Aircooled chiller Blue Box ZETA 50 kW
- Brand: Bluebox
- Power: 50 kW
- Year: 2014
| Power | 50 kW |
| Year of manufacture | 2014 |
| Type of refrigerant | R410A |
| Refrigerant circuit | 1 pc. |
| Compressors | 2 pcs. Copeland (scroll) |
| Number of fans | 2 pcs. |
| Hydraulic module | water pump Lowara, buffer tank, expansion vessel |
| Working hours | 1303/653 h. |
| Dimensions | 1.7+0.15 x 1.1 x 1.5 m. |
| Weight | 406 kg. |
| Condition | excellent |
TECHNICAL FEATURES
ZETA ECHOS
Air cooled water chiller with hermetic scroll compressors and brazed plate evaporators. Basic unit outfit.
STRUCTURE
Self supporting frame and removable panels lined with noiseabsorbent expanded polyurethane matting in galvanised steel
sheet painted in RAL 7035/5017 with polyester powder at 180 °C, to offer high weather resistance. Screws and bolts in Stainless Steel.
COMPRESSORS
Parallel connected hermetic rotary screw scroll type compressors with oil level gauge, klixon thermal protection and oil equalization system. Enclosed in an insulated compartment and separated from the air flow, the compressors are accessible through the special panels for maintenance operations,
even when the unit is on.
CONDENSERS
The heat exchanger is composed of an alluminium-finned copper-tube multi-row coil, of high efficiency. The finned coil pack is protected by a metal mesh.
ELECTRO FANS
Axial fans designed to enhance performance and reduce noise emissions, driven directly by a 6-pole electric motor with integrated klixon thermal protection. Motor protection degree is IP 54. The fan is fitted with a protection grille in compliance with UNI EN 294.
EVAPORATOR
Plate type heat exchanger in AISI 316 stainless steel covered with closed-cell foam.
Each evaporator is equipped with temperature probe for antifreeze protection and vane operated flow switch supplied as standard.
The plate heat exchangers provide for:
• Increased COP/EER;
• Reduced refrigerant charge;
• Reduced volume and weight of the unit;
• Easier maintenance.
COOLING CIRCUIT
Comprises: fluid valve, feeding plug, fluid sight glass, dehydrating filter, thermostatic expansion valve for pressure external control, high and low pressure switches and safety valve.
ELECTRICAL PANEL
The panel consists of:
• Main disconnect switch;
• Fuses for main and auxilliary power circuit protection ;
• Magnetothermic switches, pumps (if present);
• Compressor remote switches;
• Fan remote switches ;
• Pump remote switches (for ST version)
• Microprocessor to control the following functions:
– Control of ingoing water temperature;
– Anti-freeze protection;
– Compressor operation timers;
– Automatic rotation of compressor start-up sequence;
– Alarm signals;
– Alarm reset;
– Capacity steps;
– Cumulative alarm contact for remote signaling;
– Forced capacity reduction according to pressure limits;
• Display of:
– Ingoing and outgoing water temperature;
– Currently set temperature and differential;
– Alarm description;
– Hour counter for compressor operation;
• black box function;
– Power supply [V/f/Hz]: 400/3~/50 ±5%.
CONTROL AND SAFETY DEVICES
• cooled water temperature control probe (on evaporator
intake);
• anti-freeze probe on evaporator outtake;
• manual reset high pressure controller;
• controlled manual reset low pressure switch;
• high pressure safety valve;
• compressor overtemperature protection;
• fan overtemperature protection;
• vane actuated mechanical flow switch (supplied as standard)
