User manual WHIRLPOOL AGS 834/WP INSTRUCTION FOR USE

[. . . ] ICE FLAKERS Range TABLE OF CONTENTS Introduction Warnings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Operating Principle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Specifications Installation diagrams for inlet/outlet tubes and dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Otherwise check the troubleshooting section of this manual. 18 2. Make sure fan blades don't come into contact with anything and that none of the tubes vibrate. Inspection and Adjustment of Water Level in the Trough 1. Make sure water level in trough does not go down completely as this will set off "WATER LOW" sensor while machine is operating. Should this happen with a pressure higher than 1Kg/cm2 and filters in good condition, INCREASE LEVEL by bending the float arm upwards. 2. Turn machine off and wait for flotation valve to close before water escapes through maximum level drain. If that happens and pressure is lower than 6kg. /cm2, slowly bend and lower the float’s arm until you have achieved an adequate flow. If water pressure exceeds 6 kg. /cm2. , a pressure reduction unit should be installed to maintain pressure at 4kg. /cm2. Cross Check a) Shut off water faucet. Water level will recede until automatic shut-off occurs. Water level will rise and machine operations will commence in 3 minutes’ time. Please instruct end user as to the correct maintenance procedures as described above. The manufacturer declines all responsibility for damage caused by failure to properly maintain the equipment. 19 ADJUSTMENTS Expansion valve. Water Level The purpose of maintaining proper water levels is to allow adequate water flow to the evaporator. A water level sensor has been incorporated to shut off unit until required minimum water level is achieved. The optimal water level is indicated in diagram below. 20 Pressure-controlled Valve on cooling water circuit • The purpose of this valve is to control cooling water flow to the condenser, so as to maintain the high pressure at 16. 5 bar (232-240 Psi), which corresponds to water temperature of 40°C (exit temperature). • If mains water temperature exceeds 32°C, the above values of high pressure and water temperature at exit will be higher. ADJUSTMENT: High pressure (and water temperature) can be decreased by opening valve (turn screw clockwise). Fan pressostat (air–cooled models) High pressure is controlled by starting and stopping fan, which provides airflow through condenser. (1Kg/cm2 or 14 Psi. ) Cut-off pressure should be 16 Kg/cm2 (228 Psi. ) Low pressure values in circuit may cause gearbox malfunction due to excessive ice production. Pressure values higher than 14 Kg/cm2 will diminish ice production and may shorten compressor life. Pressure can be regulated by rotating screw on Pressure Control Valve (clockwise to increase pressure). One full turn is equivalent to about 1. 5 Kg/cm2. 21 Safety pressostat This safety device trips when pressure is too high. Pressure might reach the set limit of 27 Kg/cm2 when: a) Air circulation is not sufficient, room temperature is too high, condenser is dirty or fan motor is broken. (air-cooled models) b) Insufficient water in the cooling circuit, inlet water temperature is too high or fan motor is broken (water -cooled models). The safety pressostat will switch off the machine completely until pressure drops again to its lower set point value (21 Kg/cm2) HIGH PRESSURE SET POINTS (non-adjustable): 27-21 Kg/cm2 (380-296 Psi. ) Start up timer This timer delays start up for 2-3 minutes after machine is switched on. [. . . ] F) Compressor start system is defective. G) Pressostat valve is defective or needs adjustment. H) Voltage too low/insufficient line section A) Clean condenser. D) Check and replace/adjust E) Check and replace. [. . . ]