Proaster THCR-03 Operation Manual

Document No. : THCR03-M02
Revision No : Rev. 02
Date : 2011.2.28

Manufacturer / Seller :
Taehwan Automation Industry Co., Ltd

0

1. General Information
(1) Purpose
(2) Features

2. Safety Regulations
(1) General Safety Regulations
(2)-1 Safety Label
(2)-2 Safety device

3. Installation
(1) Carriage
(2) Preparation for installation
(3) Installation

4. Use of the product
(1) General Information
(2) Components
(3) How to Roast

P 3

P 4
P 5

P 5, 6

P 6
P 7

P 7, 8

P 8

P 9~11

P 12~15

5. Cleaning and Maintenance
(1) How to clean – Procedure
(2) Maintenance – Disassembly
(3) After cleaning
(4) Poor Management Example
(5) Trouble Shooting

6. Disposal information
(1) Disposal instructions

7. List of replacement parts

8. Product warranty and A/S
<Reference > Equipment maintenance

P 15

P 16~19

P 20

P 20, 21

P 21

P 22

P 22

P 23, 24

P 25, 26

1

• Place your manual close to the machine for your easy access.

• Read the manual before starting the operation.

• Wear safety gloves to prevent from injuries.

• Do not self-repair.

• Start and stop the machine only after giving it enough time to heat and cool
down.

• Do not touch the hot surface of the machine.

(1) Purpose

• This coffee roaster is manufactured as an commercial roaster to roast coffee
beans.

• This roaster is manufactured for indoor use (Using the machine outdoors can
cause roasting failure, troubles, damages, accidents or injuries)

• different use of the machine (cooking grains, foods, etc.) is prohibited.

• Review safety regulations carefully before you use the coffee roaster.

* NOTICE: Warranty is not valid in case of any damages caused by the
followings:

- Inappropriate use of the product

- Self disassembly or remodeling

- Repairs done by unauthorized personnel

- Use of different type of power or gas

(2) Features

• The product uses radiation and how-air flowing for coffee roasting.

• Designed to maximize heat efficiency for quick roasting up to 15 minutes
faster, preserving the unique flavor and aroma of the beans.

• It realizes its own taste and aroma from the origin by controlling air with the
damper control

• Strong blower allows to complete cooling in 2~3 minutes.

• The safety system automatically shuts the gas supply if the temperature
reaches Set temperature for anti-overheating system.

3

2

(1) General Safety Regulations

1) Burns and injury

- Do not touch the hot surface, handle, or pipes.

- Be cautious about injuries from the moving part include bearings and motors.

2) Fire

- Do not put any foreign objects in the machine

- Do not place any unnecessary flammable material, cloth, paper, or other
accessories near the machine

- Do not repair or disassemble the machine while you are operating the machine.
(shut off electricity and gas supply for maintenance or cleaning )

3) Electricity and gas

- Do not touch the power cable with wet hands to prevent from electric shock

- Make sure that you keep power cable and gas hose away from the hot surface of
the machine.

- Close the gas valve, switch off the power at the back and unplug the power cord
after finishing the operation

- Check gas leakage regularly with soapy water before and after use

4) Cleaning and general care

-Avoid the environment with high humidity. Always follow the disassembling or
cleaning process in the manual. Clean the machine regularly to ensure trouble –
free functioning.

5) Damages
Warranty is not valid damages caused by the followings:

- Inappropriate use

- Damage caused by self disassembly, repair, manipulation

- Use of the wrong voltage or gas pressure

- Breakdown from insufficient cleaning and general care

* Taehwan Automation IND is not be responsible for damages caused by the
result of not following safety regulations

4

2

(2)-1 Safety mark

1) Electric Shock
Turn off the power to avoid any electric
shock or burns before using

2) Moving parts
This label is to warn of its moving parts. Use
the safety cover to avoid any injuries. Always
turn off the power before starting any
Maintenance

3) Burns
This label is to warn possible burns. Do not
touch the hot surface of the machine

4) Fire hazard
This label is to warn of Fire hazard. Especially,
watch out for short circuit or gas leakage,
and flammable objects near the product

(2)-2 Safety device

1) Safety gear cover : the safety cover is attached for user’s safety against the moving
pulley and bearings

- Put the gear cover down before you start the operation

- Make sure that the machine is cooled down before you open and perform maintenance

5

2

2) Emergency Stop Switch

- This button is used to prevent exposure to heat and electricity in case of emergency

- Do not stop the drum or blower when the machine is overheated. Doing so may
cause a fire or breakdown (turn off the gas supply with gas knob only)

3) Anti-Overheating device

- Once roasting temperature reaches the preset temperature, the gas supply is cut off
to avoid overheating automatically

- Do not adjust or reset the temperature above the originally pre-programmed
temperature.

