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Our new rooms have more than doubled the ripening capacity as our previous ripening technology. The ripening systems were designed uniquely for West Pak, with patented ripening technologies to ensure the perfect ripening uniformity. |
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| Cooling and Heating Capacity The high efficiency R22 refrigeration systems provide room operating temperatures from 40°F to 70°F.Each room can cool 20 pallets from 72°F to 42°F in approximately 4 hours. Cooling rate is based on 95°F average ambient outside temperature. Each room can heat 20 pallets from 40°F to 60°F in approximately 5-7 hours |
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| Guarantees Pulp Temperature, The ripening rooms will maintain 90% of the pulp temperatures within a spread of +/- 1°F based on full rooms using acceptable ripening practices with 12 hour equilibrium period after set point changes. |
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| Full-length room cooling coils with generous coil surface specially designed to provide the optimum conditions for Avocado ripening. The cooling coils are circuited and sized to provide the lowest latent capacity possible and thus the least amount of moisture removal from the room ensuring the optimum ripening conditions for the fruit. The specially designed Air Coolers are the highest quality available today. The Air Coolers provide cooling and pressurization of the product. One air cooler is provided per room with five (5) fan compartments per air cooler. Dade Service’s custom built Air Coolers are designed to be circuited for R-22 refrigerant. The cooling capacity at peak is approximately 34 tons. The high air flow capacity is at 30,000 cfm. Coils are constructed with copper tubing and have aluminum fins. The motor assemblies are 1.5 HP, total 7.5 HP per room and are TEAO premium efficiency. Heating elements are attached to the coils and provide 20 kW of electric reheat per room. |
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State-of-the-art Touch Screen Controls provides precise air temperature control. The touch Screen controllers provided quick and easy user interface. The ripening room control system was designed by Dade Service Corporation specifically for the requirements of West Pak Avocado. One Touch Screen Control Panel was installed. The control system is configured to control the four ripening rooms. Touch Screen controllers provide complete interface of all ripening room set points and process values including:
- Precise temperature control of each ripening room.
- Humidity control.
- Gassing system control.
- Auto venting system control with gassing interlock.
- Fan motor operating conditions.
- Password protected to prevent unauthorized use.
- 6”color Touch Screen interface with spray resistant face plate.
- Modem for remote monitoring.
The following alarm features are provided with this control system.
- Alarm for condensing units.
- High and low temp alarm for each room temperature. Temperature alarm or condensing unit alarm shuts down room fans to prevent overheating of fruit until the alarm condition is corrected.
- Alarm for fan motors in each ripening rooms.
- Audible Alarm.
- Alarm output for existing Alarm Company monitoring.
- Sensors are provided for rooms:
- One (1) high accuracy discharge air temperature sensor.
- One (1) Check temp sensor for each air temp sensor. This sensor ensures calibration and accuracy of control sensors for a totally reliable system.
- One Electronic Humidity sensor per room.
