background image

Component Testing

To avoid risk electrical shock, personal injury, or death,

always disconnect electrical power source to the freezer

before attempting to service, unless test procedures require

power to be connected. When removing any wiring from terminals they must be replaced on the same terminals.

Ensure all ground wires are connected before certifying unit as repaired and/or operational.

WARNING

!

10

16022217 Rev. 0

©2003 Maytag Appliances Company

3. If it has been determined that there is proper contact

between the thermistor and the evaporator plate, the

voltage at the thermistor terminals can be read. The

voltage can be read while the unit is running by

attaching test leads to thermistor terminals at the

electronic control. The temperature to switch into the

harvest cycle is 11.0 °F and the corresponding

voltage is 3.0-3.1 V. The temperature to switch into

the production cycle is 45 °F and the corresponding

voltage is 1.9-2.0 V. Slight variations in actual

measurements can occur due to input voltage

variations.

Note:

The temperature and pressure readings must  be

taken with unit on and water flowing over the

evaporator plate (in the production cycle). Use

gage pressure readings from the compressor’s

process tube (low side) access valve.

During production cycle, low side pressures will vary

from 125 psi to 3 psi, depending at what point

measurements are taken. High side pressures can range

from 425 psi to 25 psi also depending at what point

measurements are taken.

In evaluating this system, the best point to determine if

pressures are correct is at the end of the production

cycle. This is the point where there is a thick slab formed

on the evaporator and the evaporator thermostat is near

cut-out temperature.

If low side pressure is below pressure, check for the

following:

1. A system leak

2. Capillary tube is restricted

3. Insufficient compressor

If low side pressure is above pressure, check for the

following:

1. Restricted air flow

2. Dirty condenser coil

3. Leaking or energized hot gas valve

4. Overcharged system

5. Low side leak

Recharging

Recharging of the unit should be done only after

diagnosing and repairing the system (see Sealed

System introduction).

 Be sure to flush the system with

dry nitrogen gas and evacuate to 50 microns before re-

charging.

The method for recharging the unit is by weight

using vapor refrigerant

. Using manifold gauge setup,

hook up charge hoses to the access valve on the

compressor’s process tube. If any access valve was

attached to the high side process tube, remove it and

seal the tube by brazing before charging. Charge the unit

to 5.0 oz (0.313 lbs.) of R-134A.

After recharge, check pressures. Refer to Table A for

corresponding temperatures and pressures. If pressures

or temperatures are incorrect, check the sealed system,

recover the charge, repair, evacuate, and then recharge.

NOTE

: It is not uncommon to have some condensation

or a slight frost on the suction line. This may

occur towards the end of the production cycle.

Liquid refrigerant is not getting into the

compressor if the unit was charged properly. It is

important that the insulation remains on the

suction line and the capillary tube together after

any repair and that it is sealed at both ends.

Hot Gas Valve

The hot gas valve is used to bypass the capillary tube

and send warm gas to the evaporator when opened

during the harvest cycle. The valve is actuated by a

solenoid that opens the valve when energized and closes

when de-energized. The valve seats using gravity so the

valve must remain vertical to fully close.

A faulty hot gas valve will result in long ice production

cycles and higher than normal low side pressures. The

valve usually fails by being stuck in the open or closed

position, or by not fully seating in the closed position

causing the valve to leak-by. A contaminated system or

damage to the valve body will cause any of these

failures. Care in keeping the system clean, handling the

valve, keeping the valve cool during brazing, and

evacuation of the system before charging must be done

to prevent damage and eventual failure of the valve.

A quick way to check the valve to see that it opens and

closes freely (with the system still sealed) is to

repeatedly energize and de-energize the solenoid and

listen for the valve opening and closing. You should be

able to hear a distinct “click” of the valve opening and

closing. If you can not hear this, then the valve is stuck

and will need to be replaced. The solenoid coil itself can

be check by measuring resistance across the electrical

terminals. A resistance reading of 380-390 ohms should

be found in a good solenoid coil.

Summary of Contents for JIM1550ARB

Page 1: ...manual includes but is not limited to the following Jenn Air JIM1550ARB JIM1550ARW JIM1550ARS JIM1550ACX Service This manual is to be used by qualified appliance technicians only Maytag does not assu...

