Structural Concepts Oasis P63941R User manual

SELF-SERVICE REFRIGERATED SINGLE DECK OPEN MERCHANDISER (SELF-CONTAINED & REMOTE UNITS)
USER MANUALS/20-26341_OASIS_USER MANUAL_P(L)(D)R_REF_SELF-SVC_SNGL DECK_CASE ||| REV H DATE: 10/17/2022
Model P63941R
Shown With
Product Steps
Model P83941R Shown
With Product Steps Note: This Manual is Applicable
to Models P43941, P63941,
P83941, and Possibly Other
Models Not Depicted Herein.
SCC P/N
20-26341
Oasis
READ AND SAVE THESE INSTRUCTIONS
® USER
MANUAL
Structural Concepts Corp. ∙ 888 E. Porter Rd ∙ Muskegon, MI 49441 Phone: [phone] Fax: [phone] ∙ www.structuralconcepts.com

2
TABLE OF CONTENTS / MODEL APPLICABILITY
TABLE OF CONTENTS ……………..………………………………………………...………………….......
OVERVIEW / TYPE / COMPLIANCE / WARNINGS / PRECAUTIONS / CORDS / WIRING / PLUGS
SKID REMOVAL ……………………...…………………………………………………………………….….
INSTALLATION: POSITIONING & ALIGNING / CASTERS / LEVELERS ...…….…...…………….…..
ELECTRICAL CONNECTIONS (SELF-CONTAINED UNITS) ……………….….………………...….….
START-UP AND OPERATION / ELECTRICAL CONNECTIONS - REMOTE UNITS …………………
START-UP AND OPERATION - SELF-CONTAINED UNITS .…………...…...…..…….………...……...
MAINTENANCE FUNDAMENTALS - REMOTE UNITS (TRAINED SERVICE PROVIDERS ONLY)..
MAINTENANCE FUNDAMENTALS - SELF-CONTAINED UNITS (PERFORMED BY TRAINED
SERVICE PROVIDERS ONLY) ……………………………………………………………………..
MAINTENANCE FUNDAMENTALS - ALL UNITS (TRAINED SERVICE PROVIDERS ONLY) …….
SERIAL LABEL INFORMATION & LOCATION ..……...…………………..……….………..…….….…..
CLEANING SCHEDULE (TO BE PERFORMED BY STORE PERSONNEL) ………...…..…..….….....
PREVENTIVE MAINTENANCE (TO BE PERFORMED BY TRAINED SERVICE PROVIDER) ……...
TROUBLESHOOTING (TO BE PERFORMED BY TRAINED SERVICE PROVIDERS ONLY) ..….....
TROUBLESHOOTING (BY TRAINED SERVICE PROVIDERS ONLY) - CONDENSING SYSTEM …
TROUBLESHOOTING (BY TRAINED SERVICE PROVIDERS ONLY) - EVAPORATOR SYSTEM ..
PROGRAMMABLE CONTROLLER INFORMATION….……..………………….………………………...
TECHNICAL SERVICE CONTACT INFORMATION / WARRANTY INFORMATION ……….............
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3-4
5
6
7
8
9-11
12
13-15
16
17
18
19-20
21-23
24
25
26
27

