Dehumidifying Dryer SDD
Dehumidifying Dryer SDD
Dehumidifying Dryer SDD
Dehumidifying Dryer
5. Trouble-shooting ........................................................................................ 36
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Table Index
Picture Index
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1. General Description
Please read through this operation manual before using the machine to
prevent damages of the machine or personal injuries.
SDD series dehumidifying dryer combine dehumidifying and drying systems into a
single unit. They have many applications in processing plastic materials, such as
PA, PC, PBT, PET etc. All models feature SD-H honeycomb dehumidifiers with
built-in process heater and insulated drying hopper. Under ideal conditions, it can
provide dehumidified dry air with a dew-point lower than -40℃.
SDD-80U/40H
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1.1 Coding Principle
SDD – xxxU – xxxH – xxx
Option
1.2 Feature
l The SDD dehumidifying dryer use honeycomb dehumidifiers with an
eye-catching semi-integral appearance.
l Each model combines dehumidifying and drying functions into a single
unit.
l Insulated drying hopper features dry air down-blowing and cyclone
exhaust design. This improves drying efficiency and reduces energy
consumption while maintain a steady drying effect.
l The dehumidifying section of the SDD series features two coolers to
ensure a low return air temperature and low dew-point.
l Compact in size for ease of movement and space saving.
l Microprocessor is the standard equipment.
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All service work should be carried out by a person with technical training or
corresponding professional experience. The manual contains instructions for both
handling and servicing. Chapter 6, which contains service instructions intended
for service engineers. Other chapters contain instructions for the daily operator.
Any modifications of the machine must be approved by SHINI in order to avoid
personal injury and damage to machine. We shall not be liable for any damage
caused by unauthorized change of the machine.
Our company provides excellent after-sales service. Should you have any
problem during using the machine, please contact the company or the local
vendor.
Headquarter and Taipei factory:
Tel: (886) 2 2680 9119
Shini Plastics Technologies (Dongguan), Inc:
Tel: (86) 769 8111 6600
Shini Plastics Technologies India Pvt.Ltd.:
Tel: (91) 250 3021 166
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1.3 Technical Specifications
1.3.1 Outline Drawing
SDD-40U/40H~230U/120H SDD-300U/200H~1200U/700H
Note: 1) Plastic materials can be fully dried by drying air with dew-point We reserve the right to change
temperature ≤-20℃. When ambient temperature ≤-25℃ and specifications without prior notice.
relative humidity≤-60%, the drying air dewpoint temp. ≤-40℃.
2) Power:3Ф, 230 / 400 / 460 / 575VAC, 50 / 60Hz.
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1.3.3 Drying Capacity
Table 1-2: Drying Capacity 1
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Table 1-3: Drying Capacity 2
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1.4 Safety Regulations
Warning!
Electrical installation should be done by qualified technician only.
Before connecting to AC Power Source, turn power switch to OFF
position.
While AC power source is connected, make sure specifications and
overload protection rating of the power switch are suitable and reliable.
When the machine is under care or maintenance status, turn both power
switch and automatic operation switch to off.
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repair.
7) Don't manual discharge material inside the hopper while its not or opening
cleaning door while the material is not.
Danger!
High voltage danger!
This label is stuck on the electrical boxes.
Attention!
This label means that this area should be taken care!
Warning!
High temperature, take care of hands!
This label should be stick to the shell of heater.
Attention!
No need for regular inspection because all the electrical parts in the
control unit are fixed tightly!
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1.4.3 Signs and Labels
Working environment
Indoors in a dry environment with max. temperature +45℃ and humidity no more
than 80%.
Do not use the machine
1) If it is with a damaged cord.
2) On a wet floor or when it is exposed to rain to avoid electrical shock.
3) If it has been dropped or damaged until it is checked or fixed by a qualified
serviceman.
4) This equipment works normally in the environment with altitude within
3000m.
5) At least a clearance of 1m surrounding the equipment is required during
operation. Keep this equipment away from flammable sources at least two
meters.
6) Avoid vibration, magnetic disturbance at the operation area.
Fire hazard
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1.5 Exemption Clause
The following statements clarify the responsibilities and regulations born by any
buyer or user who purchases products and accessories from Shini (including
employees and agents).
