ACR-26S, Air Curtain Refrigerator
Service and Installation Manual
Please read this manual completely before attempting to install this equipment! Notify carrier of damage!
Inspect all components immediately.
Important Information
Read Before Use
Please Save These Instructions!
February 2013
Air Curtain Refrigerator Service and Installation Manual
Important Warning And Safety Information
WARNING
Read This Manual Thoroughly Before Operating, Installing, Or Performing Maintenance On The Equipment.
WARNING
Failure To Follow Instructions In This Manual Can Cause Property Damage, Injury Or Death.
WARNING
Do Not Store Or Use Gasoline Or Other Flammable Vapors Or Liquids In The Vicinity Of This Or Any Other
Appliance.
WARNING
Unless All Cover And Access Panels Are In Place And Properly Secured, Do Not Operate This Equipment.
WARNING
This Appliance Is Not Intended For Use By Persons Who Lack Experience Or Knowledge, Unless They Have Been
Given Supervision Or Instruction Concerning Use Of The Appliance By A Person Responsible For Their Safety.
WARNING
This Appliance Is Not To Be Played With.
Warning
Do Not Clean With Water Jet.
WARNING
Do Not Use Electrical Appliances Inside The Food Storage Compartment Of This Appliance.
CAUTION
Observe the following:
2
•
Minimum clearances must be maintained from all walls and combustible materials.
•
Keep the equipment area free and clear of combustible material.
•
Allow adequate clearance for air openings.
•
Operate equipment only on the type of electricity indicated on the specification plate.
•
Unplug the unit before making any repairs.
•
Retain this manual for future reference.
For customer service, call (800) 733-8829 or (800) 733-8948, Fax (989) 773-3210, www.delfield.com
Air Curtain Refrigerator Service and Installation Manual
Contents
Receiving And Inspecting . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Serial Number Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Warranty Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Regulatory Certifications . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
ERC2 Control Instructions
Programming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-10
Error Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Replacement Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14-15
Receiving and Inspecting the Equipment
Even though most equipment is shipped crated, care should be
taken during unloading so the equipment is not damaged while
being moved into the building.
1. Visually inspect the exterior of the package an skid or
container. Any damage should be noted and reported to the
delivering carrier immediately.
2. If damaged, open and inspect the contents with the carrier.
3. In the event that the exterior is not damaged, yet upon
opening, there is concealed damage to the equipment notify
the carrier. Notification should be made verbally as well as in
written form.
4. Request an inspection of the concealed equipment. This
should be done within 10 days from receipt of the equipment.
5. Check the lower portion of the unit to be sure legs or casters
are not bent.
6. Also open the compressor compartment housing and visually
inspect the refrigeration package. Be sure lines are secure
and base is still intact.
7. Freight carriers can supply the necessary forms upon
request.
8. Retain all crating material until an inspection has been made
or waived.
Uncrating the Equipment
First cut and remove the banding from around the crate. Remove
the front of the crate material, use of some tools will be required.
If the unit is on legs remove the top of the crate as well and lift
the unit off the skid. If the unit is on casters it can be "rolled" off
the skid.
For customer service, call (800) 733-8829 or (800) 733-8948, Fax (989) 773-3210, www.delfield.com
3
Air Curtain Refrigerator Service and Installation Manual
Serial Number Information
To view the serial number of the ACR-26S refrigerator, open the
door of the unit. The serial number is located on the inside back
wall in the top left corner of the unit.
Always have the serial number of your unit available when calling
for parts or service. A complete list of authorized Delfield parts
depots can be found on www.delfield.com.
©2013 The Delfield Company. All rights reserved. Reproduction without
written permission is prohibited.
Warranty Information
Visit http://www.delfield.com/minisite/service/warranty_info to:
• Register your product for warranty.
• Verify warranty information.
• View and download a copy of your warranty.
Regulatory Certifications
All models are certified by:
National Sanitation Foundation (NSF)
Underwriters Laboratories (UL)
Underwriters Laboratories of Canada (ULC)
4
For customer service, call (800) 733-8829 or (800) 733-8948, Fax (989) 773-3210, www.delfield.com
Air Curtain Refrigerator Service and Installation Manual
