Structural Concepts Oasis MOT4048RSS.5197, Oasis MOT6048RSS.5197 Installation & Operating Manual

P/N 20-09455

READ AND SAVE THESE INSTRUCTIONS

INSTALLATION &

OPERATING MANUAL

M O B I L E S E R I E S

Rev C Date: 10.1.2017

MULTI-PURPOSE SELF-SERVICE REFRIGERATED ISLAND MERCHANDISER

Operating Manuals\Oasis\MOT4048RSS-5197_MOT6048RSS.5197_20-09455.pub

888 E. Porter Road ∙ Muskegon, MI 49441 Phone: [phone] Fax: [phone] www.structuralconcepts.com

Model

MOT4048RSS.5197

Model

MOT6048RSS.5197

2

TABLE OF CONTENTS

OVERVIEW / DISPLAY TYPE I vs. II / COMPLIANCE / WARNINGS / PRECAUTIONS / WIRING ...

CASE REMOVAL FROM SKID (LEVELERS OR CASTERS) …………………………..………………..

START-UP: CORD / MAIN POWER SWITCH / TEMPERATURE CONTROLLER ACCESS ...………

START-UP, CONTINUED: CHECKING AIRFLOW UNDER DECKING …………………………………

PRODUCT PLACEMENT / AIRFLOW CONSIDERATIONS / LOAD LINES .……………….…………..

REFRIGERATION FUNDAMENTALS: FRONT GRILLE REMOVAL / THERMOMETER

LOCATIONS / HONEYCOMB AIR DIFFUSER ...……………………………………......……………..

REFRIGERATION FUNDAMENTALS, CONTINUED: REFRIGERATION UNIT ACCESS /

ILLUSTRATED PARTS BREAKDOWN ………….…….……………………………..………………...

SERIAL LABEL INFORMATION & LOCATION ...………..………………………………………………..

PREVENTIVE MAINTENANCE - HONEYCOMB AIR DIFFUSERS (SERVICE TECHNICIANS
ONLY) ..……………………………………………………………………………………………………...

TROUBLESHOOTING (TO BE PERFORMED BY TRAINED SERVICE PROVIDERS ONLY) ………
TROUBLESHOOTING - CONDENSING SYSTEM (BY TRAINED SERVICE PROVIDERS ONLY) ...
TROUBLESHOOTING - EVAPORATOR SYSTEM (BY TRAINED SERVICE PROVIDERS ONLY) ..

GENERAL CLEANING (TO BE PERFORMED BY STORE PERSONNEL UNLESS NOTED
OTHERWISE) ……………………………………………………………………..………………….…...

CAREL® TEMPERATURE CONTROLLER INFORMATION ………………………..……………………

TECHNICAL SERVICE CONTACT INFORMATION & WARRANTY INFORMATION ………….…..…

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5

6

7

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9

10

11

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13-15

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17

18-20

21

22

3

OVERVIEW

 These Structural Concepts merchandisers are

designed to merchandise packaged products at 40 °F
(4.5 °C) or less product temperatures.

 Cases should be installed and operated according to

this operating manual’s instructions to insure proper
performance.

 Improper use will void warranty.

TYPE I vs. TYPE II ENVIRONMENTAL CONDITIONS

This unit is designed for the display of products in ambient
store conditions where temperature and humidity are
maintained within a specific range.

 Type I display refrigerators are intended for use in an

area where environmental conditions are controlled and
maintained so that the ambient temperature does not
exceed 75 °F (24 °C) and 55% maximum humidity.

 Type II display refrigerators are intended for use in an

area where environmental conditions are controlled and
maintained so that the ambient temperature does not
exceed 80 °F (27 °C) and 55% maximum humidity.

 If unsure if your unit is Type I or II, see tag next to serial

label. See SERIAL LABEL LOCATION &
INFORMATION LISTED / TECH INFO & SERVICE
section in this manual for sample serial labels.

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!

PRECAUTIONS and WIRING DIAGRAMS

 See next page for PRECAUTIONS and WIRING

DIAGRAM information.

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

Condenser 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 / DISPLAY TYPE I vs. II / COMPLIANCE / WARNINGS / PRECAUTIONS - PAGE 1 of 2

4

OVERVIEW / CONDITIONS / COMPLIANCE / WARNINGS / PRECAUTIONS / WIRING - PAGE 2 of 2

CAUTION! GFCI BREAKER USE RECOMMENDATION

If N.E.C. (National Electric Code) or your local code

requires GFCI (Ground Fault Circuit Interrupter) protection,

the use of a GFCI breaker is strongly recommended.

