Delfield 402P Installation Manual

Compact Refrigerators & Freezers

400 & 4000 Series

Original Instructions
Installation, Operation and Maintenance Manual

This manual is updated as new information and models are released. Visit our website for the latest manual.

*9294045*

Part Number: 9294045 08/15

Safety Notices

Warning

n

Read this manual thoroughly before operating, installing
or performing maintenance on the equipment. Failure
to follow instructions in this manual can cause property
damage, injury or death.

DANGER

Do not install or operate equipment that has been
misused, abused, neglected, damaged, or altered/
modified from that of original manufactured
specifications.

DANGER

Keep power cord AWAY from HEATED surfaces. DO NOT
immerse power cord or plug in water. DO NOT let power
cord hang over edge of table or counter.

DANGER

All utility connections and fixtures must be maintained
in accordance with Local and national codes.

Warning

n

Authorized Service Representatives are obligated to
follow industry standard safety procedures, including,
but not limited to, local/national regulations for
disconnection / lock out / tag out procedures for all
utilities including electric, gas, water and steam.

Warning

n

Do not store or use gasoline or other flammable vapors
or liquids in the vicinity of this or any other appliance.
Never use flammable oil soaked cloths or combustible
cleaning solutions, for cleaning.

Warning

n

Do not use electrical appliances or accessories other
than those supplied by the manufacturer.

Warning

n

Use caution when handling metal surface edges of all
equipment.

Warning

n

This appliance is not intended for use by persons
(including children) with reduced physical, sensory
or mental capabilities, or lack of experience and
knowledge, unless they have been given supervision
concerning use of the appliance by a person responsible
for their safety. Do not allow children to play with this
appliance.

Caution

,

Use caution handling, moving and use of the R290
refrigerators to avoid either damaging the refrigerant
tubing or increasing the risk of a leak. Components
shall be replaced with like components. Servicing shall
be done by a factory authorized service personnel to
minimize the risk of possible ignition due to incorrect
parts or improper service.

Notice

Proper installation, care and maintenance are
essential for maximum performance and trouble-free
operation of your equipment. Visit our website www.
mtwkitchencare.com for manual updates, translations,
or contact information for service agents in your area.

Warning

n

This product contains chemicals known to the State
of California to cause cancer and/or birth defects or
other reproductive harm. Operation, installation, and
servicing of this product could expose you to airborne
particles of glasswool or ceramic fibers, crystalline
silica, and/or carbon monoxide. Inhalation of airborne
particles of glasswool or ceramic fibers is known to the
State of California to cause cancer. Inhalation of carbon
monoxide is known to the State of California to cause
birth defects or other reproductive harm.

Section 1
General Information

Section 2
Installation

Section 3
Operation

Table of Contents

Model Numbers .................................................................................................................. 5

Serial Number Location ..................................................................................................... 5

Warranty Information ........................................................................................................ 5

Regulatory Certifications ..................................................................................................5

Location ..............................................................................................................................7

Weight of Equipment .........................................................................................................8

Clearance Requirements ....................................................................................................8

Dimensions ......................................................................................................................... 8

Electrical Service ................................................................................................................ 9

Voltage .......................................................................................................................................................9

Rated Amperages, Horsepower, Voltage & Power Cord Chart ...............................................9

Heat of Rejection ................................................................................................................ 9

Drain Connections ............................................................................................................10

Caster Or Leg Installation ................................................................................................10

Leg Leveling .......................................................................................................................................... 10

Caster and Leg Mounting Detail .................................................................................................... 11

Loosen Freezer Compressor Bolts ................................................................................... 11

Section 4
Maintenance

Section 5
Troubleshooting

Controls/Programming/Settings ....................................................................................14

R404A Refrigerators ............................................................................................................................ 14

R290 Refrigerators ............................................................................................................................... 14

Freezers ................................................................................................................................................... 15

Evaporator Fan Operation ................................................................................................................ 16

Cleaning and Sanitizing Procedures ...............................................................................17

General .................................................................................................................................................... 17

Interior Cleaning .................................................................................................................................. 18

Exterior Cleaning ................................................................................................................................. 18

Drain ......................................................................................................................................................... 19

Cleaning the Condenser Coil .......................................................................................................... 19

Casters ..................................................................................................................................................... 19

Doors/Hinges ........................................................................................................................................ 19

Preventing Blower Coil Corrosion ................................................................................................. 19

Field Installation ..................................................................................................................................19

Problem -> Cause -> Correction Chart ............................................................................21

Part Number: 9294045 08/15 3

Table of Contents (continued)

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4 Part Number: 9294045 08/15

Section 1

General Information

Model Numbers

This manual covers standard units only.