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| High Airflow Volumes of 1,500 cfm per pallet to provide precise pulp temperature control. |
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| Multiple independent pressure cells in the rooms provide a very flexible pressurization system with no moving parts. The 20-Pallet rooms have 5 independent pressure cells with 4 pallets per cell. |
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| Heavy Duty Pallet Closure System No moving parts, pallet closure system provides an excellent seal to the pallets with years of trouble free operation. The side seals are fabricated from heavy duty reinforced vinyl. The ¼” thick vinyl seals are installed in vertical position at the front and back of each pallet to provide an excellent pallet seal. Seals are fastened to racking with 12 ga mounting plates and ½” diameter fasteners. Pallet deflectors are provided at the front entry of the racks. |
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| Rack System with oversized pallet rails provide for easier pallet loading and a more durable racking system. Pallet rails are 3.5” x 5” x 1/4” thick steel angles with flared entries. The rack system is constructed with structural steel and has a hot dipped galvanized finish to add longer life to the rack system. The rack system is engineered and fabricated to meet local seismic conditions. The racks are engineered for 2,250 lb pallets according to ASIC standards. They are designed with access for inspection along each side at ground level and equipped with an access ladder on each side of the room leading to an inspection platform at the 2nd tier. |
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| Structural Steel Floor Guide/Sealing Angles are provided for pallet guides and seals; constructed with 3” x 5” x ¼” steel angle with a galvanized finish. The fronts of the guides are angled for easy entry. Front angles are factory welded and galvanized after welding. Guides are anchored to the concrete floor with ¾” fasteners. |
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| Insulated panels: the shell of the rooms is constructed with three inch thick CFC free polyurethane insulated panels. R-value of 26.18. The inside dimension of the rooms are 13’ wide x 20’ 3’’ high x 22’ 6’’ deep. Both sides of the insulated panels are clad with 26 gauge stucco embossed galvanized steel. The panel finish is a white USDA modified polyester coating. The panels were manufactured on a continuous line system providing the highest quality available. |
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| Insulated ripening room doors: Electrically operated sectional overhead doors are provided. These doors are of highest quality and are manufactured by BG Door Corporation. The doors are supplied with a .55 KW electrical operator for 480 volt (60Hz) and 24 Volts current with interrupter in case of current failure. The doors are 10’ wide x 16’ 6’’ high. They are designed with a 2’’ thick polyurethane core. The panel sections are clad with 26 gauge galvanized steel. The exterior of the doors have a yellow polyester finish and the interior surface of the doors have a white polyester finish. Each door is provided with a kick out style emergency window. Doors are operated with a push button station on each side of the door. The exterior station has a keyed lock and the interior station will override the locked device in case of an emergency. Doors are also supplied with a slack cable safety device and a bottom reversing safety edge. |
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| Bollards: The door openings are protected with full perimeter bollards consisting of 6’’ diameter schedule 40 steel pipe at the sides and 4’’ diameter schedule 40 steel pipe at the top cross bar. The bollards are clad with a heavy duty safety yellow PVC sleeve. |
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| Refrigeration System the system was designed specifically for West Pak Avocado. The refrigeration system was engineered as a split system and consists of one Century model DM75H2 condensing unit with three 25 HP compressors. The condensing unit is 88’’ wide x 190’’ long and weighs approximately 6,500 lbs. A new stand was engineered to accept the weight of the condensing unit and to conform to the seismic conditions in the area. The condensing unit was placed on top of this stand and the three compressors were mounted on the concrete slab beneath the condensing unit. Moduload unloading on each compressor for greater operating efficiency and electrical savings. Sporlan suction pressure control valves are installed at each air cooler, for precise temperature control. The system was designed to use R22 refrigerant. All copper piping was used and the piping was insulated with ¾’’ armaflex, all of the exterior piping is sealed and weather protected. |
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| Humidification three Herrmidifier model 707U humidifiers were supplied per room. |
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| Auto Vent system supplied with the following items; one (1) 6” diameter exhaust fan with back draft damper. Piped to common exhaust duct to exterior of building. One (1) intake vent with gravity damper. Automatic controlling of gassing and venting functions via control system. |
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| Sensors the sensors provided for these ripening rooms were chosen for their quality and reliability. Each room contains one high accuracy discharge air temperature sensor, one check temp sensor for each air temp sensor. This sensor ensures calibration and accuracy of control sensors for a totally reliable system. One Electronic Humidity sensor is also supplied for each room. |
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| Room Lights four T5 high output fluorescent lights are provided per room with an output of 104 watts per fixture. These fixtures are, wash down duty and provide 90 CRI light with 95% lumen maintenance. |
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| Commissioning and Training all rooms were proofed at startup. A Dade Service technician checked the equipment for proper operation and rotation. The control system inputs and outputs were tested and all sensors were checked for proper calibration. West Pak personnel were then given training in the operation of the new ripening rooms. |
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