4) Overflowing voltage protection system

- Power shuts off in the event of electrical malfunctions (short circuit, etc.)

5) Fire extinguishing safety system : safety device prevents overheating and
automatically shuts off gas when the power gets cut off

6) Gas Alarm*: You must install the gas leakage alarm by contacting your gas
company

3

(1) Carriage

1) Package

- For exported machines : Remove nails from the wooden container and take out
slats and boards. Please recycle packaging materials in accordance with your
country’s regulations.

- Please confirm that the roaster unit, filter cyclone, instruction manual, and tool kit
have been included.

2) How to carry

- Weight: about 200 kg

- Method: use a forklift

- Otherwise, six people may move it using a belt sling

- Be careful when placing machine on table. Be sure to keep a close, firm hold on the
bottom part of the machine.

6

3

(2) Preparation for installation

1) Preparation

1)-1 Electricity
This machine is designed to be connected to a standard wall socket
Install regarding your country’s voltage system
* Use the transformer as needed.

1)-2 Gas pressure
The machine was manufactured using low pressure gas. Install according to the
requirements of your gas system. Use gas leakage alarm for your safety

1)-3 Ventilation
For the best roasting condition, make the exhaust pipe as short as possible.
In case of using ventilation duct, adjust exhaust strength with the extra damper.

(3) Installation

1) Installation

- The machine is for indoor use. (using outdoor can cause troubles or roasting failure)

- Make sure that you install the machine where has a good ventilation system.

- Poor ventilation can affect quality and evenness of roasting.

- Table: must be able to bear the listed weight. Use a table with wheels for
convenience when cleaning.

- Exhaust: exhaust condition (length of vent pipe, moisture etc.) can affect roasting
results.

- For your safety and optimal roasting, do not place the machine any closer than
20cm from a wall or window. Avoid moisture (do not install the machine near a sink,
espresso machine, etc.)

7

2) POWER

-Power connection: plug power cord only into wall sockets with correct voltage

-Power requirements are listed on the machine’s label

-AC 230V (1PH) 60Hz 3.5A 820kw

2)-1 Supply condition

Gas pressure: Low pressure for home use. Follow proper specifications for gas supply.
Gas pressure varies with region/location. Please contact your local gas supply company.

2)-2 How to connect

- Electricity: Manufactured for general wall sockets

- Gas: inquired gas supply hook-up by your gas supply company. Always follow proper

gas supply procedures.

4

(1) General Info

1) Operator must have roasting experience and trained by specialized roasting institute.

2) Before operating machine
Check if the machine is plugged in the wall socket and the power switch
is ON.

- Do not let touch power cord or surface of the machine when it is hot.

- Check the ventilation.

- For trouble-free roasting, always make sure the chaff drawer, pipe and cyclone are
emptied and clean.

8

4104114

(2) Components

Damper

Air Control Bar

Timer

Gas Knob

Controls the amount and speed of hot air coming
into the drum

“0” close < “10” open

1) Control the amount of heat inside the drum

2) Discharge smoke and chaff out of the drum during
roasting

3) Control the aroma during roasting

Equipment to select Exhaust(roasting) /cooling
mode

1) Right : Discharging mode when “10” is marked
(Cooling 0% Discharging 100%)

2) Left : Cooling mode when “0”is marked (Cooling 100%
Discharging 0%)

Equipment to program pre-heat time or roasting
time

The upper number shows the current time and the one
below shows set time
How to set: Press ◀ to move the cursor and ▲ ▼ to
increase / decrease numbers
Complete the setting by pressing MD button

To control heating power during roasting
Control the heat supply observing flame and gas
gauge

(control the heat observing Flame / Gas Gauge /
Temperature change)

Inverter

Ignition

Reset Button

Equipment to control exhaust displacement

Press ‘ENT ‘ then move the digit you would like to change .
Press ◀ to move the number set ▲ ▼ to increase /
decrease
Complete your setting by pressing ENT button
* Warning, cooling power could be lacked when you set
below 40

to Reset ignition starter automatically

Press reset button when the red light is on due to full of air in the
gas pipe, which make the ignition not working
※ Repeat as needed to remove the air inside the gas supply pipe

9

* Note: Emergency stop button must be pulled out to operate the machine

4

(3) How to Roast – Roasting level

has various colors depending on the origin,
freshness, altitude, environment condition

Sweet aroma but it does not have enough
tasty substances to brew *(yellow bean)

Sour taste. The chaff starts to be peeled off .
Cinnamon color

Called American roast. Good for tasting fresh
sour taste. Initial extracting stage. Brown
color

Sour taste, shows unique character from the
origin. the body gets developed, Brown color

Sour, sweet, bitter tastes are all balanced .
Heavy body. Dark brown color

Less sour taste and more sweet and bitter
taste. Heavier body . Very dark brown color
with some oils on surface . Espresso standard.