3
OVERVIEW
• These Structural Concepts merchandisers are
designed to merchandise packaged products at 41 °F
(5 °C) or less product temperatures (unless custom
cases with wire rack shelving).
• Cases should be installed and operated according to
this operating manual’s instructions to ensure proper
performance.
• Improper use will void warranty.
TYPE 1 vs. TYPE 2 CONDITIONS
This unit is designed for the display of products in ambient
store conditions where temperatures and humidity are
maintained within a specific range.
• For Type 1 Conditions (most cases): ambient
conditions are to be at 55% maximum humidity and
maximum temperatures of 75 °F (24 °C).
• Type 2 Conditions: ambient conditions are to be at
60% maximum humidity and maximum temperatures of
80 °F (27 °C).
• If unsure if unit is designed for Type 1 or Type 2
conditions, see tag on case. Location varies depending
upon model.
COMPLIANCE
• Performance issues when in violation of applicable
NEC, federal, state and local electrical and plumbing
codes are not covered by warranty.
• See below compliance guideline.
WARNINGS
• This page contains important warnings to prevent
injury or death. Please read carefully!
WARNING
Hazardous moving parts. Do not operate unit with covers removed.
Fan blades may be exposed when deck panel is removed.
Disconnect power before removing deck panel.
WARNING
Risk of electric shock. Disconnect power before servicing unit.
CAUTION! More than one source of electrical supply is
employed with units that have separate circuits.
Disconnect ALL ELECTRICAL SOURCES before servicing.
WARNING
Condensate Pan is Hot!
Disconnect and allow to cool
before cleaning or removing from case.
WARNING
ELECTRICAL
HAZARD
WARNING
KEEP
HANDS
CLEAR
WARNING
HOT
SURFACE
COMPLIANCE
This equipment MUST be installed in compliance with
all applicable NEC, federal, state and local
electrical and plumbing codes.
OVERVIEW / TYPE / COMPLIANCE / WARNINGS / PRECAUTIONS / CORDS / WIRING / PLUGS - 1 of 2
ATTENTION
CONTRACTORS
WARNING: This product can expose you to chemicals, including
Urethane (Ethyl Carbamate), which are known to the state of
California to cause cancer and birth defects or other reproductive
harm. For more information go to P65Warnings.ca.gov.

CAUTION CAUTION! ADVERSE CONDITIONS / SPACING ISSUES
• Performance issues caused by adverse conditions are NOT warranted.
• To prevent damage to end panels due to condensation, apply industrial grade
silicone sealant and tightly join to opposite end panels. When not adjoining
cases, keep end panels at least 6” away from walls and structures. Rear
panels must also be kept at least 6” from walls and structures.
• Case must not be exposed to direct sunlight or any heat source.
• To maintain proper case temperature, keep case at least 15-feet from exterior
doors, overhead HVAC vents or any air curtain disruption.
• Self-contained case clearance: 6” min. air intake / 6” min. air discharge.
PRECAUTIONS
• Following are important precautions to prevent
damage to unit or merchandise. Read carefully!
WIRING DIAGRAM FORMAT & LOCATION
• Each case has its own wiring diagram folded and in
its own packet.
• Wiring diagram placement may vary; it may be near
ballast box, field wiring box, raceway cover, or other
related location.
REFRIGERANT DISCLOSURE STATEMENT
• This equipment is prohibited from use in California with
any refrigerants on the “List of Prohibited Substances”
for that specific end-use, in accordance with California
Code of Regulations, title 17, section 95374.
• This disclosure statement has been reviewed and
approved by Structural Concepts and Structural
Concepts attests, under penalty of perjury, that these
statements are true and accurate.
OVERVIEW / TYPE / COMPLIANCE / WARNINGS / PRECAUTIONS / CORDS / WIRING / PLUGS - 2 of 2
4
CAUTION! POWER CORD AND PLUG MAINTENANCE
Risk of electric shock. If cord or plug becomes damaged,
replace only with cord and plug of same type.
CAUTION! GFCI BREAKER REQUIREMENT
If N.E.C. (National Electric Code) or your local code
requires GFCI (Ground Fault Circuit Interrupter) protection,
you MUST use a GFCI breaker in lieu of a GFCI receptacle.
CAUTION! CHECK CONDENSATE PAN, ITS POSITION & PLUG!
Water on flooring can cause extensive damage!
• Before powering up case, check that condensate pan is positioned
directly under case’s condensate drain.
• Before powering up case, check that condensate pan’s electrical plug is
SECURELY connected to condensate system’s receptacle.
• If wicking material is used in condensate pan, check that it is secure.
CAUTION! DO NOT RELY ON THERMOMETERS OR
THERMOSTATS FOR PRODUCT (FOOD) TEMPERATURES.
• Thermometers & thermostats reflect air temperatures ONLY.
• For ACTUAL product (food) temperatures, use a calibrated food
probe thermometers ONLY.
• For accurate readings, DO NOT use infrared food thermometers.