NOTE: For custom units, consult Manitowoc KitchenCare at
1-844-724-CARE.

Work Top Refrigerator Bases With Stainless Steel Top &

Backsplash

402, 402P ST4048, ST4048P

Undercounter Refrigerator Bases With Stainless Steel Top

406, 406P UC4048, UC4048P

Undercounter Refrigerator With Subtop And 3.75” Casters

406CA, 406CAP

The prefix P on a model number indicates the use of the
refrigerant propane.

Work Top Freezer Bases With Stainless Steel Top &

Backsplash

403 ST4148

Undercounter Freezer Bases With Stainless Steel Top

407 UC4148

Undercounter Freezer With Subtop And 3.75” Casters

407CA

Serial Number Location

The serial number on 400 series compact refrigerators and
freezers is printed on the right side of the interior back wall.

The serial tag on 4000 series compact refrigerators and
freezers is located either on the left upper sidewall inside
the cabinet or under the top nosing directly above the door
when the door is in the closed position (right hand door
when there are two doors).

Always have the serial number of your unit available
when calling for parts or service.

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

Models are certified by:

• National Sanitation Foundation (NSF)

• Underwriters Laboratories (UL)

• Underwriters Laboratories of Canada (CUL)

Part Number: 9294045 08/15 5

General Information Section 1

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6 Part Number: 9294045 08/15

Section 2

Installation

DANGER

Installation must comply with all applicable fire and
health codes in your jurisdiction.

DANGER

Use appropriate safety equipment during installation
and servicing

Warning

n

Remove all removable panels before lifting and
installing.

Warning

n

Do not damage the refrigeration circuit when installing,
maintaining or servicing the unit.

Location

Warning

n

This equipment must be positioned so that the plug is
accessible unless other means for disconnection from
the power supply (e.g., circuit breaker or disconnect
switch) is provided.

Warning

n

Adequate means must be provided to limit the
movement of this appliance without depending on or
transmitting stress to the electrical conduit or gas lines.

Warning

n

To avoid instability the installation area must be capable
of supporting the combined weight of the equipment
and product. Additionally the equipment must be level
side to side and front to back.

Warning

n

This equipment is intended for indoor use only. Do not
install or operate this equipment in outdoor areas.

Caution

,

Do not position the air intake vent near steam or heat
exhaust of another appliance.

The location selected for the equipment must meet the
following criteria. If any of these criteria are not met, select
another location.

• Units are intended for indoor use only.

• The location MUST be level, stable and capable of
supporting the weight of the equipment.

• The location MUST be free from and clear of
combustible materials.

• Equipment MUST be level both front to back and side to
side.

• Position the equipment so it will not tip or slide.

• Front casters MUST be locked once positioned.

• Recommended air temperature is 41° - 86°F (5° - 30°C).

• Proper air supply for ventilation is REQUIRED AND
CRITICAL for safe and efficient operation. Refer to
Clearance Requirements chart on page 8.

• Do not obstruct the flow of ventilation air. Make sure the
air vents of the equipment are not blocked.

Part Number: 9294045 08/15 7

Installation Section 2

• Do not install the equipment directly over a drain.
Steam rising up out of the drain will adversely affect
operation, air circulation, and damage electrical /
electronic components.

Weight of Equipment

Model Weight

402, 402P 176lbs (80kg)

403 184lbs (83kg)

406, 406P 176lbs (80kg)

406CA, 406CAP 168lbs (76kg)

407 176lbs (80kg)

407CA 168lbs (76kg)

ST4048, ST4048P 234lbs (106kg)

ST4148 242lbs (110kg)

UC4048, UC4048P 236lbs (107kg)

UC4148 236lbs (107kg)

Clearance Requirements

DANGER

Minimum clearance requirements are the same for
noncombustible locations as for combustible locations.
The flooring under the appliance must be made of a
noncombustible material.

