User manual WHIRLPOOL WRX988SIBW ENERGY GUIDE

[. . . ] Take time now and read this manual which contains valuable information on the MAR Split System. For any further questions regarding the care or operation of the machine, please contact your local Scotsman distributor or call 1-800-533-6006. Basic Specifications Model WRX988SIBWRL-32A MAR2000RL-32A Basic Electrical 208-230/60/1 208-230/60/1 Maximum Fuse Size 15 15 Minimum Circuit Ampacity 2 2 MAR Unit, shown without chute 34 1/2" Ice Machine Area Front Chute Area Top view of unit and chute. December 2000 Page 2 10 " 20 " 24 1/2" WRX988SIBW & MAR2000 A WRX988SIBW OR MAR2000 876 mm (34. 49") B 621 mm (24. 49") C 876 mm (34. 49") Ø1Water Inlet Fitting ¾" Hose Coupling Thread* Ø2 Liquid Line 3/8" ** Ø3 Suction Line 5/8" ** Ø4 Drain 21 mm * Adapter shipped inside unit to go to 3/8" male flare. ** Line sizes may need to be larger, depending upon length of run. December 2000 Page 3 WRX988SIBW & MAR2000 WRX988SIBW Set for Fresh water Operation IMPORTANT OPERATING REQUIREMENTS: WATER LEVEL IN DRUM RESERVOIR · 115-120 mm (4. 5 to 4. 75 inches) Suggested Condensing Unit Settings: HEAD PRESSURE SETTING · 15 Bar (218 PSIG) on air cooled and water cooled units LOW PRESSURE SETTING · 1. 6 Bar (23 PSIG) on air cooled units HI-PRESSURE CONTROL SETTING · 36 Bar (522 PSIG) DRUM ROTATING SPEED · 1. 5 RPM (thick ice) · 2. 3 RPM (thin ice) REFRIGERANT: · R-404A REQUIRED CONDENSING CAPACITY · 4800 Kcal/h at -24EC Evap. [. . . ] Clearance between the blade water flowing out of the condenser to see if it and drum surface must be 0, 10 m/m (. 004"). Observe if ice skin tends to cover entire drum 14. When the system is performing satisfactorily surface and is being scraped-off correctly by the go over with the owner/user to all significant blade. specifications, the start-up and operations. Answer all questions about the care and attention to give 7. Check liquid line sight glass and expansion to the ice making system. If there are indications that more refrigerant is required leak test all connections before adding refrigerant. Observe oil level in compressor crankcase sight glass and add oil as necessary to bring level to center of the sight glass. Let the system operate for at least two hours, then check one by one the operation of each December 2000 Page 18 WRX988SIBW & MAR2000 Electrical Sequence: After power has been connected, because the bin thermostat bulb is warm, the water pump will start. After water has been supplied to the machine, the Time Delay Relay is energized and, after its preset wait time has expired (about 8 - 10 minutes), it connects power to the contactor coil and the liquid line valve. made for the refrigerant flow becomes the evaporator's serpentine. Metered refrigerant enters through the manifold and enters the evaporator serpentine. Water distributing tube December 2000 Page 20 WRX988SIBW & MAR2000 Water and Refrigeration Schematics 1. Liquid line valve December 2000 Page 21 WRX988SIBW & MAR2000 MAR Split - Electrical / Refrigeration The electrical circuit consists of drive motor, water pump, water pressure switch, spout switch and time delay safety device. Drive motor Turning the adjustment to the left, counterclockwise, will increase the rate the pressure in the evaporator. When the compressor is not running the valve will remain closed as the low side pressure will be high The evaporator drum drive motor is a single phase enough to close the expansion valve. motor of 1/2 HP wired for 220 Volts 60 Hz ­ 2. 1 Amps - 1400 R. P. M. with inherent thermal - WRX988SIBW or MAR2000 are each equipped with protector. In normal operation this motor draws an expansion valve having an orifice of 2, 5 m/m. Evaporator Drum IMPORTANT Make sure that drive motor Refrigerant inlet/outlet takes place on left side rotates clockwise facing the unit's front. Failure to this, may result in wrong rotation of evaporator drum with the risk of major damages to The drum body is covered by a jacket in special stainless steel resistant to the water corrosion. Water failure Switch This switch used as safety device when low or interrupted supply water conditions are encountered. Operates on pressure between supply line and feed line to water reservoir. Range is 0, 8 atm (10 psi) off and 1, 2 (17 psi). [. . . ] Close the water supply shut-off valve externally connected onto the water inlet line. Open a little bit the float valve holding arms and remove it from the holder. Remove screws and clip-ring securing float valve bracket to the nozzle. Withdraw bracket from float valve nozzle. [. . . ]