Blakeslee D-8 Installation Manual

D-8 & DD-8
DISHWASHERS

INSTALLATION &

OPERATION

(01-13)

ELECTRICAL WARNINGS

THIS MANUAL HAS BEEN PREPARED FOR PERSONNEL QUALIFIED TO INSTALL
ELECTRICAL EQUIPMENT, WHO SHOULD PERFORM THE INITIAL FIELD STARTUP AND
ADJUSTMENTS OF THE EQUIPMENT COVERED BY THIS MANUAL.

READ THIS MANUAL THOROUGHLY BEFORE OPERATING, INSTALLING OR
PERFORMING MAINTENANCE ON THE EQUIPMENT.

WARNING: Failure to follow all the instructions in this manual can

cause property damage, injury or death.

WARNING: Improper installation, adjustment, alteration, service or

maintenance can cause property damage, injury or death.

WARNING: Electrical connections should be performed only by a certied

professional.

WARNING: Electrical and grounding connections must comply with the

applicable portions of the National Electric Code and/or all local electric codes.
Failure to comply with this procedure can cause property damage, injury or death.

WARNING: Before connecting the unit to the electrical supply, verify that

the electrical and grounding connections comply with the applicable portions of
the National Electric Code and/or all local electrical codes. Failure to comply with
this procedure can cause property damage, injury or death.

WARNING: Before connecting the unit to the electrical supply, verify that

the electrical connection agrees with the specications on the data plate. Failure to
comply with this procedure can cause property damage, injury or death.

WARNING: UL73 Grounding Instructions: This appliance must be connected

to a grounded, metal, permanent wiring system; or an equipment-grounding
conductor must be run with the circuit conductors and be connected to the
equipment-grounding terminal or lead on the appliance. Failure to comply with this
procedure can cause property damage, injury or death.

WARNING: Appliances equipped with a exible electric supply cord are

provided with a three-prong grounding plug. It is imperative that this plug be
connected into a properly grounded three-prong receptacle. Failure to comply with
this procedure can cause property damage, injury or death.

WARNING: If the receptacle is not the proper grounding type, contact an

electrician. Do not remove the grounding prong from the plug. Failure to comply
with this procedure can cause property damage, injury or death.

— 2 —

WARNING: Before performing any service that involves electrical

connection or disconnection and/or exposure to electrical components, always
perform the Electrical LOCKOUT/TAGOUT Procedure. Disconnect all circuits. Failure
to comply with this procedure can cause property damage, injury or death.

WARNING: Before removing any sheet metal panels, always perform the

Electrical LOCKOUT/TAGOUT Procedure. Be sure all circuits are disconnected.
Failure to comply with this procedure can cause property damage, injury or death.

WARNING: Do not operate this equipment without properly placing and

securing all covers and access panels. Failure to comply with this procedure can
cause property damage, injury or death.

WARNING: Do not use or store gasoline or other ammable vapors or

liquids in the vicinity of this or any other appliance. Failure to comply can cause
property damage, injury or death.

WARNING: In the event of a power failure, do not attempt to operate this

appliance. Failure to comply can cause property damage, injury or death.

ELECTRICAL LOCKOUT/TAGOUT PROCEDURE

WARNING

Before performing any service that involves electrical
connection or disconnection and/or exposure to
electrical components, always follow the Electrical
LOCKOUT/TAGOUT Procedure. Disconnect all circuits.
Failure to comply with this procedure can cause
property damage, injury or death.

The Electrical LOCKOUT/TAGOUT Procedure is used to
protect personnel working on an electrical appliance.
Before performing any maintenance or service that
requires exposure to electrical components, follow these
steps:

1. In electrical box, place appliance circuit breaker into
OFF position.

2. Place a lock or other device on electrical box cover
to prevent someone from placing circuit breaker ON.

3. Place a tag on electrical box cover to indicate that
appliance has been disconnected for service and
power should not be restored until tag is removed
by maintenance personnel.

4. Disconnect appliance power cord from electrical
outlet.

5. Place a tag on the cord to indicate that unit has
been disconnected for service and power should
not be restored until tag is removed by maintenance
personnel.