Shini is exempted from liability for any costs, fees, claims and losses caused by
reasons below:
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2. Structure Characteristics and Working Principle
2.1 Working Principle
Moisture hot air from drying hopper is blown into rotor after flowing through cooler.
Moisture from the air is dried by rotor and is then adsorbed by regeneration
heating air. Two strands of airflow function on the rotor. And with the rotation,
moisture from the air is absorbed and expelled after absorbed regeneration air to
form stable low dew-point air, which is dried and heated to the drying temperature
and then is blown into material barrel to closed circle to dry material.
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2.3 Why Choose SDD
For these quality deficiencies as bubble, crazing, cracking, poor transparency are
due to insufficient drying of plastic materials before molding, and the engineering
plastics such as: PC, PA, PBT, PET, Nylon, etc. The hygroscopic materials used
in the plastics industry such as PC, PA, PBT, PET, Nylon, etc. cannot be dried
effectively by conventional hot air drying systems because the moisture enters
inside the particles. According to suggestion of the manufacturer, the plastic
materials can be completely dried by drying air with dew-point temperature
≤-20℃. However, the SCD sufficiently dehumidifies and dries the air inside the
closed-loop system, and the dry air eliminates the moisture fast and completely as
to reach the drying and dehumidifying effect.
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2.4 Options
l Built-in type, which meas that dew-point monitor is installed on the
machine, is convenient to monitor dew-point temperature. Add "D" at
the end of the model code.
l Portable type, which meas that dew-point monitor is separate from the
machine, is convenient to test dew-point temperature of different
machines. Add "PD" at the end of the model code.
l For models optional with dew-point control, add “DC” at model behind.
“ES” by setting if dew-point value to control the regeneration required
temperature automatically and lowers power consumption of the
regenerative heater; According to -40OC~+10OC of dew-point value, the
total power consumption can save 0~10%.
l For models with energy-saving drying management, add “ES” at model
behind,standard equipped with HMI touch control ,which can save up to
41% of total power consumption. Volume used per hour is settable
between 40~100% as drying capacity to save the totally power
consumption of 35%~0; Standard equipped with heat regenerative
recycler which recycles the regeneration air exhausted heat via plate heat
exchanger and can save 3%~6% of total power consumption.
l For models optional with drying heat recycler, add “HE” at model behind.
Dehumidified low temperature air via plate heat exchanger to recycle the
heat of hot-wet return air, which can higher the air temperature in drying
heater and lower the power consumption of the heater, the total power
consumption can save 0%~19%.
l For models with hopper polished inside, at "P" at the end of the mode
code.
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3. Installation Testing
This series of models only could be applied in working environment with good
ventilation.
Installation Notice:
1) The machine can only be installed in the vertical position, make sure
there’s no pipeline, fixed structure and other object which may obstruct
machine installation or cause items, human injuries above the selected
location and adjacent areas.
2) For easy maintenance, leaving 1m space around machine is suggested.
Keep machine 2m away from the inflammable materials.
3) The machine must be placed on the ground level to ensure balance state,
and to remove the accumulated condensing water. If machine is need to
install on a higher level (scaffolding or interlayer), it should make sure that
the structure and size could withstand the machine.
Cooling water needs to be connected the before operation. The water port is at
the back of the machine.
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Picture 3-3: Cooling Water Connection
3.4.1 Cooling Water Connection
Connect through the cooling water before machine operation. For the efficiency,
please follow below suggestions:
1) For easy maintenance and safety, install the ball valve at cooling water
inlet and outlet.
2) Water pipe diameter should not less than the diameter of cooling water
inlet and outlet.
3) For water quality, it needs to sediment or filter the water before it gets into
the pipe, to prevent the deposits accumulated on pipeline of cooler and
performance degradation.
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3.4.2 Condensation Drainage Pipe
During normal operation, it will generate condensation water. Connect the water
pipe at drainage outlet to remove the condensation water is necessary.
1) Drainage pipe inner diameter should not less than the diameter of
drainage outlet.
2) Drainage pipe should be long enough to approach the drainage channel,
and be the hose. Be careful not to press or bend the pipe for smooth water
flow (Use the rigid pipe if there’s need to press or bend the hose).
3) As condensation water drainage is in terms of gravity, make sure the
drainage outlet is above the pipe. Otherwise the water can’t be drained out
and will flow back to the machine.