5
REMOVAL FROM SKID
Note: Units shown may not
depict an exact representation
of the unit being installed.
5
CASE REMOVAL FROM BRACKETS / SKID (LEVELERS OR CASTERS)
Various Types Of
Case Shipping
Brackets
1. Removing Case Shipping Brackets That Are Attached To Skid
• Remove screws holding shipping brackets to skid.
• Remove shipping brackets from skid.
• See illustrations below.
• Note: Shipping brackets will vary in size, shape, material and
location depending upon case type and model.
3. Remove Case (With Casters) From Skid
A. Place ramp up against skid (to allow case to
smoothly slide off from skid).
B. Maintain support of case at all times or center
of gravity may cause case to fall.
C. Unlock casters. Slide unit to rear of skid. Slide
down ramp and off from skid.
• Note: Illustrations reflect general outline of
sample case and may not reflect your particular
model or options).
Support
case
while
sliding
down
ramp.
Ramp
2. Remove Case (With Levelers or Frame Support
Rails) From Skid
• To prevent damage, support case while sliding it
toward edge of skid.
• When case is at edge of skid, carefully lower to
floor so that two levelers (or one frame support
rail) rests on floor.
• Carefully slide skid out from under case.
• After case is off skid, place into position.
• Note: Illustration below reflects general outline of
sample case and does not reflect any particular
model or options).
Carefully
Slide Skid
Out From
Under Case
Support
case
while
removing
from skid

6
INSTALLATION: POSITIONING & ALIGNING / CASTERS / LEVELERS
Note: Units shown may not depict an exact representation of your particular unit being installed.
1. Position & Align Case Alongside Other Cases
• Before adjusting levelers (or shimming frame
support rails), make certain that the case is in
proper position and, if required, aligned with
adjoining case.
• This may require the repositioning of the case
you are installing or the already positioned
case.
2. Caster Locking / Unlocking Operation (Not on
All Models)
• To lock casters (from the unlocked position),
press down on each RAISED caster lever (as
shown in illustration). Casters are now locked.
• To unlock casters (from the locked position),
press down on the RAISED caster lever (as
shown in illustration at top-right). Casters are
now unlocked.
3. Cases With Levelers: Adjust Levelers
• After case is in position, adjust case so it is level
and plumb (see illustration at right).
• You may need to remove front and/or rear
toe-kick to access levelers.
• Use adjustable wrench (and possibly a pry bar)
to adjust leveler.
• Do not use pry bar on toe-kick as it may buckle.
• Do not use pry bar on end panel as it may chip.
• Use pry bar ONLY on base frame to avoid
damaging case.
• See illustration and photos at right and below.
Pry Bar
Base
Frame
Leveler
Adjustable
Wrench
Toe-Kick
Casters
Locked
Casters
Unlocked
Certain Casters Have
Locks. Yours May Differ.

7
ELECTRICAL CONNECTIONS (SELF-CONTAINED UNITS)
Electrical Connections (Self-Contained Units)
Field wiring hook-up/electrical access locations are shown in illustration below (may not exactly reflect your
particular unit).
• Either single phase leads OR straight blade power cord will be provided.
• See Technical Information Sheet for more information.
Rear Underside
View of Case
Field Wiring Hookup (for
Self-Contained Cases)

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START-UP AND OPERATION / ELECTRICAL CONNECTIONS - REMOTE UNITS
Electrical Connections (Remote Units)
• Model P63941R remote glycol unit is shown below.
• Front panel is shown removed. Hook/slot method.
No screw removal required.
Rear Underside View of
Field Access Box Rear
Front Underside View of
Field Access Box Front
• Access field access box at either front or rear
of case by removing front or rear panel
• Leads are accessible at either front or rear.
• After properly connecting leads, turn main
power switch on. Unit will power-up.
Main Power
Switch Carel®
Temperature
Controller
Front Panel Removed
(For Illustrative Purposes Only)

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START-UP AND OPERATION - SELF-CONTAINED UNITS
1. Merchandiser Refrigeration Assembly Pan Slide-Out Feature
• Retaining screws must be removed to allow refrigeration assembly to be slid out (for servicing and/or
cleaning).
• See illustration below for retaining screw locations.
• See MAINTENANCE FUNDAMENTALS, CONTINUED: CONDENSER PACKAGE LAYOUT section in
this operating manual for illustration of condenser package pulled out from under case.
Refrigeration Assembly Pan
Retaining Screws

10
START-UP AND OPERATION - SELF-CONTAINED UNITS, CONTINUED
2. Condensate Pan Placement
• Before turning on Main Power switch (at front of
case), remove rear panel (by lifting up and off; no
screw removal required).
• Caution! Check that the condensate pan is
positioned directly under the drain BEFORE
turning on Main Power!
Condensate Drain
Hot Gas Loop Con-
densate Tray
• Return rear panel to the case in same manner it
was removed. See below illustration.