Specifications
Model ACR-26S
V/Hz/Ph
Amps
Volume
18"x26" Tray
Capacity
H.P.
404A
Charge
BTU/Hr
Door Closed
BTU/Hr
System Cap.
115/60/1
14.0
12.5ft3
10
1/2
32oz
504
3300
Ship
Weight
592lbs/
269kg
NEMA
Plug
5-20P
Installation
Location
Electrical connection
Leveling
Reversing the door hinging
The ACR-26S is intended for indoor use only. Be sure the
location chosen has a floor strong enough to support the
total weight of the cabinet and contents. Reinforce the floor if
necessary to provide for maximum loading.
Avoid placing unit under air conditioning vents or other ventilation
fans that may affect the air curtain when door is open.
A level cabinet looks better and will perform better because the
doors will line up with the door frames properly, the cabinet will
not be subject to undue strain, and the contents of the cabinet will
not move around on the shelves. Use a level to make sure the unit
is level from front to back and side to side.
Stabilizing
The ACR-26S is supplied with casters for your convenience,
ease of cleaning underneath and for mobility. Two locking
casters allow you to stabilize the unit if you are loading or
unloading product.
Refer to the amperage data shown in this manual, the serial tag
and your local code or the National Electrical Code for proper
wire sizes. All case wiring is labeled with the required voltagebe sure it is connected to the proper power source. A protected
circuit of the correct voltage and amperage must be run for
connection of the line cord or permanent connection to the unit.
The following steps will allow you to reverse the side the door
hinges on.
1. Open the door to 180° open position.
2. Lift up door and remove door from hinges in fully open
position.
3. Remove pins from hinges.
4. Remove both hinges and relocate on the opposite side.
Tighten hinges.
5. Unscrew the lock stop tab from the top of door and mount
to the bottom in the holes provided.
6. Invert the door and mount it into the hinges in the fully
open position.
Operation
When the door is open, Delfield’s patented air curtain design
directs cold air across the cabinet opening, keeping hot air out
and cold air in for two hours at a time. The unit will maintain
a maximum of 45°F box temperature at 70°F ambient with the
door open during peak production times, quickly returning to a
normal 36°F. With the door closed, a maximum 40°F at 100°F
ambient is maintained (normal operation) while running only
15% in an 85° room.
Don’t pack the interior of the refrigerator so full that air cannot
circulate. When operating open, keep shelves filled with trays
and trays pushed all the way in so that they do not disrupt the
air curtain air flow.
Open the ACR’s door completely and the magnetic strip built in
to the frame allows the door to remain open while loading or
unloading.
The power switch should be turned to the OFF position and the
power cord disconnected whenever performing maintenance
functions or cleaning the refrigerated cabinet area.
For customer service, call (800) 733-8829 or (800) 733-8948, Fax (989) 773-3210, www.delfield.com
5
Air Curtain Refrigerator Service and Installation Manual
Maintenance
Door Gasket Maintenance
Door gaskets require regular cleaning to prevent mold and
mildew build up and also to retain the elasticity of the gasket.
Gasket cleaning can be done with the use of warm soapy water.
Avoid full strength cleaning products on gaskets as this can
cause them to become brittle and crack. Never use sharp tools
or knives to scrape or clean the gasket. Gaskets can be easily
replaced and do not require the use of tools or an authorized
service person. The gaskets are “Dart” style and can be pulled
out of the groove in the door and new gaskets can be “pressed”
back into place.
Caster Maintenance
Wipe casters with a damp cloth monthly to prevent corrosion.
The power switch must be turned to OFF and the
unit disconnected from the power source whenever
performing service, maintenance functions or cleaning
the refrigerated area.
Refrigerators and Freezers
The interior and exterior can be cleaned using soap and warm
water. If this isn’t sufficient, try ammonia and water or a
nonabrasive liquid cleaner. When cleaning the exterior, always
rub with the “grain” of the stainless steel to avoid marring the
finish. Do not use an abrasive cleaner because it will scratch the
stainless steel and can damage the breaker strips and gaskets.
Stainless Steel Care and Cleaning
To prevent discoloration or rust on stainless steel several
important steps need to be taken. First, we need to understand
the properties of stainless steel. Stainless steel contains 70- 80%
iron, which will rust. It also contains 12-30% chromium, which
forms an invisible passive film over the steel’s surface, which
acts as a shield against corrosion. As long as the protective