Shining surface. Bitter taste with lighter body .
Dark brown color

Surface of the beans are covered with oil . It
tastes like charcoal

12

4

(3)-1 How to Roast – Check-points

1) Fresh beans

- Be aware of the moisture content and the quality of the beans
* Dried or old beans will not give you the best result.

2) Preheating

To prevent from coffee dust scale accumulation or roasting failure, make sure
you have enough preheating time to make your roaster is completely dried
and evenly heated.

3) Environment

- Weather: when it is Cold, Hot and humid or Before Raining or snow, have

longer heating time using lower heat for the start

- Ventilation: Roasting is a combustion process requiring adequate amounts of

oxygen. Please check ventilation conditions.

4) Exhaust

- Cleaning: Poor cleaning can cause poor cooling due to exhaust pipe

blockage and decreased air flowing. Poor cleaning can change the taste and
aroma. Please make sure the blower, pipes.

5) Roasting level

- Roast considering the final use (home brew, hand drip, espresso, etc.)

ATTENTION

① IN CASE OF IGNITION FAILURE : turn on and off OPERATION button

and then press the reset switch (in easy access door). In about 15
minutes, the sparker starts the ignition.

② Make sure that the sparker contacts right on the top of gas nozzle

(about 3~5mm close)

③ Make sure that the flame sensor touches the flame(about 5~7mm

close)

13

4

(3)-2 How to roast

Preparation Preheat Roasting

1) Connect the power cable. Turn on the switch of circuit breaker power ON

2) OPEN the gas valve

3) Open the damper to 10, turn the air control to the right (exhaust mode)

4) OPERATION button - > BURNER button
(for the safety, ignition starts in 15 minutes after pressing the operation button).

* If ignition fails, check if the red light is on the reset box .
In that case, restart burner and press the reset button. Once the air comes out
completely, the ignition will start soon. Repeat if necessary.

Circuit breaker in control box

Exhaust mode

5) After reheating at Damper 10/low flame (about 30% of the gas gauge’s maximum

firing capacity)

6) After 110 degrees is exceeded, adjust to moderate flame (50% or more) and

close the damper to 1

7) Put beans in the hopper before the temperature reaches the appropriate

temperature

8) Press time button after putting in beans when the temperature reaches around

200 degrees (Start timing)
Adjust the heating power to 70~80% once the temperature starts increasing

9) 1stcrack (yellow bean)

Tighten the damper approximately one space, increase pressure a little, and raise the
endothermic reaction to maximum before 1stcrack.

10)1stcrack

Slowly open the damper from 2 to 8 an maintain the heat at 50%~80%

11) A point right after 1stcrack
Adjust the heat by 15%~30% and close the damper (3 ~ 6)

12) Just before discharging (empty just a little before reaching the desired temperature!!)

Discharge After use

Damper 10  discharge lower damper at cooling mode (left)  press the BURNER
button and close  after confirming the timer, press the TIME button and close

* Do not put your hand in before fully cooling down!

* After cooling is completed, check the cooling fan!!

Exhaust modeCooling mode

13) Cooling machine (Idling)
Fully open the damper till the temperature decreases below 100 degrees

(Damper10), Press stop button to turn off after idling with the vent closed ->

OPERATION BUTTON(STOP) ->TURN OFF THE CONTROL BOX

14) After roasting!! Important!!.

Use vacuum cleaner to clean the cyclone, inside the cooling unit, grounds (waste)
drawer, hopper, and confirmation door
(There is a charge incurred when service is requested due to neglect in cleaning and
maintenance

14

4

(3)-3 How to roast – After roasting

Cleaning is the most important factor to uniformly ensure against
malfunctions and the quality taste and aroma of your coffee.

5

(1)Cleaning method –before you start

-Tool kit, mask, cotton gloves, vacuum cleaner, beans for cleaning
(used to remove dust after cleaning)

-Tool kit is for use when installing

-When cleaning machine, always wear mask and gloves to avoid

accidental injury

-Refer to manual when cleaning, and follow the directions carefully.