PRECAUTIONS

 Following are important precautions to prevent

damage to unit or merchandise.

 Please read carefully!
 See previous page for specifics on OVERVIEW, NSF

TYPE, COMPLIANCE and WARNINGS.

WIRING DIAGRAM

 Each case has its own wiring diagram folded and in

its own packet.

 Wiring diagram placement may vary; it may be

placed near ballast box, field wiring box, raceway
cover, or other related location.

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 placed near ballast

box, field wiring box, raceway cover, or other related location.

CAUTION! ADVERSE CONDITIONS / SPACING ISSUES

 Performance issues caused by adverse conditions are NOT warranted.
 Keep end panels tightly joined or at least 6” away from structures to

prevent condensation. Keep rear panel at least 6” from wall/structure.

 Unit must be kept at least 15-feet from exterior doors, overhead HVAC

vents or any air curtain disruption to maintain proper temperatures.

 Unit must not be exposed to direct sunlight or any heat source.
 Self-contained unit clearance: 6” min. air intake / 6” min. air discharge.

CAUTION

CAUTION! IF YOUR UNIT IS SELF-CONTAINED, YOU MUST

CHECK CONDENSATE PAN POSITION & PLUG!

Water on flooring can cause extensive damage!

Before powering up unit, you must check and confirm that:

 Condensate pan is DIRECTLY UNDER condensate drain.
 Condensate pan plug is securely plugged into receptacle.
 Overflow pan has plug connected to its box.
 Units with optional Clean Sweep® MUST HAVE two plugs connected.

CAUTION! DO NOT RELY ON THERMOMETERS OR THERMOSTATS

FOR ACTUAL PRODUCT (FOOD) TEMPERATURES.

 Thermometers and thermostats reflect air temperatures ONLY.
 For ACTUAL food temperatures, use a calibrated food thermometer.

5

CASE REMOVAL FROM SKID (LEVELERS OR CASTERS)

Various Types Of

Case Shipping

Brackets

1. Removing Case Shipping Brackets That Are Attached To Skid

 Remove screws holding Case Shipping Brackets to skid.
 Remove Case Shipping Brackets from Skid.
 See illustrations below. Note: Shipping Brackets will vary in size, shape, material and location depending

upon case type and model.

2. Remove Case (With Casters)
From Skid

A. Place ramp up against pallet

(to allow case to smoothly slide

off pallet) at location shown
below.

B. Maintain support of case at all

times.

C. Unlock casters. Slide unit to

edge of pallet. Slide down ramp
and off from pallet.

Ramp To Be Placed On This
(Or Opposite) Side Of Case
To Allow Ease of Removal
From Pallet.

START-UP: CORD / MAIN POWER SWITCH / TEMPERATURE CONTROLLER ACCESS

6

OFF

ON

Main Power (Rocker) Switch

1. Merchandiser Start-Up

 Plug cord into a certified electrical outlet with

ground.

 Turn on main power switch at center rear of

case (as shown below-left).

 Supply power will start evaporator coil fans

and the compressor motor.

 From the front of the case, raise the deck

pans and check to see that the evaporator
coil fan is functioning properly (as shown
on next page).

 When the case is in a start up mode (or has

been idle for a long period of time), the unit

will require approximately 30 minutes

runtime in order to pull down temperature.

2. Temperature Controller Access

 Assembly or disassembly and servicing

to be accomplished by licensed
electrical / refrigeration contractor.

 Temperature control module is located on

the electrical box.

 Electrical box is at center-rear of case (as

shown below-left).

 For temperature setting changes, refer to the

Carel™ temperature controller section of this
operating manual.

Temperature Controller

Side of Case

Refrigeration Package

Side of Case

View of Temperature
Controller Side of Case

Temperature Controller

START-UP, CONTINUED: CHECKING AIRFLOW UNDER DECKING

7

3. Checking Airflow Under Decking

 Turn on main power switch at center rear of case

(as shown on previous page).

 Supply power will start evaporator coil fans and

the compressor motor.

 From either end of case (front or rear), raise

deck pans and check to see that the coil fans are
functioning properly.

 Illustration below shows entirely-removed deck

pan.

 After case has been energized, fans should be

functional.

 Caution! Rotating fans can cause serious injury!

Refrigeration Lines (Routed

To Refrigeration Package)

Refrigeration
Lines

Drain

TXV Valve

Evaporator Coils

Evaporator Fan

Evaporator Fan
Shroud

Rear Plenum