DANGER

Risk of fire/shock. All minimum clearances must be
maintained. Do not obstruct vents or openings.

Back Top / Sides

3.00” (76mm) 1.00” (25mm)

• Keep the vents clean and free of obstruction.

• The factory installed legs must be used and not
removed.

Dimensions

Model Length Depth Height

402,

402P

403 27” (69cm) 28.5” (72cm) 39.5” (100cm)

406,

406P

406CA,

406CAP

407 27” (69cm) 28.5” (72cm) 35.5” (90cm)

407CA 27” (69cm) 27.75” (70cm) 33.25” (84cm)

ST4048,

ST4048P

ST4148 48” (122cm) 28.5” (72cm) 39.5” (100cm)

UC4048,

UC4048P

UC4148 48” (122cm) 28.5” (72cm) 35.5” (90cm)

Model Volume Shelf Space

402

402P

403
406

406P

406CA

406CAP

407

407CA

ST4048

ST4048P

ST4148

UC4048

UC4048P

UC4148

27” (69cm) 28.5” (72cm) 39.5” (100cm)

27” (69cm) 28.5” (72cm) 35.5” (90cm)

27” (69cm) 27.75” (70cm) 33.25” (84cm)

48” (122cm) 28.5” (72cm) 39.5” (100cm)

48” (122cm) 28.5” (72cm) 35.5” (90cm)

3

5.7Ft

(161L) 4.6Ft2 (43dm2)

3

10.80Ft

(306L) 8.0Ft2 (74dm2)

8 Part Number: 9294045 08/15

Section 2 Installation

Electrical Service

DANGER

Check all wiring connections, including factory
terminals, before operation. Connections can become
loose during shipment and installation.

DANGER

Units with two power cords must be plugged into
individual branch circuits. During movement, cleaning
or repair it is necessary to unplug both power cords.

Warning

n

This appliance must be grounded and all field wiring
must conform to all applicable local and national
codes. Refer to rating plate for proper voltage. It is the
responsibility of the end user to provide the disconnect
means to satisfy the authority having jurisdiction.

VOLTAGE

All electrical work, including wire routing and grounding,
must conform to local, state and national electrical codes.

The following precautions must be observed:

• The equipment must be grounded.

• A separate fuse/circuit breaker must be provided for
each unit.

• A qualified electrician must determine proper wire size
dependent upon location, materials used and length
of run (minimum circuit ampacity can be used to help
select the wire size).

• The maximum allowable voltage variation is ±10% of
the rated voltage at equipment start-up (when the
electrical load is highest).

• Check all green ground screws, cables and wire
connections to verify they are tight before start-up.

RATED AMPERAGES, HORSEPOWER, VOLTAGE &
POWER CORD CHART

Units with plugs are supplied with approximately 6ft
(183cm) cords.

Models 406 and 407 may be stacked using a stacking collar.
In this case two 6ft (183cm) long grounded supply cords
and plugs are standard.

Model Amps HP Voltage,

Cycle, Phase

402,

402P

403 5.8

406,

406P

406CA,

406CAP

407 5.8

407CA 5.8

ST4048,

ST4048P

ST4148 5.6 1/3

UC4048,

UC4048P

UC4148 5.6 1/3

4.0

4.0

4.0

4.0

4.0 1/5

1/5

115/60/1 5-15P

NEMA

Plug

Heat of Rejection

Model BTU/Hour

402, 402P 1430

403 1092

406, 406P 1430

406CA, 406CAP 1430

407 1092

407CA 1092

ST4048, ST4048P 1430

ST4148 1404

UC4048, UC4048P 1430

UC4148 1404

Part Number: 9294045 08/15 9

Installation Section 2

Drain Connections

Warning

n

If a refrigerated base does not have a condensate
evaporator supplied, you must connect the condensate
line to a suitable drain. Otherwise, water will collect on
the floor, causing a potentially hazardous situation.

Warning

n

Moisture collecting from improper drainage can create a
slippery surface on the floor and a hazard to employees.
It is the owner’s responsibility to provide a container or
outlet for drainage.

Caster Or Leg Installation

DANGER

Legs or casters must be installed and the legs or casters
must be screwed in completely to prevent bending.
When casters are installed the mass of this unit will
allow it to move uncontrolled on an inclined surface.
These units must be tethered/secured to comply with
all applicable codes.

1. Carefully place the unit on its back.

2. Located at each caster mounting location are 4 Phillips
head screws, for a total of 16 screws. Remove them.

3. Place a locking plate caster or leg over one of the front
holes, matching the 4 mounting holes to the pre-drilled
holes in the underside of the unit. Insert 4 Phillips head
screws and tighten. Repeat with the other locking front
caster or leg.

4. Repeat step 3 with the non-locking casters or legs in
the rear of the unit.

5. Carefully lift the unit upright.

Caution

,

After installing casters, the unit must stand upright for
twenty-four (24) hours before being powered up to
assure oil return to the compressor sump.

Plate Casters

With Locks

Warning

n

The unit must be installed in a stable condition with
the front wheels locked. Locking the front casters after
installation is the owner’s and operator’s responsibility.

Warning

n

Use a jack to lift the refrigeration unit off the ground
just far enough to remove the leg/caster. Place blocking
underneath the unit. Do not work underneath a raised
unit without proper blocking. Do not lift the unit more
than necessary to remove the leg/caster. Lifting the unit
too far can make the unit unstable.

Caution

,

All single-section units require that the sw ivel casters
be mounted on the front and rigid casters be mounted
on the rear.

Plate Casters

Without Locks

Screws

LEG LEVELING

All four legs are adjustable. Adjust each leg until the unit is
stable and level left to right. If necessary adjusting the front
legs slightly higher than the rear by about 1/8” (3mm) will
help the door remain closed.

10 Part Number: 9294045 08/15

Section 2 Installation

2.38”

(60mm)

3.40”

(86mm)

2.38”

(60mm)

3.40”

(86mm)

2.82”

(72mm)

1.75”

(44mm)

CASTER AND LEG MOUNTING DETAIL

A universal bolt hole pattern is provided on the bottom of
the cabinet. It will accommodate any leg or caster. Simply
line up the plate holes with the corresponding cabinet
holes.

2.38”

(60mm)

3.40”

(86mm)

NOTE: If hole pattern on caster/leg matches the one above
mount in outer set of holes.

• 6” Leg - 3234569

1.75”

(44mm)

0.94”

(24mm)

2.14”

(54mm)

NOTE: If hole pattern on caster/leg matches the one above
mount in inner set of holes.

• 2” Caster - 3234148

Loosen Freezer Compressor Bolts

Semi hermetic models should be loosened before
operating. Loosen (but do not remove) the bolts on the
compressor. If not done the freezer may vibrate excessively
when the compressor is running,

2.82”

(72mm)

NOTE: If hole pattern on caster/leg matches the one above
mount in middle set of holes.

• 3” Caster - 3234024

• 5” Caster - 3234161

• 6” Leg - 3234791

Part Number: 9294045 08/15 11

Installation Section 2

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12 Part Number: 9294045 08/15

Section 3

Operation

DANGER

The on-site supervisor is responsible for ensuring that
operators are made aware of the inherent dangers of
operating this equipment.

DANGER

Do not operate any appliance with a damaged cord
or plug. All repairs must be performed by a qualified
service company.

DANGER

Never stand on the unit! They are not designed to
hold the weight of an adult, and may collapse or tip if
misused in this manner.

Warning

n

Do not contact moving parts.

Caution

,

Do not throw items into the storage area. Failure to
heed this recommendation could result in damage to
the interior of the cabinet or to the blower coil.

Warning

n

All covers and access panels must be in place and
properly secured, before operating this equipment.

Warning

n

Do not use electrical appliances inside the food storage
compartment of this appliance.

Warning

n

The operator of this equipment is solely responsible
for ensuring safe holding temperature levels for all
food items. Failure to do so could result in unsafe food
products for customers.

Warning

n

Overloading shelves can damage equipment or cause
bodily injury.

Warning

n

Damp or wet hands may stick to cold surfaces.