11
3. Main Power Switch and Temperature Controller
• Temperature Controller is at case front (shown
below).
• Access by removing front panel. Simply lift up and
off (no screw removal is required).
• See Carel® Temperature Controller section of this
manual for specifics on settings & parameters.
START-UP AND OPERATION - SELF-CONTAINED UNITS, CONTINUED
Main Power
Switch
Temperature
Controller
4. Thermometer
• Thermometer is located in the refrigerated
compartment are for monitoring warmest air
temperature in accordance with NSF Std. 7.
• After leads have been properly connected, turn
main power switch on. Unit will power-up.
• See illustration below.
Thermometer

12
1. Evaporator Fans, Drain, Trough Access
• Caution! Turn main power off and disconnect
from outside power source.
• Remove decking and sub-deck
• Perform maintenance, service or cleaning as
required.
• Return decking and sub-deck to unit in reverse
order in which they were removed.
2. Evaporator Coil Fan Discharge
When main power switch is on, refrigeration
assembly will energize (see START-UP AND
OPERATION section in this operating manual).
Evaporator Coil
Fans
Drain
MAINTENANCE FUNDAMENTALS - REMOTE UNITS (TRAINED SERVICE PROVIDERS ONLY)
• Coil fans should turn on. From inside of the case,
check for discharge air from front baffle, to
confirm that the fans are functioning properly.
• When case has been idle for a long period of time,
the unit will require 75 minutes of run time to pull-
down temperature.
3. Sweat Valve / Balancing Valve
• Sweat valve and balancing valve is at customer
front-right of case).
• Decking must be removed for access.
• See below illustration for general location.
--- Above Illustration Shown Partially Disassembled for Illustrative Purposes Only ---
Refrigeration
Lines
Wire Raceway
Sweat Valve Balancing Valve
Trough

13
1. Evaporator Fans, TXV and Drain Access
• Caution! Turn Main Power off and disconnect
from outside power source.
• Remove Decking and Sub-Deck
• Perform maintenance, service or cleaning as
required.
• Return Decking and Sub-Deck to unit in
reverse order in which they were removed.
2. Evaporator Coil Fan Discharge
When main power switch is on, refrigeration
assembly will energize (see START-UP AND
OPERATION section in this operating manual).
Evaporator Coil Fans Drain
TXV
MAINTENANCE FUNDAMENTALS - SELF-CONTAINED UNITS (TRAINED SERVICE PROVIDERS ONLY)
• Coil fans should turn on. From inside of the case,
check for discharge air from front baffle, to
confirm that the fans are functioning properly.
• When the case is in a start up mode or has been
idle for a long period of time, the unit will require
75 minutes of run time to pull-down temperature.
3. TXV (Thermostatic Expansion Valve)
• TXV is under TXV access panel (at customer
front-righ of case).
• Decking must be removed for access.
• See below illustration for general location of TXV.
--- Above Illustration Shown Partially Disassembled for Illustrative Purposes Only ---
Refrigeration Lines Wire Raceway

14
MAINTENANCE FUNDAMENTALS - SELF-CONTAINED UNITS (TRAINED SERVICE PROVIDERS ONLY)
4. Optional Clean Sweep Condenser Coil (Self-Contained Units Only)
• Clean Sweep Condenser Coil (photo below) is accessible by removing rear grille.
• See Preventive Maintenance (To Be Performed By Trained Service Provider) for cleaning instructions.
• Photo below is after rear grille has been removed case

15
MAINTENANCE FUNDAMENTALS - SELF-CONTAINED UNITS (TRAINED SERVICE PROVIDERS ONLY)
Refrigeration
U-Tubes
Filter Dryer
Electrical
Starter Unit
Condenser Coil
Housing
Condenser Coil Fan,
Fan Housing & Motor
Overflow Pan (Under
Overflow Pan
Electrical Box)
Hot Gas Loop
Condensate Pan
5. Condenser Package Layout (Hot Gas Loop Condensate Tray)
• Note: Due to design variables, refrigeration package component layout can slightly vary in size and
location.
Hot Gas Loop
Condensate System
Sight Glass
Compressor
Receiver
Note: Illustrations shown may not
exactly reflect every feature or
option of your particular case.
Optional Wicking
Material