layer is intact, the metal is still stainless. If the film is broken
or contaminated, outside elements can begin to breakdown the
steel and begin to form discoloration or rust. Proper cleaning
of stainless steel requires soft cloths or plastic scouring pads.
NEVER USE STEEL PADS, WIRE BRUSHES OR SCRAPERS!
Cleaning solutions need to be alkaline based or non-chloride
cleaners. Any cleaner containing chlorides will damage
the protective film of the stainless steel. Chlorides are also
commonly found in hard water, salts, and household and
industrial cleaners. If cleaners containing chlorides are used be
sure to rinse repeatedly and dry thoroughly. Routine cleaning
of stainless steel can be done with soap and water. Extreme
stains or grease should be cleaned with a non-abrasive cleaner
and plastic scrub pad. Always rub with the grain of the steel.
There are stainless steel cleaners available which can restore
and preserve the finish of the steels protective layer. Early signs
6
of stainless steel breakdown are small pits and cracks. If this
has begun, clean thoroughly and start to apply stainless steel
cleaners in attempt to restore the passivity of the steel.
Never use an acid based cleaning solution! Many
food products have an acidic content, which can
deteriorate the finish. Be sure to clean the stainless
steel surfaces of ALL food products. Common items
include, tomatoes, peppers and other vegetables.
Cleaning the Condenser Coil
In order to maintain proper refrigeration performance, the
condenser fins must be cleaned of dust, dirt and grease
regularly. It is recommended that this be done at least every
three months. If conditions are such that the condenser is totally
blocked in three months, the frequency of cleaning should be
increased. Clean the condenser with a vacuum cleaner or stiff
brush. If extremely dirty, a commercially available condenser
cleaner may be required.
Failure to maintain a clean condenser coil can initially cause high
temperatures and excessive run times. Continuous operation
with a dirty or clogged condenser coil can result in compressor
failure. Neglecting the condenser coil cleaning procedures will
void any warranties associated with the compressor and cost to
replace the compressor.
Never use a high-pressure water wash for this
cleaning procedure as water can damage the electrical
components located near or at the condenser coil.
Doors/Hinges
Over time and with heavy use doors the hinges may become
loose. If this happens tighten the screws that mount the hinge
brackets to the frame of the unit. Loose or sagging doors can
cause the hinges to pull out of the frame, which may damage
both the doors and the hinges. In some cases this may require
qualified service agents or maintenance personnel to perform
repairs.
Preventing blower coil corrosion
To help prevent corrosion of the blower coil, store all acidic
items, such as pickles and tomatoes, in sealable containers.
Immediately wipe up all spills.
Continuous opening and closing of the doors will hamper the
unit’s ability to maintain optimum refrigeration temperature. Top
section is not intended for overnight storage.
Over shelves and other items mounted to the top of the counters
should never be installed in the field due to the potential damage
to the refrigeration system.
For customer service, call (800) 733-8829 or (800) 733-8948, Fax (989) 773-3210, www.delfield.com
Air Curtain Refrigerator Service and Installation Manual
ERC2 Control Instructions
ERC2 Control Instructions
Programming
The ERC 2 control initially powers up displaying 12:00 AM otherwise it will show the last configured
selection (time or temperature). If a power outage occurs during normal operation, the control will
maintain the correct time-of-day using a capacitor (batteries not required). The time will be maintained
for up to 100 hours when the capacitor is fully charged,
To initiate a Manual Defrost, press and hold the MAN DEF key for 3 seconds.
There are two levels of programming in the ERC 2. The first level of security will enable the user to set
two parameters: Time-of-day (CLoC) and Setpoint temperature (SEt). The other level allows access to
the other parameters.
Three buttons are used for the programming: SET, UP and DOWN
Fig. 2 – Display Lay-out
Follow these steps to change time-of-day and setpoint temperature (First Level):
Step 1
Press and hold set for 5 seconds. The display will show CLoC
Step 2
Press SET again to change time-of day
Step 3
or
Press UP or DOWN until the correct time-of-day is displayed
Step 4
Press SET to accept the new time
Step 5
Press DOWN to go to the next parameter – Setpoint temperature – SEt (cut
out)
Press SET to change the setpoint temperature
Step 6
Step 7
Step 8
Press UP or DOWN to go to the desired setpoint. The range is -40 to 60°F or 40 to 16°C . ACR-26S is set at 34-35°F or 1-2°C