Page 2: ...ING REPAIRS WARNING To avoid risk of severe personal injury or death disconnect power before working servicing on appliance to avoid electrical shock To locate an authorized servicer please consult yo...

Page 3: ...tter Transformer 13 Grid Cutter 13 Reservoir 13 Circulation Pump 13 Troubleshooting 14 17 Disassembly Procedures Hot Gas Valve Removal 18 Hot Gas Valve Installation 18 Replacing the Evaporator 18 Comp...

Page 4: ...identifications of individual units state complete serial number model and type This information is found on the serial plate located on front upper right hand corner of foodliner or on some models e...

Page 5: ...loaded weight of the unit Refer toAppendix A owner s guide for additional information Electrical Requirements 115 VAC 60 Hz single phase power is needed Use outlet with a 15 amp delayed action fuse or...

Page 6: ...ble tubing or poor ice production will result If installing a standoff gravity drain use Illustration below for location Standpipe can be up to 3 inches high above the floor Route tubing from ice make...

Page 7: ...d for the first 35 minutes into the production cycle If during any production cycle or harvest cycle the selector switch is put into the CLEAN position any cycle in process will be immediately termina...

Page 8: ...ch is moved from the CLEAN position all loads except the drain solenoid will de energize this includes the OFF position The drain solenoid will energize for 75 seconds and then de energize The unit wi...

Page 9: ...in the system at the evaporator low side suction return line or accumulator If a leak is found in any of these areas moisture has probably entered the system The compressor drier and hot gas valve wil...

Page 10: ...m with dry nitrogen gas and evacuate to 50 microns before re charging The method for recharging the unit is by weight using vapor refrigerant Using manifold gauge setup hook up charge hoses to the acc...

Page 11: ...essor The compressor is the heart of the refrigeration system It also however relies on other parts of the system to function Make certain that the other parts of the system are correctly functioning...

Page 12: ...e flow rate of the reservoir water line Using a stopwatch or a watch with a second hand see what amount of time it takes to fill up a one quart container The time should be 60 seconds to get the 25 gp...

Page 13: ...d side of the transformer and reading the 12V side using a multimeter If no readout is found or readout is below 10VAC replace the transformer Grid Cutter The grid cutter is used to cut cubes from the...

Page 14: ...for proper operation Distributor tube is restricted or not installed correctly See CLEANING YOUR ICE MACHINE section for cleaning the unit for proper operation Grid cutter is unplugged Plug in the gr...

Page 15: ...o kinks or restrictions in the drain lines If using a drain pump check the inlet screen discharge line and vent line for any build or restrictions Leaking drain valve See CLEANING YOUR ICE MACHINE sec...

Page 16: ...t for proper operation Build up of deposits on evaporator plate See CLEANING YOUR ICE MACHINE section for cleaning the unit for proper operation Inadequate drain system Restriction in drain lines will...

Page 17: ...o side and front to rear Room temperature is too cold Move the unit to an area where temperature is above 55 deg F The selector switch is not in the ON position Set the rocker switch on the grille of...

Page 18: ...itrogen gas and a leak detection system 9 Flush the system and recharge 10 Reassemble reversing steps 1 through 10 Replacing the Evaporator 1 Disconnect power water line and drain line If a drain pump...

Page 19: ...ll need to disconnect the three wires from the old PTC starter and then connect the new one 12 Un braze and remove the capillary tube from the drier assembly 13 Un braze the tube from the hot gas valv...

Page 20: ...r to the reservoir and observing for any leaks from the tubing connections or the valve itself Water Valve Removal 1 Disconnect power water line and drain line 2 Remove the access panel and rear panel...

Page 21: ...the hot gas valve solenoid coil by removing the spring retainer rotating the coil 90 degrees and then lifting up 7 Take out the two screws that secure the top of the electrical bracket located in the...

Page 22: ...1 Disconnect power to the icemaker 2 From inside the unit remove the escutcheon panel 3 Remove the grid cutter 4 Remove the ice deflector 5 Remove the reservoir 6 Unplug the circulation pump at the re...