16
MAINTENANCE FUNDAMENTALS - ALL UNITS (TRAINED SERVICE PROVIDERS ONLY)
6. Honeycomb Air Diffuser Removal
Caution! Be careful not to dislodge the heater wire
(a.k.a. heat tape) from honeycomb bracket as it
prevents condensation from forming in the case.
A. Grasp honeycomb bracket and pull outward.
B. Both bracket and honeycomb may be pulled out
from housing.
C. View of bracket/honeycomb assembly (with heat-
er wire/heat tape still connected to case).
D. View of heater wire/heat tape routed through
rear of honeycomb (at corner of bracket).
E. To remove, apply pressure to collapse
honeycomb and remove from retaining bracket.
Honeycomb
Air Diffuser
A
EF
B
C
D
G
H
F. Section of honeycomb shown removed from
bracket.
G. Heated wire/heat tape MUST remain in place
(and tape secure) while removing honeycomb.
H. Remaining portion of honeycomb may be slid out
at opposite end of bracket (while taking care to
NOT dislodge heater wire/heat tape).
> See PREVENTIVE MAINTENANCE (TO BE
PERFORMED BY TRAINED SERVICE PROVIDER)
section in this manual for cleaning instructions.
> Replace honeycomb air diffuser in reverse order it
was removed. Caution! Be careful not dislodge the
heater wire/heat tape from honeycomb bracket!

17
SERIAL LABEL LOCATION & INFO LISTED / TECH INFO & SERVICE / REFRIGERATED CASES ONLY
--- Sample Serial Label For Refrigerated Cases ---
MODEL NRS3648RXV-SAMPLE
SERIAL NO. 12345X30DZ098765
TYPE II DISPLAY REFRIGERATOR: THIS EQUIPMENT IS INTENDED FOR USE IN AN AREA
WHERE THE ENVIRONMENTAL CONDITIONS ARE CONTROLLED AND MAINTAINED SUCH
THAT THE AMBIENT TEMPERATURE DOES NOT EXCEED 80 °F (27 °C).
888 E. Porter Rd - Muskegon, MI 49441
3048256
Conforms to UL Std. 471
Conforms to NSF/ANSI Stds. 2 & 7
CERTIFIED TO CAN/CSA
STD C22.2 NO 120
ELECTRICAL RATING
REFRIGERANT
DESIGN PRESSURE
MINIMUM CIRCUIT AMPACITY
MAXIMUM OVERCURRENT
120/1/60 16 A
R513A AMOUNT 50 OZ
HIGH 186 LOW 88
20A
20A
Super Heat Temp 6-8 °F FOR PARTS AND SERVICE
Defrost 6 defrosts per day, 45 °F CALL 1-800-433-9490
Serial Label Location & Information Listed /
Technical Information & Service
• Serial labels are affixed at a wide range of places
(on the header, near thermostat, at case rear,
behind panels/toe-kicks, on electrical boxes, etc.).
• Serial labels contain electrical, temperature and
refrigeration information, as well as regulatory
standards to which the case conforms.
• Sample serial label shown below.
• For additional technical information and service, see
the TECHNICAL SERVICE page in this manual for
instructions on contacting Structural Concepts’
Technical Service Department.
Reveal
Harmony
Fusion
Impulse
Addenda
Blend
Grocerant
Oasis
Sample QR Code
SCAN FOR PRODUCT LITERATURE