Press SET to accept the change
Step 9
Press DOWN to exit the first level of programming.
or
Note 1: During programming, if no button is pushed during 30 seconds, the control will go back to the
normal operating mode. This is valid for both programming levels.
Note 2: When changing the time, press and hold the MAN DEF button for 3 seconds to change the
AM/PM mode.
For customer service, call (800) 733-8829 or (800) 733-8948, Fax (989) 773-3210, www.delfield.com
7
Air Curtain Refrigerator Service and Installation Manual
ERC2 Control Instructions, continued
To change the other parameters (Second Level) follow these steps:
Step 1
Press and hold SET and DOWN for 10 seconds. The display will show dSPL
and
Step 2
Step 3
Press SET to change the parameter
Press UP or DOWN to change the options, time or temperature for the
current parameter
Press SET to accept the new value
or
Step 4
Step 5
Press DOWN to go to the next parameter. Then go back to Step 2. After the
last parameter is displayed ( ALHi), the display will go back to the normal
operating condition
Note : to scroll down the parameters without changing them, press the DOWN button.
List of Parameters
Here is a list of the parameters that can be changed in the Second Level of programming, as well as their
options and ranges.
Parameter
8
Description
Range/Options
Delfield
Settings
Display Status
Display
Symbol
dSPL
Information shown on the display
rSP°
Clock Format
CLHr
Temperature
Format
°dSP
Format of the time (12 or 24
hours mode)
Temperature degrees
Defrost Type
dFtP
Type of defrost used in the
application
Fan Status During
Defrost
EFAN
Enable or not the evaporator fan
during defrost
CFAN
Enable or not the condenser fan
during defrost
tDAy – time -of-day
rSP° - Zone
temperature
(refrigerated space)
CyCL– cycle between
time and zone
temperature
Epr° - evaporator coil
temperature
12Hr – AM/PM format
24Hr – 24 hour format
°F – degrees
Fahrenheit
°C – degrees Celsius
ELEC– electric heater
defrost/off cycle
HgAS – hot gas
no – fan is turned off
during defrost
yES– fan remains on
during defrost
no – fan is turned off
during defrost
yES– fan remains on
during defrost
during operating conditions
For customer service, call (800) 733-8829 or (800) 733-8948, Fax (989) 773-3210, www.delfield.com
12Hr
°F
ELEC
yES
no
Air Curtain Refrigerator Service and Installation Manual
ERC2 Control Instructions, continued
Defrost Interval
dFin
Type of defrost interval
Minimum
Compressor Off
Time
Minimum
Compressor On
Time
Alarm Delay
CoFF
Compressor Run
Time
Number of
Defrosts
tdEF
Minimum time that the
compressor will remain turned off
TdAy – time -of-day
setpoint
CPrn – compressor run
time
tdEF – temperature
initiated defrost
Range: from 0 to 15
min
Con
Minimum time that the
compressor will remain turned on
Range: from 0 to 15
min
0
ALrd
Range: from 0 to 59
min
30
nodF
Time delay before the alarm goes
off after the temperature fall off
the two alarm setpoints
Time the compressor will run
between defrosts
Number of defrosts per day
From 0 to 8 (0 means 1
defrost every 28
hours)
4
Range: from 0 min to 4
hours
45
Range: from 0 to 59
min
0
Range: from 0 to 59
min
Range: from 0 to 59
min
Range: from 1 to 25
0
CPrn
Defrost Start
Time
Defrost Duration
dEF1-8
Start time of each defrost
DEFd
Fan Delay
FAnd
Pump Down
Pudn
Defrost duration time (back -up
for defrost termination
temperature)
Delay time for the fan after
defrost(back -up for fan cut -in
temperature)
Pump down duration
Drip Time
driP
Drip time duration
Setpoint
Differential
diF°
Defrost
Initiated
Temperature
tdEF
Cut-in temperature differential
Note: cut -in is cut-out plus
differential
Temperature that will initiate
a defrost cycle
Defrost
Termination
Temperature
Fan Cut-In
Temperature
dEF°
Low Temperature
Alarm
ALLo
FAn°
Temperature in the evaporator
that will terminate the defrost
cycle
Temperature in the evaporator
that will turn the fan on after
defrost
Low temperature setpoint that
will make the alarm do off and
the error message appear on the
display
0
0
3
Range: from -40 to 40°F
or -40 to 4°C
10°F
Range: from 0 to 75 °F
or -18 to 25 °C
45°F
Range: from -40 to
60°F or -40 to 23 °C
30°F
Range: from -40 to
60°F or -40 to 23 °C
25°F
For customer service, call (800) 733-8829 or (800) 733-8948, Fax (989) 773-3210, www.delfield.com
9
Air Curtain Refrigerator Service and Installation Manual
ERC2 Control Instructions, continued
High
Temperature
Alarm
ALHi
High temperature setpoint that
Range: from -40 to
60°F
will make the alarm do off and
60°F or -40 to 23 °C
the error message appear on the
display
Important note: To change from degrees C to F or vice -versa, the user must reprogram all the
parameters that are related to the temperature. The unit does not convert parameters automatically
from degrees F to C or vice-versa.
Example 1 – To adjust the time -of -day

