Hobart D300 Users Manual F 18816 I&O Mixer

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2015-02-05

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IN
S
TR
U
C
TI

D300 MIXER

O
N
S

D300 MIXERS
ML - 104421, 104423

701 S. RIDGE AVENUE
TROY, OHIO 45374-0001
937 332-3000

www.hobartcorp.com

FORM 18816 Rev. A (Feb. 2000)

Model D300 Mixer

–2–

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The D300 Mixer
(30 quart) features a 3/4 horsepower motor, a timer, and a #12 attachment hub as standard
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equipment. 1234567890123456789012345678901212345678901234567890123456789012123456789012
The standard 30 quart mixer bowl can be equipped with a variety of agitators. A 20 quart bowl,
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bowl adapter,
and agitators are available options on the D300.
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Bowl Guard1234567890123456789012345678901212345678901234567890123456789012123456789012
is standard equipment on all D300 models.
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Programmable Timer Controller is optional on D300 models.

Installation, Operation, and Care of
MODEL D300 MIXERS
SAVE THESE INSTRUCTIONS

GENERAL

These mixers can be ordered with deluxe finish, which includes a chrome plated transmission case, base,
bowl support, and pedestal.
A variety of attachments and accessories are available for all mixers. These are described in a separate
Use and Applications Handbook which is furnished with each mixer.

INSTALLATION
UNPACKING
Immediately after unpacking the mixer, check for possible shipping damage. If this machine is found to
be damaged, save the packaging material and contact the carrier within 15 days of delivery.
Prior to installation, test the electrical service to assure that it agrees with the specifications on the machine
data plate.
LOCATION
Place the mixer in its operating location. There should be adequate space around the mixer for the user
to operate the controls and install and remove bowls.
A Deck Plate Kit is available from Hobart and holes are provided in the base for permanent bolting to the
floor, although this is not necessary in normal installations. Four plastic plugs are supplied with the mixer
to plug these holes if they are not used.

–3–

ELECTRICAL CONNECTION
WARNING: ELECTRICAL AND GROUNDING CONNECTION MUST COMPLY WITH THE
APPLICABLE PORTION OF THE NATIONAL ELECTRICAL CODE AND/OR OTHER LOCAL
ELECTRICAL CODES.
WARNING: DISCONNECT ELECTRICAL POWER SUPPLY AND PLACE A TAG AT THE
DISCONNECT SWITCH INDICATING THAT YOU ARE WORKING ON THE CIRCUIT.
ELECTRICAL DATA
Models

Volts / Hz / Ph Rated Amps

Circuit Size Fuse Size * 60°C Copper Circuit Size Circuit Breaker ** 60°C Copper
(Amps)
(Amps)
Wire Size
(Amps)
(Amps)
Wire Size

D300

115 / 60 / 1

10.2

D300

200 / 60 / 1

5.6

D300

230 / 60 / 1

5.1

D300

200 / 60 / 3

2.1

D300

230 / 60 / 3

2.0

D300

460 / 60 / 3

1.0

* Dual Element
Time-Delay Fuse

** Inverse Time
Circuit Breaker

Circuit Size (Minimum) & Fuse / Circuit Breaker Size (Maximum) compiled in accordance with the National Electrical Code (ANSI/NFPA 70), 1993 Edition.

A hole for 3⁄4" trade size conduit is located at the
bottom of the pedestal (Fig. 1). Make electrical
connections to the pigtail leads per the wiring
diagram supplied with the mixer.

Fig. 1

Check Rotation (Three-Phase Machines Only)
Three-phase machines must be connected so the planetary rotates in the direction of the arrow on the Drip
Cup. To check rotation:
Set the gear shift lever on 1.
Apply power to the mixer, set the Electro-Mechanical Timer on HOLD; or, if equipped with a
Programmable Timer Controller, set it on [ -- : -- ]. With the Bowl Support all the way up, momentarily
run the machine by pushing the START and then STOP buttons.
If rotation is incorrect, DISCONNECT ELECTRICAL POWER SUPPLY and interchange any two of
the incoming power supply leads.
–4–

OPERATION
WARNING: MOVING BEATER IN BOWL, KEEP HANDS, CLOTHING, AND UTENSILS OUT WHILE IN
OPERATION, DO NOT USE WITHOUT INTERLOCKED GUARD.
Every D300 mixer is equipped with either an Electro-Mechanical Timer Control (described at the bottom
of this page) or a Programmable Timer Controller (described on pages 6 – 8). Also, become familiar with
the other operating parts (Fig. 2) and their functions, which are referenced throughout the OPERATION
section (pages 5 – 11).
The Bowl Guard must be in position or the mixer will not operate. Refer to page 10.
If the Bowl Support is not all the way up, the mixer will not operate unless the START button is held in.