18
CLEANING SCHEDULE (TO BE PERFORMED BY STORE PERSONNEL)
AREA TO CLEAN FREQ. INSTRUCTIONS
Case Exterior Daily Condenser Coil (Self-Contained Units): Vacuum or brush condenser
coil at case rear (after removing rear grille).
Weekly Magnetized Condenser Coil Filter (Self-Contained Units): Remove
and submerse in warm, soapy water. Use nylon brush to remove dust
and dirt. Pat dry (or blow dry with wet/dry vacuum). Return to case.
Weekly Acrylic Sneeze Guard: Clean with a warm water and mild soap solution
and soft cloth. Never use ammonia-based cleaners on acrylic.
Case Interior Weekly Decks and Product Steps: Wipe off decks and product steps with moist
cloth. For hardened stains, decks and steps can be removed and sub-
mersed in warm, soapy water and cleaned with nylon brush.
Monthly Condenser Coil (Self-Contained Units):
• Remove rear panel (by lifting up and off). No screw removal is
required.
• Use wet/dry vacuum or other vacuum with high air velocity and
bristled brush.
• Clean dust and dirt that collects on the Condenser Coil. See
illustration below.
• Caution! Coil fins are sharp. Handle with care!
• Return rear panel to case.
Removable, Magnetized Condenser
Coil Filter (Optional). Note: Filter is
Placed over Rear Panel Grille
Sample
Self-Contained Unit
Shown at Left

19
PREVENTIVE MAINTENANCE (TO BE PERFORMED BY TRAINED SERVICE PROVIDERS) - Page 1 of 2
PREVENTIVE
MAINTENANCE
FREQUENCY INSTRUCTIONS
Case Exterior Monthly Condenser Package (Self-Contained Units): Disconnect power from
case before cleaning the condenser coil!
• Remove rear grille (by removing 4 screws).
• Roll / slide out refrigeration assembly. Note: At initial slide-out, it
may be necessary to remove two (2) compressor pan shipment
screws for refrigeration assembly to slide out.
• Use air pressure or industrial strength vacuum; clean dust and dirt
that may collect on the condenser coil. See illustration below.
• Use damp cloth to clean all internal areas of condenser package
(including hot gas loop condensate tray, overflow condensate pan,
fan blades, etc.).
• Caution! Coil fins are sharp. Handle with care!
• Slide/roll Condenser unit assembly back under case.
• Replace rear grille to case (4 screws).
• See illustration below.
Quarterly Optional Clean Sweep™ Condenser Coil (Self-Contained Units):
Disconnect power from case before cleaning Clean Sweep Condenser
Coil!
• Remove rear grille (by removing 4 screws).
• Slide/Roll out condensing unit assembly.
• Remove the four (4) screws holding the Clean Sweep™ rails intact.
• Remove the Clean Sweep™ rail.
• Wash rails’ brushes in hot water and mild soap solution.
• If brushes are worn, they must be replaced. Call Technical Service
Department to replace. Toll-Free number is listed at end of manual.
• Clean condenser coil: Use air pressure or industrial strength
vacuum; clean dust and dirt that collects on condenser coil.
• Caution! Coil fins are sharp. Handle with care!
• Reattach Clean Sweep rail to condensing unit (4 screws).
• Slide/roll condensing unit assembly back under case.
• Replace rear grille to case (4 screws).
• See photos below.
(4) Screws
--- Above photos are taken after rear grille has been removed from case ---
Brushes
Rail

20
PREVENTIVE MAINTENANCE (TO BE PERFORMED BY TRAINED SERVICE PROVIDERS) - Page 2 of 2
PREVENTIVE
MAINTENANCE
FREQUENCY INSTRUCTIONS
Case Exterior Quarterly Under Case Cleaning: Once refrigeration package is clear of unit,
vacuum under case to remove all dust and dirt that may collect under
case.
Case Interior Quarterly Tub, Coil and Drain: Remove decking and clean tub, coil and drain
with warm water and mild soap solution. Remove any debris that may
clog drain.
Quarterly Fan Blades, Motor, and Bracket: Wipe down each blade, motor and
bracket with moist cloth.
Quarterly Honeycomb Air Diffuser: See MAINTENANCE FUNDAMENTALS,
CONTINUED (TRAINED SERVICE PROVIDERS ONLY) section in
manual for instructions on removing honeycomb from its retaining
bracket as well as proper replacement.
• Caution! While removing honeycomb air diffuser from case, be
careful not to dislodge the heater wire (a.k.a. heat tape) from
honeycomb bracket as it prevents condensation from forming in
the case.
• After honeycomb has been removed from case, clean honeycomb
with warm water, soap solution and nylon brush. Submerse if
necessary. Use nylon brush to dislodge hardened dust particles
and stubborn or sticky residue. Dry by using vacuum’s blow mode
(vs. suction mode).