
Replace compressor.
Remove filter drier and
cut 5 cm of the capillary
tube. Blow through the
system thoroughly before
installing new filter.
3.
Dis turbance Caus e Trouble -Shooting Re me dy
Oil present in system
after horizontal
transport.
Locked rotor (fault in
compressor).
Ambient temperature
very low. O il in
compressor too cold,
possibly in connection
with undervoltage.
Question user about mode
of transportation and time
interval between
ins ta llatio n a nd s ta rt- up .
Check that compressor
hums and picks up to tal
starting current. Open
system and blow N2
through system.
Measure ambient
temperature. Measure
voltage.
Let unit stand for several
hours at warm
temperature and try to
start again. Ifcompressor
does not start, open the
system and blow through
with N2.
If system (filter) is not
blocked, replace
compressor.
Find a better location for
unit. C ondenser can be
insulated if necessary, but
DON’T FORGET to
remove again if ambient
temperature increases.
Compressor tries to
start but does not
always succeed on
firs t a tte mpt.
Refrigerate and/or
freeze normally.
Compressor tries to
start but does not
succeed on first
attempt.
Compressor runs
co ntinuously. Unit
refrigerates/freezes
normally or to o much.
To be continued on
the next page.
Canbe normal.
Ventilation is perhaps
ins uffic ient.
S ta nd st ill time for
compressor is too
short.
Thermostat phial is
incorrectly installed.
Ice formation around
thermostat phial.
Thermostat set too
lo w.
Ice formation in phial
tube.
Measure the temperature
of compressor housing
(max. 110°C) and filter
(max. 70°C).
Check for snug fit of
doors. Time standstill
period for compressor.
Check location of phial. Correct the fault. Cutout
Check for snug fit of
doors
Turn thermostat knob
counter-clockwise.
Find a better location for
the unit.arrange ways for
a better ventistat.
If standstill time is too
short, replace thermostat.
temperature can be raised
by giving the phial a
greater surface contact
with the evaporator.
Inform user to defrost
unit.
If compressor stops,
inform user about function
of thermostat.
Defrost unit. Remo ve
thermostat phial, dry
thoro ughly and replace.
Repeat until the phial is
dry. Seal with putty.
4.
Disturbance Cause Troubleshooting Remedy
Defective thermostat. 1.Turn thermostat knob to
zero. 2.Compressor
continues to run.
Compressor starts
normally but stops
Extremely high
voltage.
3.Dismount brown wire.
4.Compressor continues
to run. 5.Compressor
stops.
Measure voltage. Inform user.
4.Check internal wiring
for short circuit (fastfreeze switch). 5.Replace
thermostat.
again.
Unit
refrigerates/freezes
too much, normally,
too little or not at all.
Compressor may run
continuously.
High ambient
temperature. Poor
ventilation.
Can be normal. Check temperature in
Leakage in system
with resulting loss of
refrigerant.
Measure temperature and
check ventilation around
compressor.
unit.
Symptom: Evaporator not
wholly utilized. Localize
leak with electronic leak
detector-first at soldering
joints, pipes and
compressor in motor
Improve ventilation.
Inform user.
After repairing leakage,
repair system as in the
case of ice blockage in
capillary tube. See
relevant section in chart.
compartment. Next in the
evaporator and condenser.
When leak is localized,
cover area with a layer of
Leak-Tec or liquid soap.
Bubbles will appear at the
exact site of leakage.
Check pressure side with
compressor running and
suction side when
pressure ise equalized. If
refrigerant pressure is
insufficient for leak
detection, install a service
valve on charging pipe
and refrigerant and N
(approximately
10kg/cm
). Repeat leak
2
detection.
No-Frost Fan is not operating. Electric connections.
Check and see if blade is
fixed properly on shaft.
2
Blade is fixed or
replaced.
5.
Ditrubance Cause Trouble-shooting Remedy
No-Frost
No-Frost
No-Frost Evaporator blocked
by ice.
Check if blade is locked
mechanically.
Check if blade is fixed
correctly on shaft.
Check id timer is set in
defrosting position.
Check for snug fit of doors,
cable or tube wall ducts.
Check if timer is under
tension when set at
defrosting (remember that
timer is only under is under
tension when freezer
thermostat is cut in). Check
bimetallic thermostat and
thermal fuse. Bimetallic
thermostat can only be
checked when the
evaporator is cold (colder
than 5°C). Check if heating
element is under tension.