15

5

(2) Cleaning and Maintenance – Disassembly before cleaning

Manually turn the
clamp connecting
the damper and
the u-shaped pipe
and remove.

Remove the pipe
from the body by
manually moving
the pipe back and
forth.

Use a Phillips
screwdriver to
remove the 4 screws
connecting the
damper and drum.

!!Warning!! Do not remove the lower
bolts.

(Doing so creates difficulties when
reassembling)

Removal is possible without removing
the bolts.

Grasp the damper
and pull it out in
the direction of the
arrows (as shown)
to remove.

16

5

(2) Cleaning- Separating the parts before cleaning Removing the
piping connecting the cyclone

Remove pipe
from the
cyclone

Use the 10-inch
spanner
included in
product
packaging to
loosen the 4
hexagonal
bolts.

Use the 8­inch wrench
to loosen the
parts
connecting
the pipe

Before
loosening

After
loosening

17

5

(2) Cleaning and maintenance

Cleaning hopper

Remove sediment inside
the solo hopper
with a brush then use
vacuum

Cleaner

Cleaning inspection door

Remove sediment inside the
solo hopper
with a brush then use vacuum

Cleaner

Clean once in every

100 roasting

Clean once in every
100 roasting

Important!!

Cleaning damper

Adjust damper gradation at 10 to fully open the damper and
Remove sediment inside the solo cooler pipe with a brush .

Pipe connected between
hopper and damper

Remove sediment inside
the solo hopper
with a brush then use
vacuum

Cleaner

Clean once in

every 100 roasting

Clean once in every 100 roasting

18

5

Important!!

Cleaning pipe

Bend the brush and use it
to thoroughly clean deep
inside the pipe

It is difficult to perform a
thorough cleaning inside
the pipe if cleaning has
been neglected for a long
time resulting in the
forming of hardened
sediment layers.

Once every 100 uses

Inside the cooler

Requires extra care
because the cooling tunnel
in the cooler directly
affects the blower.

Use a brush to remove
coffee grounds (waste) and
dust. Then do a thorough
‘touch-up’ cleaning using
the vacuum cleaner.

Once every 100 uses

Important!!

Cleaning the blower

Use the brush to scrub in
back and forth motions to
remove dust. Please
observe good maintenance
to continue achieving
maximum performance of
exhaust and cooling
functions.

Once every 100 uses

Cleaning the cyclone

Use the brush to scrub
back and forth or in
circular motions to
remove dust.

Once every 100 uses.

Cleaning

inside

the

lower damper

It is very important to
clean the lower
damper because good
exhaust circulation is
essential to the
roasting process.

Once every 100

uses

19

(3) After cleaning

After cleaning, remove any dust around the machine with the
vacuum cleaner. To remove dust inside the machine, use spare
coffee beans in a no-load rotation without turning on heat.

and roasting failure. Company will not assume responsibility for
accidents, operation failure or roasting problems caused by user’s
neglect to clean machine.

(4) Poor management

Neglected maintenance of cooler
Neglected maintenance of the cooler causes
moisture and dusts inside the cooler resulting
poor performance of blower and cooler causing
charcoal taste or aroma

Neglected maintenance of lower damper

Neglected maintenance of lower damper causing
the low damper bar not being turned to 0
resulting poor taste as well as poor cooling
performance

Neglected maintenance of
damper

Neglected maintenance of
the damper causes moisture
and dusts inside the damper
resulting the damper not
being rotated and controlled

Inappropriate management of blower

Neglected cleaning and maintenance of preheat
and cooling units and pipes cause moisture and
dust worsening cooling performance

Poor exhaust results when damper is fully opened

20

(5) Trouble Shooting

Ignition/Flame

Cause Actions to take

① After turning the burner switch ON, confirm that sparks are flying at a
high intensity from the nozzle of the high pressure rod (maintain a space

Location of the high

pressure sensor

of 3~5mm)
② After igniting, confirm that the sparks are reaching the heat sensor
(maintain a space of 5~7mm)
③ Confirm that there is no movement of the high pressure, sensor,
breakage to the insulator, grazing or disconnection of wires, etc.

