MTA TAEevo Tech 101 - Compressor Features and Protection

OPERATING AND MAINTENANCE MANUAL
Chapter 4 - Description
TAEevo Tech 015÷802 60 Hz UL
20
The data in this manual are not binding and they can be modified by the manufacturer without notice. Reproduction of this manual is strictly prohibited
ENGLISH
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CHAPTER 4
DESCRIPTION
4.1 Components
Data for materials are referred to standard units. Non-standard materials may be utilised in order to meet specific
requirements. In this case refer to the offer data.
The units are basically composed of the following parts:
• Refrigerant compressor
• Condenser
• Evaporator
•Tank
•Pump
• Frame/cabinet
• Electronic controller
4.1.1 Refrigerant circuit
TAEevo Tech 015÷401 models feature a single refrigerant circuit with one or two compressors connected in parallel
(tandem).
TAEevo Tech 402÷802 models feature two refrigerant circuits with two compressors connected in parallel (tandem).
Each refrigerant circuit, is equipped with the following components:
• refrigerant fluid utilised R410A;
• hermetic scroll compressor;
• pressure switch for fans with On/Off control (only TAEevo Tech 015÷401);
• high and low refrigerant pressure switches;
• high pressure transducer for fan speed control and for unloading (modes TAEevo Tech 402÷802);
• thermostatic lamination valve complete with external pressure equalizer;
• filter dryer;
• liquid sight-glass;
• refrigerant pressure gauges (from TAEevo Tech 031);
• schrader service valves.
For more information consult the attached diagrams.
4.2 Compressors
The compressors are of the SCROLL type and are characterised by high energy efficiency, low vibration and consequent very
low noise during normal operation.
The compressors are cooled by the refrigerant on the suction line, protected against possible overheating of the windings by
an internal module that monitors windings temperature, and protected upline by thermal magnetic cutouts. These components
are housed in an enclosed compartment, but they are readily accessible.
NOTE
During the short periods of starting and stopping the compressor you may hear a metallic noise due respectively to the initial
contact between the coils and to the momentary reversal of their rotation. This noise is absolutely normal and does not affect
the reliability of the compressor.
ATTENTION
At the time of the first start following a prolonged stoppage lasting several days, ensure the crankcase heater of each
compressor is switched on at least 12 hours before pressing the start button.
NOTE
TAEevo Tech 402÷802 units can be optionally fitted with compressor stating with a Soft Starter.
The Soft Starter is linked to each compressor and it serves to limit peak current at the time of compressor starting.
- Units equipped with soft starters can operate up to a maximum ambient temperature of 40°C, beyond which the unit simply
stops, without tripping any alarms.
- The soft starters are not compatible with capacitive devices (e.g. power factor correction capacitors) installed between the
soft starter and the compressor motor. Any static or dynamic power factor correction systems installed upline from the main
power circuit breaker must not operate simultaneously with staring of the soft starter.
4.3 Condenser
Condensation occurs in finned core coils composed of copper tubes and headers, corrugated aluminium fins, and galvanized
sheet metal shoulders.