Furthermore, when the
doors have been open for a
long time, the evaporator
may be blocked by ice.Even
though the compressor runs
continuously, up to 10
hours will be elapsed before
the next defrosting takes
place. There will be no
cooling in this period.
Fittings for fan or air
guiding duct are adjusted
or replaced.
Blade must turn so that
air flow only can be
sucked in and blown out
in the right places. Blade
must cover 10mm of
shaft end, on two-step fan
14mm.
Turn timer forward.
Repair leakage. Check
electric connections and
contact unit of timer.
Refrigerates/freezes
too little or not at all.
Compressor runs
continuously.
Capillary tube
completely or
partially blocked
(material from filter
in capillary tube
opening). Capillary
tube is inserted so far
up in the filter that it
touches the filter net.
Mount valve on charging
pipe. Measure suction
pressure. Check pressure
equalizing time. Cut
capillary tube
approximately 5cm after
filter. Blow N2 through
charging pipe and check
flow through capillary tube
See section 4.1 and 4.1.1
6.
Disturbance Cause Trouble-shooting Remedy
Ice blockage in
capillary tube.
Heat injection area on
evaporator with cloth
with hot water. If
refrigerant now can be
heardtoflowmore
quickly through the
system, ice blockage in
capillary tube is indicated.
Alternatively, stop
compressor and let
evaporator defrost and
start compressor again. In
case of ice blockage, frost
formation on the
evaporator will increase
initially and then return to
its original level.
Blow N2 through system.
Install outsize service
filter. Ensure careful
evacuation. Start
compressor. Stop when
warm. Evacuate system
again. With heavy
contamination of system
it is necessary to repeat
this process several
times. Filter can be
replaced again.
No or very little
compressor capacity.
Capillary tube
mounted incorrectly
at injection site (rollbond evaporator).
Mount a service valve on
charging pipe and check
suction pressure. Pressure
conditions indicate no or
very little compressor
capacity. Test
compressor.
Symptoms resemble those
of loss of refrigerant.
If volumetric check
indicates insufficient
compressor capacity,
replace compressor. Note
that defects in the
compressor can be caused
by complete or partial
blockage at another point
in the system. This
situation must be
remedied before a new
compressor is installed.
Replace refrigerating
evaporator.
Insufficient
refrigerating/freezing.
Thermostat is set too
high.
Turn thermostat knob
clockwise. Check to
ensure that phial is
correctly installed.
Replace thermostat.
7.
Dis turbance Caus e Trouble -shooting Re me dy
Compressor runs
co ntinuously.
Unit has recently been
fille d wit h la rge
quantities of food.
Built-in thermometer
is defective. User’s
thermometer is
defective.
Ambient temperature
is b elo w 0 °C .
refrigerant has
collected in the
condenser.
Ambient temperature
is to o high, p os sib ly
because unit is too
close to a heat
source, o r ventilation
is ins uffic ient.
Doors do not fit
snugly.
Question user about use
of unit immediately prior
to s ervic e c all.
Check for correct
thermometer readings.
Symptoms resemble those
of partially blocked
ca pilla ry tub e. Re co rd
ambient temperature.
Compare exact
temperature with user’s
observations. Check air
circulation.
Insert paper between
door and frame and
closed door. If paper can
be pulled out without
resistance, the door does
not fit tightly enough.
Inform user about the
problems caused by this.
Instruct user about use of
fast-freeze switch.
Replace built-in
thermometer if necessary.
Findamoresuitable
lo ca tio n fo r the unit, w ith
higher ambient
temperature.
Arrange for better
lo ca tio n o f unit a nd /o r
better ventilation.
Fold double-sided tape to
suita ble thic kne ss a nd
press in between gasket
and door. Pull gently in
gasket at relevant area.
Rapid ice formation
on freezer shelves.
Insufficie nt
refrigeration.
Automatic defrosting
does not function.
Possibly due to ice
forma tio n on
evaporator.
As above. As above. As above.
User wishes to lower
temperature in unit.
The cut-in
temperature of the
thermostat is too low.
The thermostat phial
has insufficient surface
contact with the
evaporator.
Measure the exact
temperature.
Measure temperature at
phial. Temperature here
must not be lower than the
cut-out temperature. See
Section 2.
The cut-o ut temperature
ca n b e lo we re d by giving
the thermostat phial a
reduced surface contact
with the aluminum
evaporator (refer to
automatic defrosting
section).
Increase the cut-in
temperature of the
thermostat b y giving the
phial a greater surface
contact with the
evaporator. If this does
not help, replace the
thermostat.
8.
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