— 3 —

TABLE OF CONTENTS

GENERAL DESCRIPTION ..............................................................................................................................................................................................................5

Model D-8 ................................................................................................................................................................................................................................5

Model DD-8.............................................................................................................................................................................................................................5

Door Safety Switch ...............................................................................................................................................................................................................5

Pump Motor ............................................................................................................................................................................................................................5

Control Circuit ........................................................................................................................................................................................................................5

Vacuum Breaker ....................................................................................................................................................................................................................5

Heaters......................................................................................................................................................................................................................................5

Automatic Wash Tank Fill ...................................................................................................................................................................................................5

Final Rinse Boosters (Optional) ........................................................................................................................................................................................5

Heat and Voltage Field Changeover ..............................................................................................................................................................................5

INSTALLATION ..................................................................................................................................................................................................................................6

Visual Inspection ...................................................................................................................................................................................................................6

Unpacking the Dishwasher ...............................................................................................................................................................................................6

Leveling the Dishwasher ....................................................................................................................................................................................................6

Plumbing the Dishwasher .................................................................................................................................................................................................6

Dish Tables ..............................................................................................................................................................................................................................6

Electrical Connections ........................................................................................................................................................................................................7

Pump Motor Rotation .........................................................................................................................................................................................................8

Fill/Rinse ...................................................................................................................................................................................................................................8

Drains ........................................................................................................................................................................................................................................8

Electric Heater ........................................................................................................................................................................................................................9

Gas Heater ...............................................................................................................................................................................................................................9

Pilot Lighting ....................................................................................................................................................................................................................... 11

Pilot Flame Adjustment ................................................................................................................................................................................................... 12

Gas Vents............................................................................................................................................................................................................................... 12

Steam Injected Heaters ................................................................................................................................................................................................... 12

Steam Coil Heater .............................................................................................................................................................................................................. 12

Electrical Detergent and Rinse Additive Injector Connections ......................................................................................................................... 12

OPERATION ....................................................................................................................................................................................................................................14

Preparing the Dishwasher for Use ............................................................................................................................................................................... 14

Automatic Tank Fill (Standard) ...................................................................................................................................................................................... 14

Wash Cycle Selector .......................................................................................................................................................................................................... 14

Automatic Start (Optional) ............................................................................................................................................................................................. 15

Manual Start (Standard) .................................................................................................................................................................................................. 15

Tank Selection (Optional on DD-8 only) .................................................................................................................................................................... 15

Soiled Dishtable Operation ............................................................................................................................................................................................ 15

Loading the Dishwasher ................................................................................................................................................................................................. 15

Operating the Dishwasher ............................................................................................................................................................................................. 16

Shutdown and Cleaning ................................................................................................................................................................................................. 16

Maintenance ................................................................................................................................................................................................................................. 18

Motor...................................................................................................................................................................................................................................... 18

Pump ...................................................................................................................................................................................................................................... 18

Doors/Hood ......................................................................................................................................................................................................................... 18

Line Strainers ....................................................................................................................................................................................................................... 18

Wash Arms............................................................................................................................................................................................................................18

Final Rinse Arms and Nozzles ........................................................................................................................................................................................ 18

Pump Motor Overload Protection ............................................................................................................................................................................... 19

Water Treatment................................................................................................................................................................................................................. 19

Troubleshooting.................................................................................................................................................................................................................20

SCHEMATIC .................................................................................................................................................................................................................................... 22

WIRING DIAGRAM ....................................................................................................................................................................................................................... 24

WARRANTY .................................................................................................................................................................................................................................... 26

— 4 —

GENERAL DESCRIPTION

Model D-8

The Model D-8 door-type commercial dishwasher has a
three-sided door or hood that is spring counterbalanced
and opens as one unit to provide access to the machine. The
machine can be easily modied from a straight- through to
a corner unit by simply moving one track rail. If the unit is
to be used in a corner, the right side should be positioned
toward the wall to allow access to the controls.

Model DD-8

The Model DD-8 door-type commercial dishwasher has a
three-sided door or hood that is spring counterbalanced
and opens as one unit to provide access to the machine.
The unit has two wash tanks and can wash two dish racks
at a time. The Model DD-8 can be specied as a straight­through or corner unit when ordering. The side to be
used in the corner must be designated so the controls
are accessible.

Door Safety Switch

All models are equipped with a door safety switch. The
machine will not operate when the door is open. If the
door is accidently opened during a cycle, the machine will
stop operating. Some models may be equipped with an
optional door safety lock which prevents the door from
opening during a cycle.

On manual start units, the door must be closed and the
operator must press the start button to initiate a cycle.

On machines equipped with the optional automatic
start feature, the operator need only close the door to
start a cycle.

Control Circuit

All units are supplied with a 110 VAC control circuit.

