User manual TOSHIBA RAS-10UKP-ES SERVICE MANUAL

[. . . ] SVM-02005(1) SERVICE MANUAL AIR-CONDITIONER SPLIT WALL TYPE RAS-13UKP-ES / RAS-13UA-ES RAS-10UKP-ES / RAS-10UA-ES RAS-07UKP-ES / RAS-07UA-ES 07 Class 10/13 Class Revised on May, 2002 FILE NO. CONSTRUCTION VIEWS 2-1 Indoor Unit 2-2 Outdoor Unit (RAS-13UA-ES) 2-3. SPECIFICATION OF ELECTRICAL PARTS 4-1 Indoor Unit 4-2 Outdoor Unit (RAS-13UA-ES) 4-3 Outdoor Unit (RAS-10UA-ES, RAS-07UA-ES) 5. REFRIGERATION CYCLE DIAGRAM 5-1 RAS-13UKP-ES / RAS-13UA-ES 5-2 RAS-10UKP-ES / RAS-10UA-ES 5-3 RAS-07UKP-ES / RAS-07UA-ES 6. [. . . ] Cut the pipe with a pipe cutter. Obliquity Roughness Warp (Unit : N·m) Outer dia. of copper pipe 6. 35 mm 9. 52 mm Tightening torque 16 to 18 (1. 6 to 1. 8 kgf·m) 33 to 42 (3. 3 to 4. 2 kgf·m) 90° Fig. Insert a flare nut into the pipe, and flare the pipe. · Projection margin in flaring : A (Unit : mm) A · Tightening torque of flare pipe connections The operating pressure of R-410A is higher than that of R-22. It is therefore necessary to firmly tighten the flare pipe connecting sections (which connect the indoor and outdoor units) up to the specified tightening torque. Incorrect connections may cause not only a gas leakage, but also damage to the refrigerant cycle. Flare at indoor unit side Die Pipe Fig. of copper pipe 6. 35 9. 52 R-410A tool used 0 to 0. 5 0 to 0. 5 Conventional tool used 1. 0 to 1. 5 1. 0 to 1. 5 Flare at outdoor unit side Fig. 8-5-4 Imperial (wing nut type, conventional tool) Outer dia. of copper pipe 6. 35 9. 52 <Tightening connection> Align the centers of the connecting pipes and tighten the flare nut as far as possible with your fingers. Then tighten the nut with a spanner and torque wrench as shown in the figure. Half union R-410A 85 mm 1. 5 to 2. 0 1. 5 to 2. 0 Mark line For RAS-07UA-ES Fig. 8-5-5 Flare nut CAUTION · Do not apply excess torque. · Otherwise, the nut may crack depending on the conditions. Externally threaded side Internally threaded side Use a wrench to secure. Use a torque wrench to tighten. Fig. 8-5-6 CAUTION · KEEP IMPORTANT 4 POINTS FOR PIPING WORK (1) Take away dust and moisture (Inside of the connecting pipes. ) (2) Tight connection (between pipes and unit) (3) Evacuate the air in the connecting pipes using VACUUM PUMP. (4) Check gas leak (connected points) ­ 35 ­ FILE NO. Evacuating After the piping has been connected to the indoor unit, you can perform the air purge together at once. AIR PURGE Evacuate the air in the connecting pipes and in the indoor unit using a vacuum pump. Do not use the refrigerant in the outdoor unit. For details, see the manual of the vacuum pump. <Using a vacuum pump> Be sure to use a vacuum pump with counter-flow prevention function so that inside oil of the pump does not flow backward into pipes of the air conditioner when the pump stops. (If oil inside of the vacuum pump enters into the air conditioner, which use R-410A, refrigeration cycle trouble may result. ) 1. Connect the charge hose from the manifold valve to the service port of the gas side packed valve. Connect the charge hose to the port of the vacuum pump. [. . . ] (7-Screws 4 x 10L with nylon washer) Pull the front lower portion toward you, and remove it pulling out upward. Remarks Remove 7-Screws 4 x 10L 2-Screws 4 x 10L 2-Screws 4 x 22L 2 Capacitor for compressor 1) Perform the common procedure 1. 2) Remove the fixing screw and the capacitor band. (1-Screw 4 x 8L) 3) Disconnect the lead wires. [. . . ]