Press and hold SET for 5 seconds

Press SET again

Press Up or DOWN until the correct time appears on the display

Press SET to accept the new time

Press DOWN twice to exit the programming mode
Example 2 – To set one defrost a day, at 11:59 PM
10

Press and hold SET and DOWN for 10 seconds

Press DOWN five times to get to the Defrost Interval ( dFin)

Press SET to change the parameter

Press DOWN until tdAy appears on the display

Press SET to accept the option

Press DOWN seven times to go to the Number of Defrosts ( noDF)

Press SET to change it

Press UP or DOWN until 1 appears on the display

Press SET to accept the change

Press DOWN to go to Defrost Start Time ( dEF1)

Press SET to change the time

Press UP or DOWN until the 11:59 PM appears on the display

Press SET

Press DOWN ten times to exit the programming level
For customer service, call (800) 733-8829 or (800) 733-8948, Fax (989) 773-3210, www.delfield.com
Air Curtain Refrigerator Service and Installation Manual
ERC2 Control Instructions, continued
Error Codes
Display
Er 1
Er 2
Er 3
Er 4
Er 5
Er 6
Control Status
ERC Fault – software or hardware failure
ERC Communication Fault – indicates that there is a problem with the display module cable
Zone Sensor Fault – indicates an open or shorted temperature sensor
Evaporator Sensor Fault – indicates an open or shorted evaporator sensor
ERC Fault – software or hardware failure
Low Temperature Alarm – indicates that the temperature has dropped below the low alarm
setpoint
Er 7
High Temperature Alarm – indicates that the temperature has gone above the high alarm
setpoint
For Error Codes 1, 2 and 5 cut the power to the unit and correct the problem to reset the display.
For Codes 3 and 4, press the UP or DOWN button on the display to reset the error message. If the
display still shows the message, the sensor must be replaced.
The Error Codes 6 and 7 will be automatically reset once the temperature is back within the two
setpoints.
Technical Specifications
Input Power: 120/208-240VAC 50/60Hz (+10, -15%)
Power Consumption: 5VA @ 120-240VAC
Zone and Evaporator Coil Temperature Sensors: NTC thermistor. Range -40 to 199°F
Ambient Operating Conditions: -40 to 122°F; 0 to 95% RH (non-condensing)
Display Module Dimensions: 2.75”W x 1.10”H x 1.38”D
Case Dimensions: 4.40”W x 7.28”H x 3.80”D
Shipping Weight: 3.0 lbs
Agency Approvals:
c-UR-us Recognized Component – Models ERC2-1xxxxxx
c-UL-us Listed Product – Models ERC2-2xxxxxx
NSF International Certified
Output Relay Ratings:
Compressor: SPST NO
120VAC 208VAC 240VAC
Horsepower Rating (hp)
1
1.5
2
FLA/LRA
16/96
12/72
12/72
Pilot Duty
470
470
470