Vacuum Breaker

The ll line has a vacuum breaker installed in it to prevent
any backow of water into the fresh water supply line. If
a negative pressure develops in the supply line, the loss
of pressure permits a check valve inside the breaker to
drop, sealing the orice. At the same time, a vent opens
admitting air to the system to break the vacuum.

Heaters

Wash tank water is heated by electricity, steam coil, steam
injection or gas. Electrically heated machines are available
in 208, 240, 440, or 480 VAC only.

Automatic Wash Tank Fill

All machines are supplied with automatic wash tank ll.

Final Rinse Boosters (Optional)

Machines can be equipped with an optional built-in
electric booster, remote mounted booster or remote
mounted steam booster. These boosters are designed
to raise the rinse water temperature from 140°F to
180F°-185°F.

Heat and Voltage Field Changeover

Pump Motor

The unit is equipped with a 1½ HP motor. Model D-8 has
one motor; Model DD-8 has two motors.

When changing either to or from single- to three-phase
electrical power, the wash pump motor must be changed.
The motor overload relays must also be changed. See
parts description in the separate Illustrated Parts List and
wiring diagram.

When changing from 115 volts to 208, 230, 440 or 480 VACs,
single- or three-phase, a transformer must be added. The
motor overload relays must also be changed.

— 5 —

INSTALLATION

Visual Inspection

Before installing the unit, inspect the shipping container
and machine for damage. A damaged container may
indicate there is damage to the machine. If there is
damage to both the container and machine, do not throw
away the container. The dishwasher has been inspected
and packed at the factory and is expected to arrive in
an undamaged condition. However, rough handling by
carriers or others may result in damage to the unit while
in transit. If such a situation occurs, do not return the unit
to Blakeslee; instead, contact the carrier and ask them to
send a representative to the site to inspect the damage
to the unit and to complete an inspection report. You
must contact the carrier within 48 hours of receiving the
machine. Also, contact the dealer where you purchased
the unit.

Unpacking the Dishwasher

Excessive gap
on left:
Raise left front
leg and door will
shift to the left

Excessive gap
on right:
Raise right front
leg and door will
shift to the right.

34-1/4" ± 3/4"

Leveling the Dishwasher

Once the machine has been removed from the container,
make sure that there are no parts missing from the
machine. This may not be obvious at rst. If an item is
missing, contact Blakeslee immediately to have the missing
item shipped to you.

Leveling the Dishwasher

The dishwasher must be level to operate correctly. This
allows the hood to open and close properly and ensures
the best results while washing. The unit comes with
adjustable bullet feet, which can be turned using a pair of
channel locks or by hand if the unit can be raised safely.
Ensure that the unit is level from side to side and from front
to back before making any service connections. Minor
adjustments to the feet may be necessary to eliminate
any door gaps once the unit has been leveled.

Plumbing the Dishwasher

All plumbing connections must comply with all applicable
local, state, and national plumbing codes. The installing
plumber must ush the incoming water line thoroughly
prior to connecting it to the dishwasher. Any valves that
are fouled as a result of foreign matter left in the water
line, and any expenses resulting from this fouling, are not
covered under the manufacturer’s warranty.

Various connections are labeled “180° Water”, “Steam”,
“Gas”, etc. Only connect the corresponding service to
these connections.

Dish Tables

Dish tables must be lipped into and slope slightly toward
the dishwasher. Use silicone sealant between the dish
table and the dishwasher. Secure with stainless steel
truss head screws.

— 6 —

Washer

Hood

Gap

Table

Truss head screws,

lockwashers and nuts

S/S

Electrical Connections

WARNING

Before performing any service that involves electrical
connection or disconnection and/or exposure to
electrical components, always perform the Electrical
LOCKOUT/TAGOUT Procedure. Disconnect all circuits.
Failure to comply with this procedure can cause
property damage, injury or death.

Refer to the unit’s data plate before making any
connections.

Attach Table to Tank

DISHTABLE DIMENSION INFORMATION

1"

22" MIN.

LEFT SIDE TABLE
Right side table (not shown) –

dimensions are same but reversed

6"

23-3/8"

4" MAX.

Notch for
Hood Handle

POWER REQUIREMENT

MOD.

VOLTS

BRANCH CIRCUIT PROTECTION REQUIREMENT

SUPPLY CIRCUIT CONDUCTORS (MINIMUM AMPACITY)

W-2-20878

SER. NO.

PH. HZ. AMP. H P.

