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Summary of Contents for Wohler REC 400
- Page 1 Operating manual Recovery machine Wöhler REC 400...
- Page 2 Contents Contents General information ......4 Information on the operating instructions ..4 User group ............ 4 Notes in the operating instructions ....4 Intended use ..........5 Basic equipment ..........5 Waste disposal ..........5 Address ............5 Warnings ..........6 Specification ..........
- Page 3 Contents Malfunctions........25 Accessories......... 25 Warranty and service ......26 14.1 Warranty ............26 14.2 Service ............26 Declaration of conformity ....27...
- Page 4 We accept no liability for damage caused by fail- ure to observe these operating instructions. User group The Wöhler REC 400 may only be used for its in- tended purpose by qualified refrigerant service technicians. These persons must be trained in the...
- Page 5 Waste materials such as oil or other residues re- sulting from the use of the Wöhler REC 400 must be disposed of in accordance with the applicable environmental standards in your country. Dispose of refrigerant, oil or other residues that arise when using the Wöhler REC 400 in accord-...
- Page 6 Area of application: Never use the Wöhler REC 400 in environments where there is a risk of explosion. The working environment should always be well ventilated: Do not use in the vicinity of sewage pipes.
- Page 7 If the pressure of a system is stable, the measured pressure values of the Wöhler REC 400 corre- spond approximately to the real values. If the pressure of a system changes, the pres- sure readings at different points in the system will be different.
- Page 8 Specification Specification Description Specification General Approved refri- gerants: Cat. A1: R134a, R402A, R402B, R404A, R407A, R407B, R407C, R407D, R408A, R409A, R410A, Cat. A2: R411A, R411B, R412A Cat A2L: R32 Max. Pressure 38.5 bar (automatic shut-off at higher pres- sure) Cylinder 2 cylinders Power supply 220V-240V, 50/60Hz...
- Page 9 Specification Gas flow rate The gas flow rate depends on the inlet pressure. Fig. 1: Diagram: Ratio of gas flow rate in kg to inlet pressure in bar Refrigerant R134a R410A Liquid 2.40 kg/min 2.70 kg/min 3.50 kg/min Push-pull mode 7.50 kg/min 8.50 kg/min 9.50 kg/min...
- Page 10 Possible leaks or other faults in the system are de- tected at this stage. The Wöhler REC 400 generates a vacuum in the refrigeration system. In this way, the refrigerant is sucked into the extraction station through special lines or hoses.
- Page 11 Device parts and function Device parts and function Recovery machine Fig. 2: Recovery machine Part Function Mains cable guide Display with control panels Air intake Rotary switch Connections, see Fig. 33 Air outlet...
- Page 12 Device parts and function Outlet connection to Input connection to the disposal con- the refrigeration tainer system Fig. 3 : Connections Display Inlet pressure Outlet pressure Status symbols and messages Fig. 4: Display Button Functions START/STOP Press briefly: Start and stop the engine Zero pressure sensors ZERO Rotary switch in RECOVER position (suction)
- Page 13 Device parts and function Status icons and messages: The RUN icon rotates when the motor is running Device is muted Message Functions Measure Low pressure Motor is switched off, vacuum at re- frigerant inlet low cutoff Hardware - Overcurrent protection Allow the appliance to cool down Possible...
- Page 14 As soon as work on the refrigeration system has been completed, select the self-purge function. As a result, the refrigerant is completely drained from the Wöhler REC 400 into the disposal container and can no longer escape into the atmosphere.
- Page 15 Press START to generate pressure at the out- • put connection (OUT). The Wöhler REC 400 works perfectly if the high- pressure cut-off takes place within 45 seconds at approx. 3800 kPa (550 psi), see chapter 3, Speci- fications.
- Page 16 Before suctioning Rinsing the disposal Use a vacuumed disposal container to dis- • pose of the refrigerant. In this case, the nega- container tive pressure in the disposal container sup- ports the extraction. NOTE! You can buy the disposal container in a vacuum or vacuum a used container with the Wöhler VP 400 vacuum pump.
- Page 17 Fig. 5: Schematic drawing of the device installation for extracting refrigerant (example) During this process, the refrigerant is sucked from the system through the manifold and the Wöhler REC 400 into the refrigerant tank. WARNING! Observe the safety regulations for the refrigerants used.
- Page 18 Ensure that the filter dryer is installed between the manifold and the Wöh- ler REC 400. Only then connect the Wöhler REC 400 to the • power supply. • Now slowly open the valves.
- Page 19 Normal extraction of refrigerant Then set the rotary switch to RECOVER to • extract the liquid part of the refrigerant.
- Page 20 Self-purging We strongly recommend using the SELF PURGE function after each use of the appliance to ensure that no refrigerant remains in the Wöhler REC 400. NOTE! Regular self-purging ensures a longer service life for the appliance, a lower environmental impact and prevents the mixing of refrigerant during fur- ther work with the Wöhler REC 400.
- Page 21 Switch off the refrigeration system to equalize • the pressure in the refrigeration circuit. refrigerant using the Connect the manifold, the Wöhler REC 400 push-pull method • and the disposal container to the refrigeration system as shown in the following illustration.
- Page 22 Press START to start extracting the liquid re- • frigerant. The Wöhler REC 400 now generates a vacuum in the refrigerant bottle so that the liquid refrigerant now flows from the receiver into the refrigerant bottle. As soon as the scales show little or no in- crease in the weight of the refrigerant bottle, the extraction of the gaseous refrigerant can begin.
- Page 23 Store device Make sure that the blue valve (low pressure) • on the manifold is open and the red valve (high pressure) is closed. Now proceed as described in chapter 7 to ex- • tract the remaining gaseous refrigerant. Store device Disconnect the appliance from the power sup- •...
- Page 24 Maintenance Maintenance 11.1 General • If necessary, clean the housing with a damp cloth without detergent. 11.2 Cleaning the screen As soon as the screen filter is clogged, the appli- ance will no longer work efficiently. Clean or re- filter place the filter regularly Fig.
- Page 25 Send device for service damaged Equipment cannot be Hose connections not fitted Connect hoses tightly vacuumed tightly. Leaking appliance Send device for service Accessories Filter dryer for Wöhler REC 400 Art. No. 10303 Filter for Wöhler REC 400 Art. No.10304...
- Page 26 If used correctly, the warranty period for the Wöh- ler REC 400 is twelve months from the date of purchase. Excluded from this warranty are wear items such as the screen filter or the filter dryer.
- Page 27 Wöhler-Platz 1, D-33181 Bad Wünnenberg declares that the product: Product name: Wöhler REC 400 Recovery machine complies with the essential protection requirements laid down in the Directive of the European Parliament and of the Council on the harmonization of the laws of the Member States relating to the making available on the market of ra- dio equipment.
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