Caution

,

Do not block the supply and return air grills or the air
space around the air grills. Keep plastic wrappings,
paper, labels, etc. from being airborne and lodging in
the grills. Failure to keep the air grills clear will result in
unsatisfactory operation of the system.

Part Number: 9294045 08/15 13

Operation Section 3

Controls/Programming/Settings

R404A REFRIGERATORS

After the unit is connected to power it will automatically
begin operating. With the doors closed, the temperature
of the cabinet should reach 36°F to 40°F (2°C to 4°C) on
refrigerators in about one hour.

A thermostat located in the evaporator housing on interior
rear of the unit, controls the temperature in the box. The
factory setting for the control is 4 and maintains about 38°F
(3°C) in the box. Set toward 1 for higher temperatures and
toward 7 for lower temperatures.

Refrigerators defrost automatically with every cycle of the
compressor. The water generated is routed to a pan on the
rear of the unit and is evaporated by the heat given off by
the compressor.

During normal operation the evaporator fan may cycle
and/or pulse independently of the compressor. Consult
the service manual or contact Technical Support at
1-844-724-CARE if you are unsure of the proper
function.

R290 REFRIGERATORS

At initial start-up or anytime power is disconnected, then
reconnected to the unit, the control will delay all operations
for a short time (up to 30 minutes.) While in this delay
period the control will initialize.

With the doors closed, the temperature of the cabinet
should reach 36°F to 40°F (2°C to 4°C) on refrigerators
in about one hour. The electronic temperature control
constantly monitors box temperature and evaporator coil
temperature to maintain consistent product temperatures.

Refrigerators periodically go into defrost to allow
the accumulated frost on the evaporator to clear, the
compressor and condenser fan motor will turn off when
the temperature control detects a certain evaporator
temperature. After the defrost cycle is complete, the
temperature control will return to a normal cooling cycle.
The water generated is routed to a pan on the rear of
the unit and is evaporated by the heat given off by the
compressor.

During normal operation the evaporator fan may cycle
and/or pulse independently of the compressor. Consult
the service manual or contact Technical Support at
1-844-724-CARE if you are unsure of the proper
function.

Electronic Temperature Control Location & Adjustment

Rear View Of R290 Refrigerator

The control is located in the control box at the rear of
the unit. Never turn the knob more than one dial

number and always allow eight hours for temperature
stabilization before making any additional adjustments.

To adjust for colder temperatures, turn the knob clockwise.
For warmer temperatures, turn the knob counter­clockwise. Turn the knob fully counter-clockwise to turn the
refrigeration system off.

14 Part Number: 9294045 08/15

Section 3 Operation

FREEZERS

After the unit is connected to power it will automatically
begin operating. With the doors closed, the temperature
of the cabinet should reach 0°F (-18°C) on freezers in about
one hour. The electronic temperature control constantly
monitors box temperature as well as evaporator coil
temperature to maintain consistent product temperatures.
As an added energy-saving feature, the electronic controller
will switch the evaporator fan motor on and off with the
compressor and condenser fan motor.

At initial start-up or anytime power is disconnected, then
reconnected to the unit, the control will delay all operations
for a short time (up to 10 minutes.) While in this delay
period, the control initializes the control parameters and
confirms that the temperature sensors and circuits are
operational.

During normal operation the evaporator fan may cycle
and/or pulse independently of the compressor. Consult
the service manual or contact Technical Support at
1-844-724-CARE if you are unsure of the proper
function.

Important Note

After initializing, the control will immediately enter a
DEFROST mode. The compressor and condenser fan as
well as the evaporator fan will remain off until initial defrost
is complete. This initial defrost cycle may take up to 15
minutes to complete, at which time the freezing cycle will
begin.

Whenever the freezer is plugged in, and the control has
completed initializing including the initial defrost cycle
(see above), the electronic temperature control will cycle
the compressor, evaporator fan motor, and condenser fan
motor to maintain box temperature at the control setting.

Freezer Automatic Defrost

The control also monitors compressor total running time
and will enter a defrost cycle after total compressor running
time is greater than five hours since the last defrost cycle
OR if evaporator coil temperature drops below -34°F (-37°C)
(indicating excessive frost on the coil).

Freezer Manual Defrost

If a manual defrost is desired, simply unplug the unit for
several seconds, then plug unit back in. This will cause the
control to re-initialize and then enter a defrost cycle.