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3.6 Oil Filter
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3.7 Plate Heat Exchanger
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4. Application and Operation
4.1 Operation Procedure for HMI
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Note: in order to prolong the life of honeycomb-rotor, never stop
the machine by cutting down the main power supply directly,
you should turn off the machine by pressing <Button of Switch>
firstly. The later operation ensures honeycomb-rotor
continuously run for a delaying time to cool down the rotor. This
rotating time always is 3 minutes. After the delaying time is
reached, main power supply can be switched off!
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Picture 4-7: User Menu Time Setting Screen
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Picture 4-9: WSET Screen
Note: As to ensure normal working for weekly timing function, it
is necessary to set the current time and date of system correctly
before activating the weekly timing function.
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Picture 4-11: Alarm Message Screen
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Picture 4-16: Project Detection Time Setting Screen
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Drying overheat deviation 10.0℃(0.0~40.0℃) Drying overheat deviation
First drying overheat
20.0℃(0.0~60.0℃)
deviation First drying overheat deviation
Regenerative overheat
10.0℃(0.0~40.0℃)
deviation Regenerative overheat deviation
First regenerative overheat
20.0℃(0.0~60.0℃)
deviation First regenerative overheat deviation
Delayed low temp. alarm 5 secs.(0~999 secs.) Delayed low temp alarm
Drying low temp. deviation 10.0℃(0.0~40.0℃) Drying low temp. deviation
First drying low temp.
20.0℃(0.0~60.0℃)
deviation First drying low temp. deviation
Regenerative low temp.
10.0℃(0.0~40.0℃)
deviation Regenerative low temp. deviation
First regenerative low temp.
20.0℃(0.0~60.0℃)
deviation First regenerative low temp. deviation
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5. Trouble-shooting
Symptom Possible causes Solution
1. The machine halts when alarm rings, and it
is manually reset after faults are removed. Re-power on. If the alarm rings again, there is
EPROM Error 2. The ROM will be detected after being something wrong with the controller. Please
electrified, and error occurs when ROM can’t replace the controller or contact us.
read right datum.
1. The machine halts when alarm rings, and it
is manually reset after faults are removed. 1. Turn off the power switch, change the
2. The part will be detected after being three-phase AC power cord connection and set
electrified, and error occurs when power line a positive phase. After re-powering on, observe
has reversed-phase connection or suffers whether the fault prompt has disappeared or not.
Three-phase power
default phase.
source error 2. If the [J3-10 input definition] is three-phase
3. The machine will be detected after being
electrified. If the [J3-10 input definition] is electric power detection, check whether the
three-phase electrical detection, alarm rings 2 setting of “always on” and “always off” of the
secs. after effective J3-2 input. [external/three-phase power] is correct or not.
Alarm will ring when either 2 or 3 is met.
1. When alarm rings, drying blower/
regenerative blower (rotor motor) close and
heating stops. And they are automatically
Open the electronic control box and press the
Regenerative Blower reset after faults are removed.
reset button on the thermorelay.
Overload 2. The blower will be detected after being
Check the machine if problem arises again.
electrified, and error occurs when the
regenerative blower overload input signal
proves to be effective and delays for 2 secs.
1. When alarm rings, drying blower/
regenerative blower (rotor motor) close and
heating stops. And they are automatically
Open the electronic control box and press the
reset after faults are removed.
Drying Blower Overload reset button on the thermorelay.
2. The blower will be detected after being
Check the machine if problem arises again.
electrified, and error occurs when the drying
blower overload input signal proves to be
effective and delays for 2 secs.
1. Regenerative heating and overheat alarm
output close when alarm rings, and they are Check whether the setting of [regenerative EGO
automatically reset after faults are removed. overheat] and that of “normally open” and “normally
Regenerative EGO close” of overheat signal are correct or not.
2. The part will be detected after being
Overheat
electrified, and error occurs when the
Examine the regenerative blower, filter, air pipes and
regenerative EGO overheat input signal
air damper.
proves to be effective and delays for 2 secs.
1. Drying heating and overheat alarm output
Check whether the setting of [regenerative EGO
close when alarm rings, and they are
overheat] and that of “normally open” and
automatically reset after faults are removed.
