Cres Cor R171SUA20E Manual

5925 Heisley Road • Mentor, OH 44060-1833
Series R-171-E
Refrigerated Cabinets FL-2400
Rev. 2 (5/19) Page 1 of 9
Call Toll-free: 877-CRES COR (273-7267) • Fax: [phone] • www.crescor.com
Cabinet model number:
Cabinet serial number:
Authorized Service Agency:
Ph: Fax:
Keep this manual for future reference.
R-171-SUA-10E R-171-SUA-20E
OPERATING and MAINTENANCE INSTRUCTIONS
for Cres Cor Refrigerated Cabinets,
Model R-171-E Series

5925 Heisley Road • Mentor, OH 44060-1833
Series R-171-E
Refrigerated Cabinets FL-2400
Rev. 2 (5/19) Page 2 of 9
Call Toll-free: 877-CRES COR (273-7267) • Fax: [phone] • www.crescor.com
TABLE OF CONTENTS
SUBJECT PAGE
INSTALLATION INSTRUCTIONS .............................................3
OPERATING INSTRUCTIONS
First Time Operation....................................................4
MAINTENANCE INSTRUCTIONS
How to Clean the Unit ..................................................6
Trouble Shooting Guide .................................................7
Replacement Parts .....................................................8
Wiring Diagram .......................................................9
SERVICE POLICY and AGENCY LIST ....................................FL-1400
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK,
DO NOT REMOVE COVER (OR BACK)
NO USER-SERVICEABLE PARTS INSIDE
REPAIR SHOULD BE DONE BY AUTHORIZED SERVICE
PERSONNEL ONLY
RISK OF FIRE OR ELECTRIC SHOCK
DO NOT OPEN
WARNING
REGISTERING YOUR EQUIPMENT AT www.crescor.com/service/register
COMPLETING A SURVEY EARNS AN EXTRA 90-DAY LABOR WARRANTY!
If the equipment will not go into service immediately, please indicate
that on the warranty registration. Scan QR code to register your
equipment today! If you need a QR reader, visit your App Store on
your Smartphone or Tablet.

5925 Heisley Road • Mentor, OH 44060-1833
Series R-171-E
Refrigerated Cabinets FL-2400
Rev. 2 (5/19) Page 3 of 9
Call Toll-free: 877-CRES COR (273-7267) • Fax: [phone] • www.crescor.com
CONTROL PANEL
HOW TO INSTALL THE CABINET:
1. Remove all packing material from inside the
cabinet.
2. Clean and sanitize the interior of the cabinet.
See instructions on how to clean on page 4.
3. INSTALL ALL ANGLES BEFORE UNIT IS
TURNED ON
4. Place unit near correct NEMA receptacle. Allow
adequate clearance in front and rear for airow.
Avoid placing unit near heat sources or equipment
which gives o excessive heat.
HOW TO START:
1. Plug power cord into correct wall outlet.
2. Press power switch “ON”. Switch will illuminate
and temperature control will turn on.
3. Control will display internal cabinet temperature.
4. Pre-chill the cabinet for at least 1 hour before
loading food.
NOTE: DO NOT PUT HOT FOOD INTO
COLD CABINET.
HOW TO OPERATE:
1. The controller will always display actual internal
cabinet temperature.
2. Temperature setpoint has been pre-set at the
factory for optimal operation of the refrigerated
cabinet. No adjustment should be necessary.
3. If any adjustment of temp setpoint is required:
a. To view the setpoint:
1. Push and release SET button.
2. Display will show the value for 5 seconds.
3. Press SET button again or wait 5 seconds to
return to the normal display.
Conguration Base Model # Volts Amps Hertz Phase NEMA
Single Door
R171SUA10E 120 5.0 60 1 5-15P
R171S1828E
R171SUA10E240 240 60 1 6-15P
R171S1828E240
Double Door
R171SUA20E 120 60 1 5-15P
R171S1856E
R171SUA20E240 240 60 1 6-15P
R171S1856E240
INSTALLATION INSTRUCTIONS

