Drawell DW-RE-52A User manual

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User Manual
Rotary Evaporator
(DW-RE-52A/52AA/5203)
Please read operating manual before installation and operation.
Drawell International Technology Limited
Shanghai Drawell Scientific Instrument Co.,Ltd
Add : Suite 1101,Lane561 XiuChuan Rd., Greeland Max-Mall,PuDong,Shanghai,China
Tel: [phone]
Fax: [phone]
Web : www.drawell.com.cn
Email : [email protected]

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DRAWELL pursues extraordinary quality and focuses on good after-sales service!
This manual specially illustrates the usage of Rotary Evaporator!
Wrong operation can cause accidents, shorten the life of the device and reduce its
performance.
Therefore, please be sure to carefully read the manual before using!
The manual will be submitted to end-users!
Please keep this manual to prepare for inspection when required!
The manual is used for only reference, the specific shape design is subject to the real
object.
Manual for Rotary Evaporator
I. Introduction of usage
Rotary evaporator is a kind of device with the operation principle as follows: put the rotary
evaporation bottle (flask used to increase the evaporation area) in water bath under the
condition of reduced pressure, and make it rotate while heating it, so as to make the solution in
the bottle diffuse and evaporate. It is a relatively ideal basic instrument necessary for the
concentration, drying and recycling relied on by the production and experimental analysis which
is conducted by the chemical industry, pharmaceutical industry, universities and colleges, and
research laboratories and so on.
II. Structural features
1. Rotation of principal machine
The principal machine consists of a group of reliable micro-motors, speed motors and
integrated circuits. Under the action of electronic speed control, it can realize the stepless
speed regulation within the range of 0-150 r / min.
2. Elevation of principal machine
RE-52AA-type principal machine adopting the method of micro-motor speed change can be
automatically ascended and descended only by pressing the switch with hand. The elevation is

stable, safe and reliable.
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3. Tilt of principal machine
The principal machine can be tilted at random within the range of 0-45 ° by loosing plum
blossom screws. The condensate system made of heat-resistant high-quality glass is
connected to the head of principal machine with sockets, thus making it able to tilt therewith and
continuously feed.
4. Heating water tank
Heating water tank is equipped with a closed heating tube with heating wire, and connected to
digital display of temperature, which can automatically connect or disconnect the power so as to
automatically control the water temperature inside the tank.
5. Evaporation pipe
Evaporation pipe uses PTFE, which is corrosion-resistant and can maintain a high vacuum.
6. Cooler (made of high-quality glass of thermostability, and refined)
RE-52AA Vertical, Dual-reflux.
7. Main metal components are made of corrosion-resistant high-quality stainless steel, thus
extending the service life.
III. Matters needing attention for use
1. Please read the Manual and Brief Introduction of Installing Rotary Evaporator first, and focus
on the part of installation preparation, installation procedures and operation.
2. As for the expensive solution, a simulation technology experiment should be conducted first.
Then, the solution can be normally used after confirming the equipment can meet the
experimental requirements.
3. Water temperature inside the water tank will be automatically controlled by the digital display
of temperature. Accurate water temperature will be measured directly through the mercury
thermometer.

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4. In case of needing to replace the fuse, the power should be cut off first, followed by the
opening of cover to replace the fuse.
5. When heating the water tank, do not touch with hand to prevent the scald.
6. Can not be used under the environment full of flammable, explosive and narcotic gas.
7. In general, this product does not have specific requirements for disinfection.
IV. Main technical parameters
Name
Capacity
of
rotation
Rotati
on
speed
Elevation
of
principal
Temperature
inside water
tank
Power
Pow
er
supp
RE-52AA
50~2000ml
0-150r/min
Power-
drive
n
RT-100℃
Digital display
1000W
220v/50Hz
V. Maintenance
1. Glass component: in case of serious dirt, clean it with the dilute sulfuric acid.
2. PTFE connection tube: in general, it needs to be removed and washed only under serious
dirt.
3. The clear water inside the water tank pot should be frequently replaced, with the pot cleaned.
VI. Failure analysis and exclusion methods
Phenomena
Check (causes)
Handling method
No power supply
1. Check whether the power plug is loose
2. Check whether the fuse is disconnected
1. Insert the power plug
tight
2. Replace the fuse
Rotation
bottle
shakes or gives
out noise
Check whether the glass interface of rotation
bottle is installed smoothly and in place
Reinstall the glass interface
and rotation bottle, and
screw and lock the nut
tightly.
Insufficie
nt
vacuum
1. Check the performance of vacuum pump, and
whether each connector is tightened (block the
air outlet of vacuum pump to observe the
indicators on vacuum table)
2. Check whether the glass appliances
are defected or cracked for coldness
3. Check whether the interface of glass appliance
is
coated with vacuum
1. Screw the
connectors tightly or
replace the vacuum pump
2.Replace the
damaged
appliances
3. Recoat with
vacuum grease
Water tank
can not
be heated.
1 Check the 10A fuse
2. Check whether the heating plug is loose
1. Replace the 10A fuse
2. Insert the heating
plug tightly
In case of being unable to troubleshoot according to the above methods, contact us by calling