“normally close” of overheat signal are correct or
Drying EGO Overheat 2. The part will be detected after being
not.
electrified, and error occurs when the drying
Examine the drying blower, filter, air pipes and
EGO overheat input signal proves to be
air damper.
effective and delays for 2 secs.
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Check whether the setting of [regenerative EGO
1. Drying heating closes when alarm rings,
overheat] and that of “normally open” and
and it is automatically reset after faults are
“normally close” of overheat signal are correct or
removed.
Return Air EGO not.
2. The part is detected after being electrified,
Overheat Examine the drying blower, regenerative blower,
and error occurs when the return air EGO
filter, air pipes and air damper.
overheat input signal proves to be effective
After addressing the problem, press the key of
and delays for 2 secs.
“reset” or reset by re-powering on.
Set the parameters according to the rotor
1. The rotor automatically gets into the state
conditions: time for the rotor to run a cycle [rotor
of “timed cooling” when alarm rings, and it is
monitoring time], and set aside a certain volume.
manually reset after faults are removed.
Rotor Error If you want to disable this alarm, you can set the
2. Error occurs when the rotor can’t be
parameter [rotor monitoring time] as 0.
detected in the [rotor monitoring time] and the
After addressing the problem, press the key of
valid time of its input signal exceeds 10 secs.
“reset” or reset by re-powering on.
1. Regenerative heating closes when alarm Examine the regenerative heating pipe and its
rings, and it is manually reset after faults are control circuit as well as heating contactor;
removed. If you do not use the alarm function, you can set
Regenerative Heating
2. The error occurs when the regenerative the detection time of disconnection [regerative
Pipe Disconnection
heater is turned on and its temp can not reach heating error monitoring] as 0.
the set temp during the period of [regerative After addressing the problem, press the key of
heating error monitoring]. “reset” or reset by re-powering on.
1. Drying heating closes when alarm rings, Examine the drying heating pipe and its control
and it is manually reset after faults are circuit as well as heating contactor;
removed. If you do not use the alarm function, you can set
Drying Heating Pipe
2. The error occurs when the drying heater is the detection time of disconnection [drying
Disconnection
turned on and its temp can not reach the set heating error monitoring] as 0.
temp during the period of [drying heating error After addressing the problem, press the key of
monitoring]. “reset” or reset by re-powering on.
1. Regenerative heating closes when alarm
rings, and it is automatically reset after faults
Examine the wire and check whether the probe
Regenerative Probe are removed.
matches with the controller.
Error 2. The part is detected after being electrified,
and error occurs when there is something
wrong with the probe.
1. Drying heating closes when alarm rings,
and it is automatically reset after faults are
Examine the wire and check whether the probe
removed.
Drying Probe Error matches with the controller.
2. The part is detected after being electrified,
and error occurs when there is something
wrong with the probe.
1. Drying heating closes when alarm rings,
Examine the wire and check whether the probe
and it is automatically reset after faults are
matches with the controller.
removed.
Return Air Probe Error
2. The part is detected after being electrified,
Examine the machine and press the key of
and error occurs when there is something
“reset” after faults are removed.
wrong with the probe.
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1. When alarm rings, regenerative heating
and overheat alarm output close. They are
automatically reset when the regenerative
temp < (regenerative set temp+ [regenerative
overheat deviation]-1℃).
2. Detection when the machine is running:
A. Error occurs when regenerative temp–
regenerative set temp > [regenerative Check whether the setting of parameter
overheat deviation] and [overheat alarm] is [regenerative ceiling deviation] is reasonable.
Regenerative Temp.
delayed.
Overheat If you want to disable it, set the [regenerative
B. If the temp difference exceeds the
ceiling deviation] as 0.
[regenerative ceiling deviation] in modification
of the set temp or when the unit just starts
running, the alarm would not be given. The
alarm rings only when the conditions listed in
(1) are met even after the current temp goes
up and down for several times at the set temp
point.
1. When alarm rings, regenerative heating
and overheat alarm output close. They are
automatically reset when the regenerative
temp < (regenerative set temp+ [regenerative Check whether the setting of parameter [first
overheat deviation]-1℃). regenerative overheat deviation] is reasonable.
