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06 

 

 

 

 

Maintenance and Repair 

(9)    Dispose in accordance with legislation for disposal and cleaning of waste products, handle as 

industrial waste, and do not incinerate. 

 

 

Toxic fluorine gas is generated by incineration of fluorine-based plastics. 

(10) 

If the pump ceases operation, turn power OFF (set switch to O) immediately to prevent 
accidents, remove the power cord from the wall outlet, and contact your dealer or the 
manufacturer for inspection and repair. 

(11)  Leave the pump for at least 30 minutes until it has cooled, and begin operation again. Touching 

the pump immediately after it has stopped may result in burns.

 

 
 
 

 

Installation 

(1)  The pump may malfunction if it is subjected to shocks or 

tipped over on its side. 

(2)  Do not hold or push the tube at the top of the pump (see 

below). Damage to the tube may affect performance of 
the pump. 

 

Applications 

(3)  This pump is not designed to be corrosion-proof. Use it only with clean air at normal 

temperature, or with gases of equivalent characteristics. 

(4)    This pump is designed for general corrosion resistance, however it is not resistant to molten 

alkali metals such as molten sodium, to fluorine at high temperatures, and to some oxides of 
fluorine. 

(5)  Corrosion-resistant plastic is used in the external covering of the DTC-41K however it is not 

resistant to all chemicals. 

 

Ensure that the following chemicals do not come in contact with the pump. Any chemical, 
including the following, which comes into contact with the pump should be wiped off 
immediately. 

   

•    Acetone    • Ethyl ether    • Ethyl acetate    • Animal fats 

 

 

 

 

 

 

 

 

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Caution

 

 

!

Note 

Summary of Contents for DTC-41

Page 1: ...Please read this manual thoroughly to ensure safe and effective use of the equipment Keep this manual in a safe place Due to periodic improvements in performance the equipment described in this manua...

Page 2: ...llation 3 3 5 Piping 3 3 6 Storage 4 4 Cautions for Operation 4 4 1 Cautions for Operation 4 4 2 Operation of the Thermal Protection Relay 4 4 3 Starting in Cold Weather 4 5 Pump Performance 5 5 1 Pre...

Page 3: ...41 2 Fig 2 2 DTC 41K 2 Fig 3 1 Example of Piping Used When Evacuating a Vessel 4 Table 1 1 Product Specifications 1 Table 6 1 Consumables List 6 Table 6 2 Locations for Maintenance and Inspection 7 Ta...

Page 4: ...quipment correctly Read the section on Safe Use particularly closely Keep This Manual in a Safe Place After reading this manual be sure to keep it in a safe place which is readily accessible to others...

Page 5: ...ssing Contact your agent or the sales division of the manufacturer if there are any problems with the pump Customers purchasing the DTC 41K Do not grip or pull the tube on the top of the pump when rem...

Page 6: ...r medium injuries to the operator or damage to the equipment Incorrect handling of the equipment may result in damage to the equipment and hinder its correct operation Some components reach surface te...

Page 7: ...ve the power cord from the wall socket before checking or repairing the pump Failure to do so may result in electric shock or the pump suddenly starting and causing injury 5 Ensure that the relevant w...

Page 8: ...age installation and operation 1 Ambient temperature of 0 40 C and maximum relative humidity of 85 during operation 2 Other conditions for storage and operation a Level floor of sufficient strength b...

Page 9: ...shocks or tipped over on its side 2 Do not hold or push the tube at the top of the pump see below Damage to the tube may affect performance of the pump Applications 3 This pump is not designed to be c...

Page 10: ...at high ambient temperatures will dramatically reduce the life of the pump 10 Back pressure at the outlet while the pump is starting may overload the motor 11 The thermal protection relay operates whe...

Page 11: ...t come in contact with the pump Any chemical including the following which comes into contact with the pump should be wiped off immediately Acetone Ethyl ether Ethyl acetate Animal fats 5 Ensure that...

Page 12: ...t if the motor temperature rises due to a pump fault which prevents rotation or if load becomes excessive 2 It is recommended that additional protective devices eg earth leakage breaker motor breaker...

Page 13: ...ion rubbers to isolate the pump from vibrations in the equipment See 3 2 Environmental Conditions for Installation Storage and Operation for details 3 4 Checking Operation After Installation 1 Remove...

Page 14: ...e the power cord from the outlet and contact the manufacturer Note that the pump will be very hot and should not be touched 2 The pump operates automatically when temperature drops Shut off the power...

Page 15: ...sed pressure 2 Leaks into the vacuum system introduce other gases resulting in increased pressure 5 2 Evacuation Rate The maximum rate of evacuation is reached when air is introduced and decreases sli...

Page 16: ...er the first 3000 hours of operation and replace and clean in accordance with the Replacement and Cleaning Guide on the following page Refer to 6 4 Replacing and Cleaning Consumables for procedures Re...

Page 17: ...d Visual inspection O rings Hard cracked or stretched Visual inspection Bearings Abnormal noises Listen 6 4 Replacing and Cleaning Consumables See Caution 11 P06 Always use a mask and gloves when repl...

Page 18: ...truss head screws M4 x 10 and remove the top panel Photo 3 4 Remove the eight hexagon socket head cap screws M6 x 25 and remove the pump head as shown in Photo 4 Caution Gripping pushing or bending t...

Page 19: ...emoving the diaphragms it is convenient to insert the pump head cover hexagon socket head cap screw M6 x 25 into the threaded hole in the connecting rod 8 Remove any foreign matter from the threaded h...

Page 20: ...inlet and outlet pipes 1 2 DTC 41K Replace diaphragms in accordance with 1 1 DTC 41 steps 4 12 2 Replacing Inlet and Outlet Valves simultaneous replacement of both diaphragms is recommended Use tools...

Page 21: ...from the casing and then remove the valve retainer in accordance with steps 1 and 2 in 2 Replacing inlet and outlet valves 2 Remove the O rings Photo 14 15 16 3 Clean the inlet and outlet pipes pump h...

Page 22: ...small for capacity of vacuum vessel 1 Select another pump 2 Pressure measurement is incorrect 2 Measure the pressure correctly 5 1 3 Vacuum gauge is unsuitable 3 Measure with a calibrated vacuum gaug...

Page 23: ...e and inspection etc d Malfunctions caused by modifications or repairs carried out by a party other than the manufacturer or by a service company not approved by the manufacturer e Malfunctions caused...

Page 24: ...Industrial Safety and Health Law designates particular substances as the materials to be notified 2 Usage Status Operation Method Approx hours per day years and months Continuous Operation Intermitte...

Page 25: ...6 6397 2286 ULVAC KIKO Inc https ulvac kiko com en Please contact us for products Service Base or other Inquiries from here ULVAC Inc Components Division 2500 Hagisono Chigasaki Kanagawa 253 8543 Japa...

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