0086-29-88763980 to describe the failure phenomenon, instead of operating by yourself.
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VII. Storage and transportation
Instruments packed should be stored inside the room, with the temperature within the
range of -10 ~ 40
℃, relative temperature not exceeding 90%, non-corrosive gases and
well-ventilated condition. In the process of transportation, they should be free of moisture, and
handled with care.
VIII. Accessories
DW-RE-52AA should be equipped with a 24-port / 250ml rotation bottle and a 500ml ball-milling
port collection bottle.
In case of needing flasks of other specification, the customer should purchase otherwise.
IX. Packing List
Seri
al
No.
Names
Qty
Seri
a
l
Names
Qty
1
Principal machine
(including: control
box, the head, lifting
column, base of
1 set
7
Stainless steel bracket
1 PC
2
Water bath tank (connected to
the
right side of principal machine)
1 set
8
Stainless steel bracket circle
1 PC
3
Condensation pipe
1 PC
9
Plastic flask clip
1 PC
4
Collection bottle 250ml
1 PC
10
Stainless steel ball-
milling
mouth clip
1 PC
5
Rotation bottle 250ml
1 PC
11
Warranty Card
1 PC
6
Charging pipe with valves
1 PC
12
Certificate
1 PC
Installation:
1. After unpacking, check according to the packing list, clean and dry pieces of glass and put
them in place according to the position of pictures. On the left side should be the body of
principal machine, with the water tank container on the right side.

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2. 1 As for RE52CS, RE52A and RE52AA types of rotary evaporators, insert the
Embossed-grinding mouth of four-way ball into the PTFE connection tube on the left side of
head of principal machine, and turn a little after inserting tightly to make it to fit well.
2. 2 As for RE5203 type, insert the Embossed-grinding mouth on the side of condensation pipe
into the PTFE connection tube on the left side of head of principal machine, and turn back and
forth after inserting tightly to make it to fit well.
3. As for , RE52A and RE52AA types, realize the interconnection among the condensation pipe,
four-way ball and collection bottle, and joints should be coated with vacuum grease to
strengthen the tightness.
4. Unscrew the black lock nut on the right side of head of principal machine, encase from the
flange of threaded glass joints (see the figure below), and then screw the black lock nut into the
head of principal machine smoothly and tightly.
5. Connect the rotation bottle to the other end of threaded glass joint (Embossed-grinding
mouth), screw on the nut with square rings, and make square rings button the flask rim closely.
In case of needing to back off the rotation bottle, screw off the nut with square rings to make the
bottle exit the Embossed-grinding mouth.
6. Encase D W - RE5203 collection bottle on the ball-milling mouth of condensation pipe,
and clamp with the clip.
7. Water outlets are connected with rubber tubes for discharge.
8. Vacuum port is connected to the vacuum pump through the vacuum tube.
9. After injecting water into the water tank, the heating plug behind the water tank will be
connected to the power line.

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Operation:
1. Power: 220V 50HZ
2. Press the power switch to make it switch on (-), and turn the speed control knob, when the
principal machine will begin to rotate.
3. Press (▲ / ▼) keys, the head of principal machine will ascend or descend automatically.
4. After injecting water into the water tank, press the heating key (-) and set the temperature,
which can automatically control the heating process. Heating without water is prohibited.
5. The process of aligning the head angle is as follows: first, loosen the plum blossom knob on
the right side of stand pillar, turn the head of principal machine, and then screw it tightly after
reaching the appropriate angle.
6. After completion of commissioning, power and heating switches will switched to the state of
Off (0), followed by the unplugging of power plug.

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Warranty card of DRAWELL INSTRUMENT CO., LT D
Warranty instructions of DRAWELL Instrument Co.,
Ltd.
1. Each product of the company is attached with a warranty card only as warranty certificate, it
is properly kept by the user; if lost, without supplement.
2. This product, from the date of purchase, is not overhauled and can not be normally used
within one year, it can be carried on with free repair or replacement of parts with this card. If it is
caused the fault as improper use and custody, it should not belong to the warranty scope.
3. The product of the company, after the expiration of warranty period or beyond the warranty
period scope, is gained the free repair, but the cost of the spare parts is paid by the user.
4. Please provide the valuable advices to our products’ quality, use effect or service quality,
etc., and use “Feedback Card” to back them to my company or my designated dealers.
Product quality feedback card
Purchase date:
Product model
DW-RE-52AA
Production lot number
Date of use
Date of failure
Quality conditions:
Signature of
user
Zip code
Contact address
Contact tel number
Views of the relevant departments of the company:
Signature of person in
charge: Date:

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Drawell International Technology Limited
Shanghai Drawell Scientific Instrument Co.,Ltd
Add : Suite 1101,Lane561 XiuChuan Rd., Greeland Max-Mall,PuDong,Shanghai,China
Tel: [phone]
Fax: [phone]
Web : www.drawell.com.cn
Email : [email protected]