When the control enters the defrost mode, whether manual
or automatic, it switches off the evaporator fan motor,
compressor and condenser fan motor, and switches on the
defrost heater to warm the evaporator coil and melt all frost
accumulated during the previous refrigeration cycle. The
control will continue the defrost cycle for a MINIMUM of
eight minutes and a MAXIMUM of 30 minutes depending

on the amount of frost accumulated on the evaporator coil.

After the defrost cycle is complete, the control returns
to a normal refrigeration cycle, however the evaporator
fan motor will not switch on for two minutes AFTER
the compressor and condenser fan motor have begun
operating.

Electronic Temperature Control Location & Adjustment

Never turn the knob more than one dial number and
always allow eight hours for temperature stabilization
before making any additional adjustments. The control

is located in the control box at the rear of the unit. It is
factory set at mid-range to maintain about -3°F (-18°C) box
temperature. To adjust for colder temperatures, turn the
knob clockwise. For warmer temperatures, turn the knob
counter-clockwise. Turn the knob fully counter-clockwise to
turn the refrigeration system off.

Part Number: 9294045 08/15 15

Operation Section 3

EVAPORATOR FAN OPERATION

Cooling Cycle Defrost Cycle

Compressor OnCompressor

Off

Evap Fan Evap Fan Evap Fan

Compressor

Off

R404A

Refrigerators

R290

Refrigerators

Freezer On Off Off

On On On

On Cycles

On 3-Min

Off 3Min

On

16 Part Number: 9294045 08/15

Section 4

Maintenance

DANGER

It is the responsibility of the equipment owner to
perform a Personal Protective Equipment Hazard
Assessment to ensure adequate protection during
maintenance procedures.

DANGER

Failure to disconnect the power at the main power
supply disconnect could result in serious injury or death.
The power switch DOES NOT disconnect all incoming
power.

DANGER

Disconnect electric power at the main power disconnect
for all equipment being serviced. Observe correct
polarity of incoming line voltage. Incorrect polarity can
lead to erratic operation.

Warning)

n

Never use sharp objects or tools to remove ice or frost.
Do not use mechanical devices or other means to
accelerate the defrosting process.

Cleaning and Sanitizing Procedures

Caution

,

Maintenance and servicing work other than cleaning as
described in this manual must be done by an authorized
service personnel.

GENERAL

Warning

n

When using cleaning fluids or chemicals, rubber gloves
and eye protection (and/or face shield) must be worn.

You are responsible for maintaining the equipment
in accordance with the instructions in this manual.
Maintenance procedures are not covered by the warranty.

Maintenance Daily Weekly Monthly

Interior X X X

Gasket X X X X

Exterior X X X

Drain X X X

Condenser Coil X X X

Casters X X X

Part Number: 9294045 08/15 17

After Prolonged

Shutdown

At Start-Up

Maintenance Section 4

INTERIOR CLEANING

Notice

When cleaning interior and exterior of unit, care should
be taken to avoid the front power switch and the rear
power cord. Keep water and/or cleaning solutions away
from these parts.

Notice

Never use a high-pressure water jet for cleaning or hose
down or flood interior or exterior of units with water. Do
not use power cleaning equipment, steel wool, scrapers
or wire brushes on stainless steel or painted surfaces.

The interior can be cleaned using soap and warm water. If
this isn’t sufficient, try ammonia and water or a nonabrasive
liquid cleaner.

EXTERIOR CLEANING

Notice

Never use an acid based cleaning solution on exterior
panels! Many food products have an acidic content,
which can deteriorate the finish. Be sure to clean the
stainless steel surfaces of ALL food products.

Clean the area around the unit as often as necessary to
maintain cleanliness and efficient operation.

Wipe gasket and surfaces with a damp cloth rinsed in water
to remove dust and dirt from the outside of the unit. Always
rub with the “grain” of the stainless steel to avoid marring
the finish. If a greasy residue persists, use a damp cloth
rinsed in a mild dish soap and water solution. Wipe dry with
a clean, soft cloth.

Never use steel wool or abrasive pads for cleaning. Never
use chlorinated, citrus based or abrasive cleaners.