CIRCUIT-BREAKERS (MAZIMUM AMPACITY)

TIME-DELAY FUSES (MAZIMUM AMPACITY)

Any connections must correspond to the information
specied on the data plate. A fused disconnect switch
or circuit breaker (not supplied) MUST be installed in
the electrical supply line for the dishwasher. This service
connection must meet all local and national electrical code
requirements. All connections are made at one common
location in the control box. The control box cover is hinged
and can be opened by removing six (6) ¼ -20 screws and
swinging the cover to the right.

Thermostat –
Turn screw clockwise to
increase temperature;
Turn counterclockwise to
decrease temperature

Incoming
power
connection

4" MAX.

25-3/4"

1"

4" MAX.

FRONT TABLE
(Corner installation only)

26-3/4" MIN.

Thermostat & Power Connection Locations

Note: If the unit has the optional electrical booster,

refer to section on Boosters for separate electrical
connection information.

— 7 —

Pump Motor Rotation

WARNING

Before performing any service that involves electrical
connection or disconnection and/or exposure to
electrical components, always perform the Electrical
LOCKOUT/TAGOUT Procedure. Disconnect all circuits.
Failure to comply with this procedure can cause
property damage, injury or death.

The pump motor(s) must rotate in a clockwise direction
as viewed from the front of the dishwasher. An arrow
on the side of the pump motor(s) indicates the correct
motor direction.

Connect a ¾" pipe to the line strainer.

For a piping run greater than 20 ft, increase the pipe size
to insure proper ow pressure at the dishwasher.

Line Strainer

Line Strainer

Motor rotation
arrow

Pump Motor Rotation

This rotation was checked at the factory but must be
rechecked before putting the dishwasher into service.

Note: There may be more than one pump motor

depending on the model.

Fill/Rinse

Final Rinse water is used to ll the dishwasher’s wash
tank(s). The water supply must have a water temperature
of 180°-195° F with a dynamic ow pressure of 15 to 25
PSI at the dishwasher.

Note: If the dishwasher has been supplied with either a

machine mounted booster or a remote booster, the
water supply temperature must be 140° F minimum.

Drains

Drain connections must comply with all local and national
code requirements.

Connect the tank drain(s) to the building drain connection
using 2” pipe.

Drain Valve Handle

Drain line
to sewer

Drain Installation

If the incoming water supply pressure is below the required
15 PSI, an optional pressure booster pump will be required.
If the incoming water supply pressure is greater than 25
PSI, a pressure reducing valve (optional) will be needed.

The unit requires 72 gal/hr of 140°F water.

If a grease trap is required, it must be installed below the
drain line and have a capacity of 40 gallons per minute.

— 8 —

Electric Heater

WARNING

Before performing any service that involves electrical
connection or disconnection and/or exposure to
electrical components, always perform the Electrical
LOCKOUT/TAGOUT Procedure. Disconnect all circuits.
Failure to comply with this procedure can cause
property damage, injury or death.

Electrically heated machines are available in 208, 240,
or 440-480 volts, single- or three-phase only. They are
prewired at the factory and only one common connection
is required. Use L1 and L2 for single-phase units and L1,
L2 and L3 for three-phase units.

Additional instructions are located inside the control
box. Make sure the wire size is adequate to carry the
amperage load.

The temperature is controlled by the thermostat located
in the control box.

Thermostat –
Turn screw clockwise to
increase temperature;
Turn counterclockwise to
decrease temperature

Incoming
power
connection

Gas Heater

Before making a gas connection, verify the gas type. A tag
is attached to the gas valve that will indicate the correct
gas type (L.P. or Natural) to be supplied to the unit.

Note: If the tag is missing, the gas type can be determined

by inspecting the gas valve. A Natural gas valve will
have a pressure regulator where a L.P. gas valve will
not.

WARNING

Instructions to be followed in the event the operator
smells gas or otherwise detects a gas leak must be
posted in a prominent location. This information
can be obtained from the local gas company or gas
supplier.

WARNING

All connections must be sealed with a joint compound
suitable for the gas being used and all connections
must be tested with a solution of soapy water before
lighting any pilots.

Never use matches, candles, or any other ignition
source to check for leaks. If gas odors are detected,
shut o the gas supply to the appliance at the main
shuto valve and immediately contact the local gas
company or an authorized service agency for service.

Thermostat & Power Connection Locations

The natural gas valve has a pressure regulator
for minor adjustments to the gas pressure. L.P.
gas pressure must be adjusted by the customer’s
regulator.

— 9 —