5925 Heisley Road • Mentor, OH 44060-1833
Series R-171-E
Refrigerated Cabinets FL-2400
Rev. 2 (5/19) Page 4 of 9
Call Toll-free: 877-CRES COR (273-7267) • Fax: [phone] • www.crescor.com
HOW TO OPERATE (CONT.):
b. To change the setpoint:
1. Push the SET button for more than 2 seconds.
2. °F will begin blinking.
3. Use the ↑ or ↓ buttons to adjust the value.
4. Press the SET button or wait 10 seconds and
the new value will be stored.
4. The control stores the minimum and maximum
temp values seen.
a. To view the MIN temperature:
1. Press the ↓ button.
2. “Lo” will be displayed, followed by the
minimum recorded temperature.
3. Press the ↓ button again or wait 5 seconds to
get back to the normal display.
b. To view the MAX temperature:
1. Press the ↑ button.
2. “Hi” will be displayed, followed by the
maximum recorded temperature.
3. Press the ↑ button again or wait 5 seconds to
return to the normal display.
c. To reset the MIN and MAX recorded
temperatures:
1. Go through one of the above procedures to
display the MIN or MAX temperature.
2. While the MIN or MAX temp is displayed,
press and hold the SET button for more than 3
seconds
3. “rSt” will be blinking
4. The control will go back to the normal display
5. Under normal conditions, the controller is
programmed to run a defrost cycle at optimal time
intervals.
6. If an additional defrost cycle is required, one can be
forced.
a. Press the DEF key for more than 2 seconds.
(This key looks like a melting snowake.)
7. This unit is equipped with 2 dierent light xtures
for convenience and health. They are both
triggered by a door opening event.
a. The LED light is set to illuminate the interior
of the cabinet while the door is in the open
position.
b. The UV light is set to sanitize the air at certain
intervals while the door is closed.
c. Ensure the door gasket is aligned properly so
that the door switch operates correctly.
d. If the door is open for an extended period of
time, display will show door alarm “dA”
CAUTION: Ensure the door switch is operating
properly. The sanitizing bulb is designed to work
ONLY at certain times when door is CLOSED - if
the door switch has failed, it may be on when the
door is open.
WARNING Although the system is completely
enclosed within the shroud in the evaporator
assembly, it DOES still emit low energy ultraviolet
waves. If the evaporator has been disassembled,
take care NOT to look directly at the bulb or have
your skin exposed for an extended period of time.
For greatest germicidal eect, it is recommended to
change the UV bulb every 6 months. Only replace
with genuine Cres Cor part.
8. Locking out the control panel – to have the control
locked out so that only the setpoint/min/max be
viewable:
a. Press and hold the ↑ and ↓ buttons together for
more than 3 seconds
b.“POF” will be displayed.
OPERATING INSTRUCTIONS

5925 Heisley Road • Mentor, OH 44060-1833
Series R-171-E
Refrigerated Cabinets FL-2400
Rev. 2 (5/19) Page 5 of 9
Call Toll-free: 877-CRES COR (273-7267) • Fax: [phone] • www.crescor.com
9. To unlock:
a. Press and hold the ↑ and ↓ buttons together for
more than 3 seconds
b.“Pon” will be displayed.
10. It is not recommended to ever put any hot, warm,
or room temperature product into the refrigerator.
If something needs to be cooled down at a faster
rate than normal (e.g. a large load of cool product
is placed into the refrigerator and needs to become
cold), press and hold the ↑ button for 3 seconds
and the refrigerator will run to below the normal
setpoint for about 40 minutes to aid in pulldown.
a. Yellow snowake will illuminate.
b.NOTE: this process will not initiate if the
cabinet is in a defrost cycle.
TO SHUT UNIT OFF:
1. Press power switch “OFF”
HOW TO REVERSE DOOR SWING FOR
OPPOSITE HAND:
(Single Door Cabinet ONLY)
1. Remove hinge covers with a screwdriver.
2. Open door and lift up to remove door from
cabinet.
3. Unscrew and re-mount the hinges and latch strike
to the opposite sides of the cabinet.
4. Remove the door hinges and the door latch. Turn
hinges and handle over and remount in the same
holes
5. Remove plastic cam from each hinge, rotate cam
180° with “V” groove on cam toward inside of
cabinet. Reseat cam into hinge.
6. Plug all the extra holes with screws.
7. Put door onto cabinet and adjust as necessary.
8. Snap on hinge covers..
1. Unplug cord from wall.
2. Do NOT hose cabinet with water.
3. Do NOT get water into bottom compartment.
4. Do NOT use abrasives or harsh chemicals.
■ Wipe up spills as soon as possible.
■ Clean regularly to avoid heavy dirt build-up.
HOW TO CLEAN THE CABINET:
BEFORE cleaning
the cabinet:
WARNING
Cleaning Hints:
1. Use the mildest cleaning procedure that will do the
job.
2. Always run in the direction of polish lines to avoid
scratching the surface.
3. Use only a soft cloth, sponge, brous brushes,
plastic or stainless steel pads for cleaning and
scouring.
4. Rinse thoroughly with fresh water after every
cleaning operation.
5. Always wipe dry to avoid water marks.
OPERATING INSTRUCTIONS (continued)

5925 Heisley Road • Mentor, OH 44060-1833
Series R-171-E
Refrigerated Cabinets FL-2400
Rev. 2 (5/19) Page 6 of 9
Call Toll-free: 877-CRES COR (273-7267) • Fax: [phone] • www.crescor.com
Soil Cleaner Method
CABINET
Inside
and
Outside
(Stainless Steel)
ROUTINE CLEANING Soap, Ammonia, or mild
*detergent and water.
1. Sponge on with cloth.
2. Rinse with water.
3. Wipe dry.
STUBBORN SPOTS
AND STAINS
Mild abrasive made for
stainless steel.
1. Apply with damp sponge or cloth.
2. Rub lightly.
GREASE, OIL Chemical oven cleaner for
stainless steel.
Follow oven cleaner manufacturer’s
directions.
HARD WATER
SPOTS & SCALE Vinegar 1. Swab or wipe with cloth.
2. Rinse and dry.
*Mild detergents include soaps and non-abrasive cleaners.
MAINTENANCE:
HOW TO CHARGE AND SERVICE THE REFRIGERATION SYSTEM
Note: The refrigerator is shipped fully charged. No changes to the refrigerant system are necessary.
Inspect condenser for dust buildup on an annual basis. If necessary, gently remove blockages with a light
brush or dusting tool.
HOW TO CLEAN THE CABINET (CONT.):
TECHNICAL SPECIFICATIONS
Conguration Refrigerant
Type
Charge
Size (oz)
Design
Pressure
(High Side)
Design
Pressure
(Low Side)
Operating
Pressure
(High Side)
Operating
Pressure
(Low Side)
Single Door
R134A
16 440 180
Double Door 440 180
MAINTENANCE INSTRUCTIONS