Stainless steel exterior panels have a clear coating that
is stain resistant and easy to clean. Products containing
abrasives will damage the coating and scratch the panels.
Daily cleaning may be followed by an application of
stainless steel cleaner which will eliminate water spotting
and fingerprints. Early signs 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 steel.

18 Part Number: 9294045 08/15

Section 4 Maintenance

DRAIN

Each unit has a drain located inside the unit that removes
the condensation from the evaporator coil and routes it
to an external condensate evaporator pan. Each drain can
become loose or disconnected during normal use. If you
notice water accumulation on the inside of the unit, be sure
the drain tube is connected to the evaporator drain pan.
If water is collecting underneath the unit, make sure the
end of the drain tube is in the condensate evaporator. The
leveling of the unit is important as the units are designed to
drain properly when level. Be sure all drain lines are free of
obstructions.

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 monthly. If
conditions are such that the condenser is totally blocked
in a month, 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.

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.

Door Adjustment

If the door needs lowering at the handle, use a 5/16” (8mm)
wrench to loosen the hinge screws and install a spacer
outside of the hinge. Tighten the screws.

If the door needs to be higher at the handle, use a 5/16”
(8mm) wrench to loosen the hinge screws and install a
spacer inside of the hinge. Tighten the screws.

CASTERS

Wipe casters with a damp cloth monthly to prevent
corrosion.

PREVENTING BLOWER COIL CORROSION

To help prevent corrosion of the blower coil, store all acidic
items, such as pickles and tomatoes, in seal-able containers.
Immediately wipe up all spills.

FIELD INSTALLATION

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.

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Maintenance Section 4

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20 Part Number: 9294045 08/15

Section 5

Troubleshooting

Problem -> Cause -> Correction Chart

Problem Cause Correction

Cabinet not

running

Condensing
unit runs for

long periods or

continuously

Cabinet

temperature is too

high

Cabinet is noisy Loose part(s). Locate and tighten loose part(s).

Fuse blown or circuit breaker tripped. Replace fuse or reset circuit breaker.

Power cord unplugged. Plug in power cord.

Thermostat set too high. Set thermostat to lower temperature.

Main power switch turned off. Turn main power switch on.

Cabinet in defrost cycle.

(Freezer models)

Excessive amount of warm product placed in

cabinet.

Prolonged door openings or door(s) ajar. Make sure door(s) are closed when not in use. Avoid

Door gasket(s) not sealing properly. Check gasket condition. Adjust door or replace gasket if

Dirty condenser coil. Clean the condenser coil.

Evaporator coil iced over. Turn unit off and allow coil to defrost.

Thermostat set too high. Set thermostat to lower temperature.

Poor air circulation in cabinet. Re-arrange product to allow proper air circulation.

Exterior thermometer is out of calibration. Re-calibrate thermometer.

Excessive amount of warm product placed in

cabinet.

Prolonged door openings or door(s) ajar. Make sure door(s) are closed when not in use.

Dirty condenser coil. Clean the condenser coil.

Evaporator coil iced over. Turn unit off and allow coil to defrost.

Allow adequate time for product to cool down.

Allow adequate time for product to cool down.

Wait for defrost cycle to finish.

prolonged door openings.

necessary.

Make sure thermostat is not set too cold.

Also, check gasket condition.

Avoid prolonged door openings.

Make sure thermostat is not set too cold.

Also, check gasket condition.

Refrigerator is

freezing product

Compressor will

not start

Thermostat is set too low. Set thermostat to higher temperature.

Dirty condenser coil. Clean the condenser coil.

Not enough cabinet clearance for proper

refrigeration system operation.

Low voltage to cabinet. Check and correct incoming voltage to cabinet.

Move cabinet or make other adjustments to gain proper

cabinet clearances.

Part Number: 9294045 08/15 21

Troubleshooting Section 5

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22 Part Number: 9294045 08/15

DELFIELD

980 SOUTH ISABELLA ROAD, MOUNT PLEASANT, MI 48858

800-733-8821

WWW.DELFIELD.COM

Every new piece of Manitowoc Foodservice equipment comes with KitchenCare™ and you choose the level of service that meets
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Part Number: 9294045 08/15