Temperature display

error

Flame

Flying sparks

Noise

Cause Actions to take

Noise in the drum

vibrations, noise

There must be no damage, breakage, dislocation or presence of foreign
matter in the sensor, and no errors due to malfunction of the
temperature adjuster

① Scale accumulation on the upper cap of the nozzle
② Distortion in shape of nozzle hole due to over-aggressive cleaning
(LPG Ф0.65, LNG 1.0)
③Confirm that gas type is identical with gas type indicated on the name
plate

① Occurs due to insufficient oxygen supply because exhaust damper is
set too low, etc.
②There must be no debris such as coffee grounds or other waste in the
exhaust conduit path

① contact between drum and front plate (maintain a space of

1.5~2.0mm)
②Insufficient access of grease to the bearings in the drum

① Check if volt and nut are loosen
② Disassemble service pipe and discharge pipe of exhaust and

cooling bro and part and dust accumulated in the inside of case
like wing

③ Check oil in the gear head of drive motor and tension of V belt

21

6

(1) Disposal

1. Box container and wrapping materials should be recycled or disposed of in
accordance with the rules set by your country.

2. The machine and power cord may be recycled. Please contact recycling center.

3. Machine must not be disposed of together with regular trash. Dispose of
machine according to the recycling method established for electrical products.

-Detailed information about recycling is available at recycling center and store of
purchase.

4. Dispose of waste (grounds) from coffee beans in accordance with your country’s
regulations for food disposal or environmental policy.

7

Detail Durability

Heater None

Nozzle

Belt

Bearing

Sensor Ф2.3 x 20ℓ x 1/8”x 3.0m 2ea 2~3years

Exchange period for machines applies to new machines only. Exchange
period may vary depending on how the machine was handled or
conditions related to the machine and the environment of its use.

Exchange policy does not apply to used machines.

Nozzle Ass’y 1set

A type 87” 1ea

UCFC208-EN2 1ea
UCFC207-EN2 lea

10years

3~5years

5years

22

8

1) Damage caused by natural disasters

2) Damage resulting from user negligence

• Inappropriate use

• Using machine for purposes other than those intended by user’s

Intentional negligence, remodeling, damage from impact, use of excessive force

while

operating, disassembly, private repairs

• Use of supplies other than those made by manufacturer, improper cleaning,
negligence in cleaning

• Failure to follow safety and operation warnings

3) Installing additional parts to machine’s interior or piping, use in an improper operation
environment

4) Reinstalling following simple cleaning or initial installation when damage has been
caused by

user’s failure to clean machine

5) Consumable goods replacement

23

Model name :

Used period :

Problem
description:

Contact name :

Phone :

Model THCR-03 Capacity 800g ~ 5kg

Power Single 230V(60HZ)

Consu

ming

voltag

e

Size

800w

600*1300*1540
m/m

Gas

consumption

Power

Max. LNG 15,200kcal/h LPG 1.3kg/h

Motor : AC / 220V / 200W / 60HZ
Gearhead : Decreased rate 1/10

Blower : AC / 220V / 1/4hp / 60HZ

Gas

pressure

Low pressure
(For home use)

24

1. Front plate, hinged door

① Maintain a distance of about 0.5m/m between

the front plate and hinged door, and adjust so that

coffee grounds do not leak out
②The fixed bolt and washer on the front plate must

be the same make as the original ones.

Friction between drum and front plate results in

noise and malfunctioning of the drum

2. Distance between front plate and drum

How to adjust the front plate and drum

The appropriate distance

between the front plate and

drum is 1.2m/m

Closure of the space between

the drum and front plate may

occur due to heat expansion.

If noise coming from the drum

during operation is severe, it

means the space between

them is too narrow.

Warning: Any adjustment must be performed while power is OFF. If you encounter

difficulties, please request service from the manufacturer.

① After inserting the range bolt into the hole of the front plate’s A stopper, turn the

stopper to the left enough to loosen it.

② Loosen the fixed bolt of the B stopper (the entire bearing unit) just a little.

●To reduce distance from the drum hold the B stopper firmly in place with one hand

while turning the drum to the left with the other hand to make narrower

(Or, you can hold the drum in place with one hand and turn the B stopper to narrow

the space.

●To increase distance from the drum, hold the B stopper in place and turn the drum to

the right.

③ After adjustment is completed, tighten the fixed bolt on the B stopper, then

tighten the A stopper.

25

3. Tension of V-Belt

① Hold the V-Belt down and adjust tension of A to

5~10mm

(Replace the Belt if it’s broken or stretched)

② Adjust its tension by adjusting nut of motor fixing belt

4. DRUM rotation

① In case if DRUM is not properly rotating / operating

- Loosen the V-Belt and turn the drum with your hand to see if it rotates smoothly

-Hold down operating s/w to check the rotation condition of the Motor

26