User manual TECUMSEH SILENSYS

[. . . ] 3. 3 Location (Refer to annexe 3, pages 28 to 30) The unit should not block or obstruct thoroughfares, doors, shutters or personnel. The surface supporting the unit must be capable of bearing its weight - Refer to Table 2. 1. 1. Keep sufficient distance between the units and any objects in its surroundings to ensure good air circulation. Silensys® must be installed in a well-ventilated location. [. . . ] CONNECTION OF THE COMPONENTS Refer to electrical diagram (annexe 7, pages 34 to 39) to connect the components. · Connect all control and safety devices installed on the unit. · Secure the cable/s with the cable clamps supplied with the unit. · Close the electrical box after completion of the wiring. 4 PUTTING INTO OPERATION The connection valves are provided with a SAE 7/16"-20 UNF 2A gauge U connection with removable "Schrader" valve. 4. 1 Leak tightness of the circuit All connections must be systematically checked for leaks with an electronic leakage detector. 4. 2 Evacuation Evacuate the installation to about 200 micron metres Hg, to ensure a good quality vacuum. It is recommended to evacuate simultaneously on both sides (HBP and LBP) to accelerate the operation and to obtain an identical vacuum throughout the entire circuit. 4. 3 Refrigerant charge Only charge the installation with the refrigerant the unit has been designed for (refer to label). In the case of a blend, the refrigerant must always be charged in the liquid phase to avoid changes in the composition. Never start the compressor under vacuum (HBP and LBP), but slowly charge the refrigeration circuit to 4-5 bar in the case of R-404A or R-22 (4 bar) and to about 2 bar in the case of R-134a. The remaining charge is filled until the nominal operation conditions of the installation are reached, when the unit is running. Please refer as well to the chapter "Verification before start" before power is applied to the installation. Compatibility of the power supply voltage with that of the condensing unit (fan(s)). Calibration of the electrical protection devices. Check the service valves are fully open. Check the condenser fan(s) are free to rotate. Check of the installation for possible faults. VERIFICATION AFTER START After some hours of operation, verify the following: 1. Voltage and power requirement of the unit. Make sure that the installation is running smoothly. Carry out a general inspection of the installation (cleanliness, unusual noises. . . ). 4. 4 Fan speed control The rotation speed of the fan is controlled by a pressure device. Its role is: - To avoid low condensing pressure in winter, which could interfere with the operation of the expansion valve. [. . . ] · Remove the 4 fixing screws from the grill. · Remove the fan motor / grill combination. · Replace the condenser fan motor. 5. 3 Verifications Carry out a leak check once per year or according to national regulations. [. . . ]