Controls
Attachment Hub

Drip Cup
Bowl Guard
Bowl Handle
Agitator
Bowl Lift Handle
Alignment Pin

Bowl Clamp

Bowl

Bowl Support

PL-40132-1

Fig. 2

ELECTRO-MECHANICAL TIMER CONTROLS (when equipped)
Gear Shift Lever

Start Button
Stop Button

The START button is used to start the mixer.
The STOP button is used to stop the mixer.
The TIMER is used in conjunction with the START
button for timed mixing operations and will stop the
mixer when a preset time has elapsed.

Timer

For non-timed mixing — Set the timer on HOLD
and use the STOP button to stop the mixer.
PL-40143-1

Fig. 3

–5–

PROGRAMMABLE TIMER CONTROLLER (when equipped)
At Idle, the timer display [ – – : – – ] shows that no time has been set (Fig. 4).
P2
Key

P1
Key
TIMER CONTROLLER

➜

TIME

SAVE

Save Key
Clear Key

▼

➤

Time Display

➤

▼

Gear
Shift
Lever

➤

M/C
Indicator

M/C

START

STOP

➤

CLEAR

➤

▼

Start
Button

Stop
Button

Knob

STOP MIXER
BEFORE
CHANGING SPEEDS

Fig. 4
Timer Keys

Programming Function (if the mixer is not mixing).

P1
P2
Knob
Save
Clear

Contains up to four preset times. Displays each preset time sequentially.
Contains up to four additional preset times. Displays each preset time sequentially.
Changes the time as indicated by the display.
Replaces the preset time with the indicated time.
Returns to Idle from a programming function.

For Continuous Mixing . . .
START and STOP buttons control mixing operation.
Beginning from the Idle display [ – – : – – ], press START to begin mixing. The M/C
indicator will be lit, and the total mixing time will be indicated (minutes and seconds).
Press STOP when mixing is done; the M/C indicator light goes off; and the Idle display
[ – – : – – ] returns.
Using the Dial Timer to set the Mixing Time . . .
Beginning from the Idle display [ – – : – – ], turn the KNOB to set the mixing time. The
M/C indicator will be lit.
START and STOP buttons control mixing operation.
Press START to begin mixing: The timer will countdown from the set time to [ 00 : 00 ].
If STOP is pressed, both mixing and timer countdown will be interrupted. After
pressing STOP . . . Press START to resume both mixing and timer countdown;
or, press CLEAR to return to the Idle display.
When the timer reaches [ 00 : 00 ] the mixer stops; M/C indicator goes off; a beep tone
sounds for two seconds; and the Idle display [ – – : – – ] returns.
–6–

PROGRAMMABLE TIMER CONTROLLER (when equipped) continued
Using the Preset Keys, P1 or P2, to set the Mixing Time . . .
Each preset key has four time settings. The indicator above the number 1, 2, 3, or 4 and the P1 or P2
indicator light identify which preset time is being displayed. The chart below shows the default settings;
the next page shows how to revise these preset times. The Dial Timer KNOB can be used to adjust the
mixing time if the knob is turned prior to pressing START.
Beginning from the Idle display [ – – : – – ], press P1 or P2 to display the #1 preset mixing
time. ( Pressing P1 or P2 again will display the next preset time, etc.)

P1
-

01:00

-1 -2 3- 4-

Indicators above P1
and 1 indicate the
first preset time
contained in P1.

☛ The Dial Timer KNOB can adjust the time.
START and STOP buttons control mixing operation.
Press START to begin mixing: The timer will countdown from the set time to [ 00 : 00 ].
If STOP is pressed, both mixing and timer countdown will be interrupted. After
pressing STOP . . . Press START to resume both mixing and timer countdown;
or, press CLEAR to return to the Idle display.
When the mixer is stopped, you may perform any appropriate task, such as the
following: Add ingredients, change speed, reset the timer, continue mixing, or unload.
When the timer reaches [ 00 : 00 ] the mixer stops; a beep tone sounds for two seconds;
and the next preset mixing time displays. When the last preset time reaches [ 00 : 00 ],
the P1 or P2 indicator goes off; and the Idle display [ – – : – – ] returns. Repeat from ☛
to complete four preset times.

The timer reverts to the Factory Programmed Preset Times after any power interruption:
Factory Programmed Preset Times
Preset Key

Indicator
1

01:00

02:00

10:00

00:00

02:00

01:00

05:00

03:00

–7–

PROGRAMMABLE TIMER CONTROLLER (when equipped) continued
To Revise the Preset Mixing Times contained in P1 or P2 . . .
Each preset key has four preset time settings. The indicator above the number 1, 2, 3, or 4 and the P1 or
P2 indicator light identify which preset time is being displayed.
Beginning from the Idle display [ – – : – – ], press P1 or P2 to display the #1 preset mixing
time. ( Pressing P1 or P2 again will display the next preset time, etc.)

P1
-

01:00

-1 2- 3- 4-

☞ Turn the KNOB to change the time for the indicated preset.
• Press SAVE to retain the revised time and move to the next preset time.

Indicators above P1
and 1 indicate the
first preset time
contained in P1.

Repeat from ☞ for each preset time (1, 2, 3, and 4 contained in P1 or P2).
Pressing CLEAR will retain the saved times and return to the Idle display [ – – : – – ].

The timer reverts to the Factory Programmed Preset Times after any power interruption:
Factory Programmed Preset Times
Preset Key

Indicator
1

01:00

02:00

10:00

00:00

02:00

01:00

05:00

03:00

–8–

CHANGING SPEEDS
The GEAR SHIFT LEVER is used to change speeds. Always stop the mixer before changing speeds. To
change speeds, push the STOP button, move the gear shift lever to the desired speed, and restart the
mixer by pushing the START button.
Mixer Speeds
Speed 1 (Low) — This speed is for heavy mixtures such as bread dough, heavy batters, and potatoes.
Speed 2 (Medium) — This speed is for light dough which must rise quickly, cake batters, and some
whipping operations.
Speed 3 (High) — This is a fast speed for light work, such as whipping cream, beating eggs, and mixing
thin batters.
BOWL LIFT HANDLE
The BOWL LIFT HANDLE is used to raise and lower the bowl. To raise the bowl, rotate the Handle
downward; to lower the bowl, rotate the Handle upward.
MIXING
This section explains operation of the mixer and how to install bowls, agitators, and attachments. A
separate Use and Applications Handbook is provided with the mixer which contains information on mixing
procedures and outlines specific uses for agitators, attachments, and accessories.
Bowl
New mixer bowls and agitators (beaters, whips, and dough arms) should be thoroughly washed with hot
water and a mild soap solution, rinsed with either a mild soda or vinegar solution, and thoroughly rinsed
with clear water BEFORE being used. This cleaning procedure should also be followed for bowls and
agitators before whipping egg whites or whole eggs.
The bowl must be installed before the agitator.
To install the bowl, fully lower the bowl support. Position the bowl so the alignment bracket on the back
of the bowl is in the bowl retainer on the bowl support and the alignment pins on the front of the bowl support
fit in the holes in the bowl. Lock the bowl in place by rotating the bowl clamps over the ears of the bowl.
If a bowl adapter is required, install it on the bowl support as you would the bowl and then install the bowl
on the adapter.
Agitator
To install an agitator, the bowl must be installed and fully lowered. Place the agitator in the bowl, push
it up on the agitator shaft, and turn it clockwise to seat the shaft pin in the slot of the agitator shank.
To Raise the Bowl While Mixing
To raise the bowl while the agitator is mixing the product (when required by recipe or when using the Bowl
Scraper Attachment): Load ingredients. Close Wire Cage Assembly. Select Low speed. To begin mixing,
press and hold the Start button; then raise the bowl.
–9–

Bowl Guard (Fig. 5)
The Wire Cage Assembly on the Bowl Guard can be rotated out-of-the-way to add ingredients or access
the bowl and agitator.
To rotate the Wire Cage Assembly to the rear . . .
Push the Latch in to release the Centering Pin from the Centering Ramp. Note how the grooves on the
nylon Retainers allow the Wire Cage to ride around the circular Ridge of the planetary Drip Cup. The Wire
Cage can rotate 360°; left or right. When the Wire Cage returns to the front and center position, the
Centering Pin is captured and held by the Centering Ramp, restricting rotation of the Wire Cage until the
Latch is pressed again.
The Wire Cage must be in the front-center position for the mixer to operate.
To remove the Wire Cage Assembly for cleaning . . .
Lower the Bowl. Rotate the Wire Cage to the rear. Remove both Agitator and Bowl. Return the Wire Cage
to the front.
While holding the Wire Cage securely with both hands, use your thumb to push down on the Black Release
Knob. Lower and remove the Wire Cage. Wash it in a sink or dishwasher; rinse with clear water; and dry
with a clean cloth.
The stainless steel Splash Guard can be wiped-off or washed easily with a cloth or sponge and warm
soapy water. Rinse with clear water. Dry with a clean cloth.
To reinstall the Wire Cage Assembly . . .
Hold the Wire Cage so its top ring is positioned around the planetary Drip Cup with the grooves in both
nylon Rear Retainers straddling the Ridge on the Drip Cup. Push-in the Front-Center Retainer until it stays
in and so that it's grooves also straddle the Ridge on the Drip Cup. The Wire Cage is properly assembled
when all three Retainers straddle the Ridge on the Drip Cup in the three opposed locations.
Rotate the Wire Cage out-of-the-way to install or remove the Agitator and Bowl or to add ingredients.
Return the Wire Cage to its front and center position to operate the mixer.
Wire Cage Rotated Left

Latch

Ridge On Drip Cup

Latch
Rear Retainer

Rear Retainers
Ridge on Drip Cup
Wire Cage

Splash Guard

Front-Center Retainer
Centering Ramp

Front-Center
Retainer

Splash Guard
Centering Pin
Wire Cage Front-Center Position

Centering Ramp
Black Release Knob

Centering Pin
Black Release Knob
PL-40071-1

Fig. 5

– 10 –

Attachments
To install an attachment, loosen the attachment hub thumb screw and remove the plug. Insert the
attachment into the attachment hub, making certain that the square shank of the attachment is in the
square driver of the mixer. Secure the attachment by tightening the thumb screw.
Move the gear shift lever to the desired speed. With the bowl support all the way up and the wire cage
in the front-center position, start the mixer to operate the attachment.
The meat and food chopper attachment should be operated in second or third speed. If material in the
cylinder stalls the mixer, push the STOP button at once. DO NOT attempt to restart the mixer in a lower
speed — remove the adjusting ring, knife, plate, and worm and clear any obstruction. THIS ATTACHMENT
MUST NOT BE USED TO CHOP BREAD CRUMBS.
NOTE: Do not use attachment hub while mixing.
Bowl Scraper Attachment
The Mixer Bowl Scraper Attachment (when ordered) is provided with a separate instruction manual
covering its installation, operation, use and care.
CLEANING
WARNING: DISCONNECT ELECTRICAL POWER SUPPLY AND PLACE A TAG AT THE DISCONNECT
SWITCH INDICATING THAT YOU ARE WORKING ON THE CIRCUIT BEFORE BEGINNING ANY
CLEANING PROCEDURE.
The mixer should be thoroughly cleaned daily.
A flat scraper and a brush are furnished to aid in cleaning bowls and agitators. Bowls and agitators should
be removed and cleaned in a sink.
DO NOT use a hose to clean the mixer — it should be washed with a clean damp cloth. The apron may
be removed by loosening the thumb screws.
The base allows ample room for cleaning under the mixer.
The Drip Cup-Splash Guard (which is secured by three screws) should be removed periodically and wiped
clean.
For cleaning the Bowl Guard (including both Wire Cage Assembly and Splash Guard), refer to page 10.

MAINTENANCE
WARNING: DISCONNECT ELECTRICAL POWER SUPPLY AND PLACE A TAG AT THE
DISCONNECT SWITCH INDICATING THAT YOU ARE WORKING ON THE CIRCUIT BEFORE
BEGINNING ANY MAINTENANCE PROCEDURE.
LUBRICATION
Bowl Clamps
The bowl clamp area of the bowl support should be lubricated twice a year. Lightly coat with Lubriplate
630AA (supplied).
– 11 –

Bowl Lift
The bowl lift mechanism should be lubricated twice a year. Loosen the knob and remove the bowl lift
access cover from the rear of the pedestal. Lightly coat moving parts (Fig. 6) with Lubriplate 630AA
(supplied). Replace access cover and tighten knob.
Bowl Lift Slideways
The slideways (Fig. 7) should be lubricated once each month. Remove the apron (secured by two thumb
screws) from the front of the pedestal. Lightly coat both slideways with Lubriplate 630AA (supplied).
Replace the apron and thumbscrews.

Bowl Lift Mechanism

Bowl Lift Slideways
PL-40170-1

PL-40171-1

Fig. 6

Fig. 7

TROUBLESHOOTING
SYMPTOMS

Mixer will not start.

POSSIBLE CAUSES

1. Gear shift lever between gears (not fully engaged).
2. Circuit protector in open position — check fuse or
disconnect switch.
3. Mixer or attachment overloaded.
4. Bowl not all the way up.
5. Wire Cage Assembly is not in the front-center position.

SERVICE
If service is needed on this equipment, contact your local Hobart Service Office.

FORM 18816 Rev. A (Feb. 2000)

– 12 –

PRINTED IN U.S.A.

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