First Regenerative
Overheat 2. Inspect when the machine is running:
If you want to disable it, set the [first regenerative
(1) Error occurs when regenerative temp–
overheat deviation] as 0.
regenerative set temp > [first regenerative
overheat deviation] and [overheat alarm] is
delayed.
1. When alarm rings, the machine keeps
running. It is automatically reset when the
regenerative temp > (regenerative set temp-
[regenerative low temp deviation]+1℃).
2. Inspect when the machine is running:
A. Error occurs when regenerative set temp–
regenerative temp > [regenerative low temp Check whether the setting of parameter
deviation] and [low temp alarm] is delayed. [regenerative low temp deviation] is reasonable.
Too-low Regenerative
B. If the temp difference exceeds the
Temp If you want to disable it, set the [regenerative low
[regenerative low temp difference] in
temp deviation] as 0.
modification of the set temp or when the unit
just starts running, the alarm would not be
given. The alarm rings only when the
conditions listed in (1) are met even after the
current temp goes up and down for several
times at the set temp point.
1. When alarm rings, the machine keeps
Check whether the setting of parameter [first
running. It is automatically reset when the
regenerative low temp deviation] is reasonable.
First Too-low regenerative temp > (regenerative set temp-
Regenerative Temp [first regenerative low temp deviation]+1℃). If you want to disable it, set the [first regenerative
2. Inspect when the machine is running:
low temp deviation] as 0.
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(1) Error occurs when regenerative set temp–
regenerative temp > [first regenerative low
temp deviation] and [low temp alarm] is
delayed.
1. When alarm rings, drying heating and
overheat alarm output close. They are
automatically reset when the drying temp <
(drying set temp+ [drying overheat
deviation]-1℃).
2. Detection when the machine is running:
Check whether the setting of parameter [drying
A. Error occurs when drying temp– drying set
overheat deviation] is reasonable.
temp > [drying overheat deviation] and
Drying Temp. Overheat
[overheat alarm] is delayed.
If you want to disable it, set the [drying overheat
B. If the temp difference exceeds the [drying
deviation] as 0.
overheat difference] in modification of the set
temp or when the unit just starts running, the
alarm would not be given. The alarm rings
only when the conditions listed in (1) are met
even after the current temp goes up and
down for several times at the set temp point.
1. When alarm rings, drying heating and
overheat alarm output close. They are
automatically reset when the drying temp < Check whether the setting of parameter [first
(drying set temp+ [first drying overheat drying overheat deviation] is reasonable.
First Drying Temp.
deviation]-1℃).
Overheat If you want to disable it, set the [first drying
2. Inspect when the machine is running:
(1) Error occurs when drying temp– drying set overheat deviation] as 0.
temp > [first drying overheat deviation] and
[overheat alarm] is delayed.
1. When alarm rings, the machine keeps
running. It is automatically reset when the
drying temp > (drying set temp- [drying low
temp deviation]+1℃).
2. Inspect when the machine is running:
A. Error occurs when drying set temp– drying
Check whether the setting of parameter [drying
temp > [drying overheat deviation] and [low
low temp deviation] is reasonable.
temp alarm] is delayed.
Too-low Drying Temp.
B. If the temp difference exceeds the [drying If you want to disable it, set the [drying low temp
low temp difference] in modification of the set deviation] as 0.
temp or when the unit just starts running, the
alarm would not be given. The alarm rings
only when the conditions listed in (1) are met
even after the current temp goes up and
down for several times at the set temp point.
1. When alarm rings, drying heating and
Check whether the setting of parameter [first
overheat alarm output close. They are
drying low temp deviation] is reasonable.
First Too-low Drying automatically reset when the drying temp >
Temp (drying set temp- [first drying low temp
If you want to disable it, set the [first drying low
deviation]+1℃).
temp deviation] as 0.
2. Inspect when the machine is running:
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(1) Error occurs when drying temp– drying set
temp > [first drying low temp deviation] and
[low temp alarm] is delayed.
There is something wrong with the dew point Check whether the connection of dew point
Dew- point Meter Error transducer, and the machine keeps running transducer is right, and whether the range is
after error occurs from 4 to 20 mA.
Set the parameters according to the rotor
1. The rotor automatically gets into the state
conditions: time for the rotor to run a cycle [rotor
of “timed cooling” when alarm rings, and it is
monitoring time], and set aside a certain volume.
manually reset after faults are removed.