5925 Heisley Road • Mentor, OH 44060-1833
Series R-171-E
Refrigerated Cabinets FL-2400
Rev. 2 (5/19) Page 7 of 9
Call Toll-free: 877-CRES COR (273-7267) • Fax: [phone] • www.crescor.com
Failure Probable Cause
1. Power light o, cabinet does
nothing
1a. Power supply/circuit breaker
1b. Power Cord
1c. Power Switch
2. Power light on, evap fan on,
compressor o
2a. Cycling is normal condition
2b. Control/sensor
2c. Compressor/capacitor
2d. Wiring
3. Power light on, evap fan o 3a. Defective evap fan
3b. Wiring
4. Evap fan on, compressor on,
cabinet not cooling
4a. Low charge
4b. Frost buildup in evap coil - activate
manual defrost
4c. Condenser fan
4d. Compressor
5. Noisy compressor
5a. High or low charge
5b. Refrigerant contaminated
5c. Defective compressor
TROUBLE-SHOOTING GUIDE
Unit Condition:
Unit is plugged in. Switch is ON.
NOTES:
1. Thermostat is pre-set at approximately 38°F (3.8°C). Temperature adjustment can only be made by a Service Agency.
2 For replacement of the electrical parts, refer to our list of authorized service centers (FL-1400).
Symbol/Code Function
Green snowake Compressor on
Melting snowake Defrost enabled
Yellow snowake Below setpoint on
°F Measurement unit
dA Door open alarm
P1 Probe failure
HA Maximum temp alarm
LA Minimum temp alarm
MAINTENANCE INSTRUCTIONS
TROUBLE-SHOOTING GUIDE

5925 Heisley Road • Mentor, OH 44060-1833
Series R-171-E
Refrigerated Cabinets FL-2400
Rev. 2 (5/19) Page 8 of 9
Call Toll-free: 877-CRES COR (273-7267) • Fax: [phone] • www.crescor.com
REPLACEMENT PARTS:
Description -10E 120V -20E 120V -10E 240V -20E 240V
Condensor Assembly 0854-053 0854-054 0854-053-240 0854-054-240
Control, Probe 0848-087 0848-087 0848-087 0848-087
Control, Temp 0848-117-01-K 0848-117-02-K 0848-117-01-K 0848-117-02-K
Cord Set 0810-029-06 0810-039-07 0810-029-06 0810-039-07
Door assembly 1221-672 1221-672 1221-672 1221-672
Evaporator Assembly 1416-072 1416-073 1416-072-240 1416-073-240
Evaporator Fan Assy 1416-072-01 1416-072-01 1416-072-240-01 1416-072-240-01
Expansion Valve (tev) 0854-042 0854-042 0854-042 0854-042
Door Heater 0811-332 0811-332 0811-322-240 0811-322-240
Hinge Kit 0519-087-K 0519-087-K 0519-087-K 0519-087-K
Cabinet Light 0820-061 0820-061 0820-061 0820-061
Strain Relief 0818-057 0818-057 0818-057 0818-057
Switch, Power 0808-125 0808-125 0808-125 0808-125
Switch, Door 0808-128 0808-128 0808-128 0808-128
Transformer / / 0769-198 0769-198
REPLACEMENT PARTS
Include all information on nameplate when ordering parts

5925 Heisley Road • Mentor, OH 44060-1833
Series R-171-E
Refrigerated Cabinets FL-2400
Rev. 2 (5/19) Page 9 of 9
Call Toll-free: 877-CRES COR (273-7267) • Fax: [phone] • www.crescor.com
TEMPERATURE CONTROL
CHASSIS GROUND
DOOR SWITCH
WAGO
WAGO
WAGO
7
8
6
5
10
11
913
9
1
2
3
4
11
12
WAGO
16
EVAPORATOR FAN
EVAPORATOR
WAGO
WAGO
WAGO
WAGO
0812-906 CORD #14/3 SJO
CABLE FROM CONTROL COMPARTMENT TO BOTTOM
WAGO
WAGO
TB1 TB2
CONDENSOR UNIT
RECEPTACLE
LED LIGHT
POWER SWITCH
DOOR PERMIMETER HEATER
POWER CORD UV LIGHT
XFMR
13
12
15
14
WIRING DIAGRAM