Defrost: SPST NC
Resistive Amps
Horsepower Rating (hp)
Pilot Duty (VA)
120VAC 208VAC 240VAC
16
16
16
½
¾
1
470
470
470
980 S Isabella Rd
Mt Pleasant, MI 48858
(800) 733-8829
For customer service, call (800) 733-8829 or (800) 733-8948, Fax (989) 773-3210, www.delfield.com
Page 5
Updated 6/23/09
11
Air Curtain Refrigerator Service and Installation Manual
ACR-26S Wiring Diagram
12
For customer service, call (800) 733-8829 or (800) 733-8948, Fax (989) 773-3210, www.delfield.com
Air Curtain Refrigerator Service and Installation Manual
Replacement Parts
3234221
3516085
2195005
2183348
2162687
265-696-0003
2194577
2190154
3516084
Caster, 4, Plt, Swvl, Brk
Coil, Evap, 9x17, Acr-26s
Control, Electronic, ERC2, Refg
5
6
4
3
Cord/Plug Assembly, 16/3 Nema 5-15
Motor/fan/shroud Assy, 8", 115V
Pan, Drip, Coil, ACR-26S
Probe, ERC2 Control
Switch, Rocker, 20A/125V
Valve, Exp, 1/2Ton, R-404A
1
2
7
8
9
000-187-0040
1701147
000-BJ4-0030
Door Assembly, ACR-26S, RT
Gasket, Dr, 45.50x23.81
Hinge Assy, Door, ACR-26S, RT
1
2
3
4
5
6
7
8
9
000-BN5-0035
Condenser, Assembly, 1/2hp
3516554
Blade, Fan, 9.00in,
2160019
Guard, Fan, Wire
2162716
Motor, Fan, 16w, 115v,cw
3516462
Capacitor, Start-run
3527026
Comp, Sc12mlx, 115/60 Hz
3516331
Switch, High Pressure
3516322
Drier, Filter, (2)inlet
039-231-0031
Pan, Condensate, Large
3516455
Coil, Cond., 1/2 Hp
For customer service, call (800) 733-8829 or (800) 733-8948, Fax (989) 773-3210, www.delfield.com
13
Air Curtain Refrigerator Service and Installation Manual
Notes
14
For customer service, call (800) 733-8829 or (800) 733-8948, Fax (989) 773-3210, www.delfield.com
Air Curtain Refrigerator Service and Installation Manual
Notes
For customer service, call (800) 733-8829 or (800) 733-8948, Fax (989) 773-3210, www.delfield.com
15
Delfield
™
Mt. Pleasant, MI
®
Covington, TN
Thank you for choosing Delfield!
Help is a phone call away. Help our team of professional, courteous customer
service reps by having your model number and serial number available at the time
of your call (800) 733-8829.
Model:________________________ S/N: _______________________
Installation Date:________________
For a list of Delfield’s authorized parts depots,
visit our website at www.delfield.com
Register your Delfield warranty
online. Go to www.delfield.com
under the service tab to complete.
Delfield
™
®
980 S. Isabella Rd., Mt. Pleasant, MI 48858, U.S.A. • (989) 773-7981 or (800) 733-8829 • Fax (989) 773-3210 • www.delfield.com
Delfield reserves the right to make changes in design or specifications without prior notice. ©2013 The Delfield Company. All rights reserved. Printed in the U.S.A.
DMACR 02/13
9291461