If you want to disable this alarm, you can set the
Rotor 2 Error 2. Running detection: error occurs when the
parameter [rotor monitoring time] as 0 or define
rotor can’t be detected in the [rotor monitoring
the [J3-10 input] to be forbidden.
time] and the valid time of its input signal
After addressing the problem, press the key of
exceeds 10 seconds.
“reset” or reset by re-powering on.
1. When alarm rings, the machine keeps
running. It is automatically reset when
dewpoint temp. < [dew point alarm temp.].
2. Inspect when the machine is running:
A) Press [dewpoint temp alarm delay] and
Too-high Dewpoint start detecting; If you want to disable it, set the parameter
Temperature B) Dewpoint temp> [dew point alarm temp] [delayed detection of dewpoint alarm] as 0
and the condition lasts for 10 seconds.
C) The parameter of [delayed detection of
dewpoint alarm] is not 0.
Alarm will be given when A), B) and C) are all
met.
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6. Maintenance and Repair
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6.1 The Useful Life of the Key Parts of the Product
Table 6-1: The useful life of the key parts of the product
Name of the Parts Useful Life
Honeycomb 5 years
Filter 1 year
6.2 Filter
Please periodically clean the dust on the air filters, once per week.
Cleaning steps:
1) Take out the air filter carefully.
2) Blow off the dust on the air filter screen and the cover with pressure air.
3) Wipe off the barrel wall of air filter with dishcloth.
4) After cleaning, place all parts in reversed order carefully.
5) Please ensue that the filter is well seal with metal frame.
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6.3 Honeycomb-rotor
6.3.1 What is Honeycomb-rotor
The main body of the honeycomb-rotor is a honeycomb, made by ceramic fibre
and organic additives, sintered under high temperature with molecular sieve and
silica gel, to be strongly bonded together and form a solid and hard surface. Not
like common molecular sieve, which will produce dusts and fines to pollute raw
materials when aging or become saturated requiring regular replacement, the
moisture of return air is quickly absorbed by numerous tunnels before coming out
of the rotor to form low dew-point air. At the same time, regenerating blower takes
dry air into the honeycomb-rotor from an opposite direction to regenerate the
rotor.
1 4
2
5
10
11
12
6 13
14
Note!
1. Note that in the dry air and wet air outlets, there will be high
concentrations liquid out for some time. If a solvent has been used,
there will be a residual smell for several days.
2. For some dirt which is greasy and sticky in the rotor, 100% elimination
is impossible. The only one thing you can do is to replace the rotor for
the cleaned rotor performance can only be recovered partly.
6.4 EGO
The EGO value has been setting before out factory, Don't modify it.
Default Value
Drying 200℃
Regenerating 200℃
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cooler fan and copper pipe should be dried with compressed air.
4) Make the cooler's upper and lower cover junction clean enough
and smear the silica gel then fixed the covers with screws.
5) Put the cooler on the air at least 4 hours to make the silica gel drying
enough then fix the cooler on the chiller and connect all pipes.
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3) Remove the dew-point detector assembly from the machine, and mount it
to another Φ28 hole on the controller. Install a dew-point monitor base on
original hole, and mount two Teflon pipe connectors on the base. Via the
copper pipe, one connector connects to the honeycomb and another
connects to the dew-point detector assembly.
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5) Insert the dew-point monitor into the hole on the panel and fasten it.
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6.7 Maintenance Schedule
6.7.1 General Machine Information
Electrical Installatio
Voltage: V Hz
Fuse melt current:1 Phase A 3 Phases A
Check the phase frequency of power supply.
Check rotating direction of regenerating motor.
Check rotating direction of conveying blower fans.
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Check if there are loose electrical connections.
Check and maintain compressed-air filter and regulator.
Check solenoid valve.
Check motor overload relay and anti-phase function.
Check whether air pipe is shed, leaked and loose.
PC board renewal.
No fuse breaker renewal.
Note: 1. Manufacturer laboratory data for AC contactor is two million times in life. we suggest
service life for one million four hundred thousand times, if work eight hours per day,
recommended replacing frequency is 1.5 years, if work day and night, replacement is
suggested to be done every six months.
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