Page 23: ...23 BLACK RIBBED NEUTRAL OV LD COMPRESSOR GRID CUTTER TRANSFORMER THERMISTOR THERMISTOR EVAPORATOR THERMISTOR THERMISTOR SOLENOID BIN CLEAN GRID SOLENOID SOLENOID DRAIN WATER HOT GAS CUTTER FAN CONDEN...

Page 24: ...2003 Maytag Appliances Company 16022217 Rev 0 A 1 Appendix A...

Page 25: ...Introduction 2 Safety 3 Installation 4 9 Operation 10 Care and Cleaning 11 12 Before Calling for Service 13 18 Warranty 20 Guide du Propri taire 21 Gu a del Propietario 41 OWNER S GUIDE 41007621 4100...

Page 26: ...need future assistance with your ice maker a complete model and serial number recorded in the spaces below will be extremely helpful These numbers are found on the data plate inside on the lower front...

Page 27: ...apors and liquids Children should not climb hang or stand on or in this refrigeration product Read and follow manufacturer s warnings on ice machine cleaner products Personal injury can result when us...

Page 28: ...rs Ideal Ambient Temperature Range Built In 55 80 F NOTE Ice maker will not perform correctly in ambient temperatures less than 55 F Cabinet Clearance The ice maker may be enclosed on the sides rear a...

Page 29: ...nstallation WARNING The ice maker should remain upright at least 30 minutes prior to plugging it in CAUTION Level the Ice Maker Using a carpenter s level check to be sure the ice maker is level from s...

Page 30: ...drain is not accessible NOTE Avoid kinks and check for proper water drainage after ice maker installation OBSERVE AND FOLLOW ALL LOCAL CODES WHEN INSTALLING ICE MAKER Failure to use adequate drainage...

Page 31: ...a shut off valve between the ice maker and the water supply The shut off should be a drilled saddle valve Do not use a self tapping valve The valve should be installed in a vertical water pipe NOTE If...

Page 32: ...ness maximum 1 Turn off the ice maker and disconnect the power 2 Remove 1 8 set screw A from the top hinge Remove the door off of the lower hinge noting washer location 3 Remove the door seal B to exp...

Page 33: ...m wood panel and tighten 6 Reinstall the door seal by pressing it into the door channel Making certain the corners are fully inserted 7 Install the door back on to the ice maker using the supplied pla...

Page 34: ...electronic control switches to the harvest cycle to harvest the ice slab During the harvest cycle the ice slab falls from the evaporator to the ice grid cutter Here the ice slab is cut into 3 4 square...

Page 35: ...r panel and close door 7 Switch selector switch on the grill of the machine to the CLEAN position Three quarts of water will automatically be added to ice maker cleaner 8 The total cleaning time will...

Page 36: ...eansers bleach or cleaners containing bleach These products can scratch and erode the paint finish DO NOT wax plastic or vinyl parts Use a soft cloth or sponge Always wipe with the grain of the stainl...

Page 37: ...proper ice quality production and unit life 6 If ice maker is to be left unattended for a month or longer turn off its water supply switch the control to OFF and disconnect the power supply Remove an...

Page 38: ...cycle can take up to 11 2 hours Initial startup cycles can be longer The selector switch is in the OFF or CLEAN position No water in the reservoir Distributor tube is restricted Build up of deposits o...

Page 39: ...discharge line and vent line for any buildup or restrictions Remove the front cover panel and plug the grid cutter into the receptacle on the side of the liner Ice is slowly melting on the ice bin an...

Page 40: ...nit to make sure there are no restrictions or kinks in the line Check all filters to make sure they are not restricted or plugged Make sure that the reservoir drain plug is installed properly Check th...

Page 41: ...and front to rear Set the rocker switch on the grille of the ice machine to the ON position Remove the front cover panel and plug the grid cutter into the receptacle on the side of the liner It can ta...

Page 42: ...nks or restrictions in the drain lines If necessary consult a qualified plumber Foreign material is restricting or blocking the ice bin drain located at the right rear corner of the ice bin The drain...

Page 43: ...19 Notes 41007621 JA Ice Maker ENG 4 28 03 2 18 PM Page 19...

Page 44: ...vicer 6 Consequential or incidental damages sustained by any person as a result of any breach of these warranties Some states do not allow the exclusion or limitation of consequential or incidental da...

Reviews: