The procedures and precautions contained in this manual are understood to apply to the machinery
only when it is used in the prescribed manner. If the machinery is used other than in the recommended
manner, the operator will be responsible for his/her own safety and for the safety of the other persons
who may be involved.
The information in this manual has been prepared to assist the operator to understand, maintain, and
operate the mixer. In order to prevent accidents, read, understand and follow all the precautions and
warnings contained in this manual before installation or operating for the fi rst time. This manual must be
studied to obtain a clear understanding of the mixer and its capabilities.
1.1 SAFETY GUIDELINES.
Ensure suffi cient precautions are observed during manual handling of the mixer particularly when mov-
ing into position on installation. Reference must be made to manual handling regulations. The mixer
weights are given in Table 1.
Do not hose or pressure clean this appliance. It is vital to adhere to the cleaning instructions
•
detailed in section 14 of this manual.
Do not remove any covers or loosen any fi ttings whilst the machine is operating.
•
Ensure this manual is kept in an easily accessible place for future reference near the mixer.
•
All operators must be trained in the safe operation of the mixer and attachments.
•
Ensure that the power supply cord has been unplugged before attempting to service or move
•
the mixer.
Rotating machinery and electricity are potentially hazardous and may cause injury if suffi cient
•
precautions are not taken prior to operating or servicing the machine.
Always have your mixer and attachments regularly serviced; at least twice a year, depending on
•
frequency of use.
When mixing products that develop dust care must be taken. Mix the ingredients using the
•
BLEND facility until the dust is eliminated.
Exposure to dust (including fl our) may be harmful to health causing rhinitis (running noses),
•
watering eyes and possibly occupational asthma.
1.2 WARNING SYMBOLS.
To identify the safety messages in this manual, the following symbols have been used:
The "Warning" symbol is found primarily where the corresponding information is
important for the safe use of the machinery.
The electrical hazard symbol is used when there are risks of an electrical nature. Prior to
servicing the machinery, always disconnect the power cable from the mains supply.
– 3 –
1.3 LIABILITY.
Installations and repairs which are not carried out by Authorised technicians or the use of other than
original spare parts, and any technical alterations to the machine, may affect the warranty set out in the
standard conditions of sale.
2.0 FOREWORD.
Hobart reserves the right to alter the design of their products without prior notice. Whilst every effort is
made to ensure this publication refl ects the latest design, the Company cannot guarantee full compli-
ance. Take pride in your HS10/HS20 Mixer - keep it clean and in good mechanical and electrical condition.
3.0 GENERAL INFORMATION.
The information and instructions contained in this manual may not cover all details or variations in the
equipment, nor provide for every eventuality to arise with installation, operation, or maintenance. If additional information is required, please contact your local Hobart offi ce.
The HS10/HS20 Mixers are designed to mix food products as detailed on the specifi cation chart (Sec-
tion 12.0, page 10).
The Hobart 10-litre/20-litre mixers are a bench-type mixer which features a manual bowl lift.
The Hobart 20-litre mixer is optional with a #12 attachment hub. With the use of special agitators, a 10litre bowl may be used on the HS20 mixer.
The machines are rated to operate on the electrical supplies shown in Table 1, page 14.
The Mixer is fi tted with a "no volt release" safety feature to prevent automatic restarting after a supply failure or
disconnection from the mains. The bowl and the guard are interlocked so that when either is not in their correct
operating positions, the mixer will not work. The standard mixer is delivered with guard, bowl and agitators.
4.0 CARING FOR OUR ENVIRONMENT.
4.1 PACKAGING MATERIAL.
The pallet and protective packing material have been selected from
materials that are environmentally friendly for disposal or can normally
be recycled. Instead of throwing them away, please ensure they are recycled.
4.2 DISPOSAL OF YOUR OLD APPLIANCE.
Old appliances contain materials that can be recycled. Please contact your local waste collection centre; scrap merchant or local Hobart offi ce about potential recycling schemes.
– 4 –
5.0 SAFETY INSTRUCTIONS.
A FULLY TRAINED AND COMPETENT PERSON MUST ONLY USE THE MIXER.
The following instructions must be observed when using the mixer.
Note: The mixer must only be used for the purpose it was designed and inline with the supplied operating instructions.
5.1 DUST HAZARD.
In order to minimise any dust hazard follow the instructions detailed below.
When mixing ingredients care must be taken to avoid the inhalation of dust particles e.g. fl our. Refer-
ence should be made to product supplier's data sheets to ensure adequate precautions/protections are
taken.
Items such as fl our must be added in such a manner to avoid dust particles being dispersed into the
local atmosphere.
Carefully slit the bag whilst holding in the lower part of the bowl. When mixing dry ingredient use the
lowest speed to minimise dust emission. Mix the ingredients in the bowl using the lowest speed until the
risk of producing any dust is eliminated.
Fit suitable dust extraction equipment.
5.2 NEVER.
Operate the mixer or attachments if a fault develops or the mixer is unsafe.
•
Wear loose clothing.
•
Attempt to reach into the bowl when mixing.
•
Access rotating parts.
•
Fit the agitator to the mixer without a bowl in place.
•
Leave the agitator on machine without the bowl being fi tted.
•
Use excessive force when operating which could affect the stability of the mixer.
•
Operate the mixer if parts are disassembled.
•
Over ride the safety switches fi tted to the mixer.
•
Open the guard to stop machine.
•
Use the bowl lift to stop machine.
•
Use the mixer in an unsafe condition.
•
– 5 –
•
Clean the mixer with scouring powder or a scouring pad.
•
Clean aluminium agitators in dishwashers.
•
Inhale mixing ingredient dust particles.
5.3 ALWAYS.
• Use the mixer in a well-lit area.
• Ensure the bowl, agitator and guard are correctly fi tted to the mixer.
• Disconnect the mains electricity supply before cleaning the mixer.
• Clean the mixer daily.
• Stop mixer before adding more ingredients.
• Use the stop button to stop machine.
• Clean the bowl and agitators after use.
• Clean the mixer using mild soap and water.
• Service the mixer at least twice a year depending on the frequency of use.
• Use the mixer as intended and inline with the operating instructions.
6.0 USING THE MIXER.
6.1 OPERATING FOR THE FIRST TIME.
Prior to installation, test the electrical service to assure that it agrees with the specifi cations on the ma-
chine data plate.
Place the mixer on a suitable sturdy level surface. There should be adequate space around the mixer
for the user to operate the controls and to install and remove bowls.
Holes are located in the base to permanently secure the mixer, although this is not necessary in normal
installations.
This food mixer is only for professional use by suitably trained persons. Ensure
operators have read and understood this manual and have received adequate training. Moving
agitator in bowl. Keep hands, clothing, and utensils out while in operation. Do not use without
interlocked guard.
– 6 –
Attachment Hub
Thumb Screw
– 7 –
Plug
Fig. 2 (20 Liter Mixer)
7.0 CONTROLS
Push-button STAR T and STOP buttons control power to the mixer.
•
The Bowl Guard must be in place and closed or the mixer will not operate.
•
If the Bowl Support is not all the way up, the mixer will not operate.
•
STARTS
STARTS
MIXER
MIXER
STOPS
STOPS
MIXER
MIXER
SPEED
SPEED
SELECTOR
SELECTOR
Fig. 3
TIME
TIME
SELECTOR
SELECTOR
The TIMER is used in conjunction with the S
TAR T button for timed mixing operations and will stop the
mixer when the desired time has elapsed.
For Non-Timed Mixing — Set the timer on H
PEED SELECTOR (Fig. 3) is used to change speeds. To change speeds, turn the SPEED SELECTOR to
The S
OLD and use the STOP button to turn the mixer off.
the desired speed. Speed can be set when mixer is on or off.
LENDThe slowest speed to incorporate ingredients.
B
Speed 1 (Low) For light dough, heavy batters, or potatoes.
Speed 2 (Medium) For cake batters or some whipping operations.
Speed 3 (Medium-High) For light work, such as whipping cream, beating eggs, or mixing thin
batters.
Speed 4 (High) This speed is for maximum and accelerated air incorporation into light
batches.
The B
OWL LIFT HANDLE (Fig. 1, page 7) is used to raise and lower the bowl. To raise the bowl, rotate the
handle upward; rotating the handle downward lowers the bowl.
9.0BOWL PLACEMENT
The bowl must be installed before the agitator. To install the
bowl, fully lower the bowl support (Fig. 4). Position the bowl so two large
holes on bowl tabs are above the bowl pins on the bowl support.
10 Liter Mixer - Lower the bowl onto the bowl pins then turn clockwise until
stopped in locked position.
20 Liter Mixer - Lower the bowl onto the bowl pins then turn counter clockwise until stopped in locked
position.
– 8 –
Fig. 4
10.0AGITATOR
To install an agitator (Fig. 1, page 7), 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.
Fig. 5Fig. 5
11.0BOWL GUARD
Bowl guard must be in position and closed in order to mix. If bowl guard is opened during the mixing,
mixer will stop.
11.1REMOVE BOWL GUARD
Lower the bowl support and remove agitator before removing bowl guard. Hold bowl guard with both
hands and pull downward gently to release bowl guard from retaining groove.
11.2 INSTALL BOWL GUARD
Hold bowl guard with both hands and gently push upward until bowl guard is latched onto the retaining
groove and can be rotated freely.
Fig. 6
– 9 –
12.0Mixing Bowl Capacity Chart - HS10/HS20
Capacity of Bowl (Qts. Liquid)
ModelHS10HS20
Motor (HP).45.45
Small Bowls Available as Extras
Overall Space Required (Floor)13 21/32W X
Egg Whites (pt.)D1 pt.2 pts.
Mashed Potatoes (lbs.)B8 lbs.15 lbs.
Mayonnaise (Qts. of Oil)B or D4 qts.9 lbs.
Meringue (Qty. of Water)D3/4 pt.1 1/2 pts.
Waffl e or Hot Cake Batter (qt.)B4 qts.8 qts.
Whipped Cream (qt.)D2 qts.4 qts.
Bake Shop Materials
Cake, Angel Food (8-10 oz. cake) (lb.)B7 1/2 lbs.15 lbs.
Cake, Box or Slab or Layer (lb.)B10 lbs.20 lbs.
Cake, Cup (doz.)B18 doz.30 lbs.
Cake, Pound (lb.)B15 lbs.21 lbs.
Cake, Sponge (lb.)B6 lbs.12 lbs.
Cookies, Sugar (lbs.)B9 lbs.15 lbs.
Dough, Bread or Roll (Lt-Med) 60% AR § (lb.)ED12 lbs.**25 lbs.**
Dough, Heavy Bread 55% AR § (lb.)ED5 lbs.**10 lbs.**
Dough, Pie (lb.)B12 lbs.18 lbs.
Dough, Thin Pizza 40% AR (max mix time 5 min.) §ED4 lbs.** 9 lbs.**
Dough, Medium Pizza 50% AR §ED5 lbs.**10 lbs.**
Dough, Thick Pizza 60% AR §ED8 lbs.**20 lbs.**
Dough, Raised Donut 65% AR (lb.)ED4 1/2 + lbs.9 + lbs.
Dough, Whole Wheat 70% ARED8 lbs.**20 lbs.**
Eggs & Sugar for Sponge Cake (lb.)B4 lbs.8 lbs.
Icing, Fondant (lb.)B6 lbs.12 lbs.
Icing, Marshmallow (lb.)B1 lbs.2 lbs.
Shortening & Sugar, Creamed (lb.)B8 lbs.16 lbs.
Pasta, Basic Egg Noodle (max mix time 5 min.) (lb.)ED3 lbs.5 lbs.
ABBREVIATIONS - AGITATORS
SUITABLE FOR OPERATION
B - Flat Beater
D - Wire Whip
ED - Dough Arm
** 1st Speed
+ 2nd Speed
NOTE: % AR (% Absorption Ratio)
= Water weight divided by fl our weight X 100%.
Capacity depends on moisture content of dough.
Above capacity based on 12% fl our moisture and
o
F water temperature.
70
§ If high gluten fl our is used, reduce above dough
batch size by 10%.
– 10 –
13.0AGITATORS
The B Flat Beater is a multi-purpose agitator used for mashing potatoes or
other vegetables, and mixing cakes, batters or icings. It is also used in industrial
applications for any product requiring a creaming or rubbing action and uniform
dispersion of ingredients. Use fi rst speed for starting most operations; medium
speed for fi nishing.
The D Wire Whip is designed for maximum blending of air into light products.
Uses include: whipping cream, beating egg whites, mixing very light icings, meringues and all similar applications. The D Wire Whip is most commonly used in
third and fourth speed.
The ED Dough Hook is used for mixing most bread, roll and pizza dough, which
require folding, and stretching action for best development. These agitators are
suitable for use on all yeast raised doughs and commonly used in fi rst or second
speed.
14.0 CLEANING.
Cleaning New Mixer Bowls and Accessories - Before using the fi rst time, thor-
oughly wash new mixer bowls and agitators (beaters, whips and dough hooks). Wash in hot
water and a mild detergent solution, rinsing with either a mild soda or vinegar solution, and
thoroughly rinse with clear water. Also follow this cleaning procedure for bowls and agitators
before whipping egg whites or whole eggs.
14.1 CLEANING AFTER USE.
After use, clean the mixing bowl and agitators with hot water, using a suitable non-abrasive detergent
and soft bristle brush. (Flushing the bowl with hot water immediately after use will ease the cleaning).
Note: Do not clean the aluminium agitators in a dishwasher.
The mixer should be thoroughly cleaned daily. Do not use a hose to clean the mixer; it should be
washed with a clean, damp cloth. The base allows ample room for cleaning under the mixer. For
cleaning the Bowl Guard, refer to Section 11.1.
– 11 –
15.0 INSTALLATION AND COMMISSIONING.
Fig. 7 (HS10)Fig. 7 (HS10)
– 12 –
Fig. 8 (HS20)
Overall Dimensions:
A 10-litre bowl and agitator are available.
A variety of attachments, agitators, and accessories are available. These are described in Section 13.0
(page 11) of this manual.
– 13 –
Table 1. Technical Information.
DescriptionUnitsHS10HS20
Mixer powerkW (hp)0.34 (0.45)0.56 (0.75)
Maximum speed of rotating part (50Hz)rpm25003700
Nominal electrical supply 1 phVolts200-240200-240
Full load current at above voltage 1 phAmps2.95.5
Locked rotor current at above voltage 1 ph Amps1012
Recommended fuse size 230v/1 ph/50HzAmps108
Minimum ambient temperature
Maximum ambient temperature
Planetary grease- - -light coat on gearslight coat on gears
Transmission case lubricating grease capacityKg (lbs)- - - 0.55 (1.21)
Mixer weight (Bowl Included)Kg (lbs)85.7 (189)97.1 (214)
Bowl weight (10 litre)Kg (lbs)1.41 (3.1)- - Bowl weight (20 litre)Kg (lbs)- - -3.3 (7.2)
Agitator weight (10 litre beater)Kg (lbs)0.95 (2.1)- - Agitator weight (20 litre beater)Kg (lbs)- - -1.0 (2.3)
Noise leveldB (A)less than70##less than70##
o
C00
o
C4040
Shipping weight (Bowl included)kg (Lbs)92.5 (204)136.5 (301)
Shipping dimensions (carton)LxWxH cm62.8 x 57.8 x 87.381.3 x 78.7 x 106.7
Storage conditions. Temperature and humidity.oC, % RH+5 to +38, 85+5 to +38, 85
Class of applianceClass 1#Class 1#
Enclosure IP ratingIP32IP32
# Refer to Section 18.0
## In accordance with EN-ISO 12001:1996.
16.0 UNPACKING AND HANDLING.
Wherever possible the food mixer should be transported to the installation position
in the packaging provided to avoid damage. Do not use a sharp knife to cut into the
box as damage to the machine may occur. Check for possible shipping damage. If
the unit is found to be damaged, save the packaging material and contact your
nearest Hobart sales offi ce.
The HS10/HS20 mixer is a heavy object and must be correctly handled and lifted
to avoid personal injury. Refer to Table 1 for weights and dimensions. For UK installations refer
to the Manual Handling Operations Regulations 1992 and HSE guidance notes for manual handling.
With the machine in the vicinity of its fi nal position, remove from outer carton. Remove mounting bolts
under skid attached to mixer base. Remove mixer from skid forking from the side of unit. When moving unit, always fork from side of unit.
– 14 –
Care must be taken during this operation to ensure:
a.
All required safety measures are taken to ensure correct lifting and handling to avoid risk of
injury through dropping, falling and tilting.
No damage occurs to the machine, which could impair the normal operation.
b.
17.0 LOCATION.
The mixer is not suitable for outdoor installation and must not be installed where
a water jet could be used for cleaning. The mixer must only be operated by trained staff and
must be installed in an area where the use and maintenance is restricted to trained personnel.
The mixer must be installed on a horizontal fl at surface level to a minimum of 1mm in 1 metre side to
side and front to back. Select a suitable fl at level surface that can support the weight of the mixer and
bowl contents when full (refer to Table 1 for weights and dimensions). In areas where stability may be
an issue, the machine should be secured in position.
Ensure there is suffi cient space around the mixer for the user to operate the controls and to install
and remove bowls. The area above and to the rear side of the mixer should allow the top and bottom
covers to be removed for routine maintenance and servicing. Servicing may be more diffi cult because
of reduced clearances and you should always check that equipment specifi cations permit the close
proximity of other equipment. Refer to Figs. 7 and 8, pages 12 and 13 for the overall dimensions of the
mixer and the clearance required to accommodate the bowl.
18.0 ELECTRICAL INSTALLATION.
The electrical installation of the mixer must conform to the local electricity board regulations.
When installed in the United Kingdom the installation must be in accordance with the current edition of the IEE Regulations for electrical equipment in buildings and must conform to
the requirements of the Electricity at work act.
A competent person must carry out the electrical installation.
The technical data shown in Table 1, page 14 details the electrical requirements for the mixer. Ensure
that the electrical power supply agrees with the machine specifi cation prior to connection.
The mixer is equipped with a three-wire power supply cord ready for installation of an appropriate
grounding-type attachment plug. The plug and its mating receptacle must be properly grounded. Contact an electrician. Provide proper fuse or circuit breaker protection.
19.0 OPERATOR TRAINING.
Take time to explain the correct operation and cleaning of the HS10/HS20 mixer to the users referring
to this manual. Leave this manual with the operator and explain that it is important to use it for further
reference.
– 15 –
20.0 MIXER MAINTENANCE.
A
A
A Hobart trained and competent person should carry out servicing.
Do not remove any covers or loosen any fi ttings while the mixer is operating. Ensure the
electrical supply has been isolated before attempting to service or move the mixer.
Unplug machine power cord before beginning any maintenance procedures.
20.1 LUBRICATION.
20.2 SLIDEWAYS.
The slideways (Fig. 9) should be lubricated approximately twice a year. To reach these areas, fully
lower the bowl support. Wipe a thin coat of Lubriplate 630AA on the bowl pad area of the bowl supports
and on each slideway. Refer to the recommended spare parts section for Lubriplate grease part number.
djusting Screw
djusting Screw
Slideway
Slideway
Fig. 9
20.3 PLANETARY SEAL.
Seal requires occasional lubrication.
20.4 MEASURE AND ADJUST AGITATOR CLEARANCE.
A proper clearance between the bowl and agitator is important since an excessive clearance will affect
mixer performance and since contact between the bowl and agitator will damage these components.
Therefore, agitator clearance should be checked periodically. Proper agitator clearance between the
bowl and B fl at agitator, at the bottom of the bowl, is 9.5 mm (.0375 in.).
To check clearance, pour enough fl our into the bowl to cover the bottom of the bowl. With the bowl
raised and locked in the mixing position, make sure that agitator does not contact the bowl, then briefl y
operate the mixer at the lowest speed. Turn off the mixer, disconnect the electrical power supply, and
measure the depth of fl our at several points around the bottom of the bowl where the agitator has
traced a path.
If adjustment is needed, use the adjusting screw, as shown in Fig. 9, to adjust the bowl up or down.
– 16 –
20.5 INTERLOCK SAFETY SYSTEM.
Regular inspection of the mixer safety system is necessary to check the operation of the bowl, guard
and bowl support interlock switches. This must be performed no less than once a year.
A spare parts manual is available on request from Hobart Spare Parts Distribution Centre. For continued safe and reliable operation of this mixer, it is recommended that servicing is only carried out by
Hobart trained service personnel.
21.0 FAULT FINDING.
SymptomsPossible Causes
Mixer will not start.Branch circuit protector is in open position - check fuse or
disconnect switch.
Mixer is overloaded.
Wire cage is not in the closed position.
Bowl is not in up (mix) position.
Timer is not properly set to HOLD or not away from OFF
position.
Agitator touches bowl.Improper agitator clearance - see Mixer Maintenance for
Adjustments.
Stop screw is not adjusted properly - see Mixer Maintenance for Adjustments.
Agitator is not installed properly.
Planetary seal squeaks.Seal requires occasional lubrication - see Maintenance.
Hobart trained service technicians strategically located throughout the UK are prepared to give you fast,
effi cient and reliable service. Protect your investment by having a Hobart inspection contract, which as-
sures the continued, effi cient operation of your Hobart machines, spares and accessories. For disposal
of mixer, contact Hobart Service Centre for return details.