Minimum/Maximum Water Flow Rates; Location Of The Main Components; Main Components Of The Refrigerating Circuit - CIAT DYNACIAT power LG Serie Manual De Instrucciones

10.4 Minimum/maximum water flow rates

The flow rates in the exchangers must be maintained between the values given below.
power 700 V
DYNACIAT LG - LGP
min. m /h
3
Evaporator
max. m /h
3
min. m /h
3
Condenser
max. m /h
3

11 LOCATION OF THE MAIN COMPONENTS

power
DYNACIAT
Evaporator
Compressor
No. 4
Compressor No. 3 Compressor No. 2
Evaporator

12 MAIN COMPONENTS OF THE REFRIGERATING CIRCUIT

Compressor
The DYNACIAT power
units use hermetic SCROLL compressors.
Oil
The compressor is lubricated with a polyester oil, (POE) type
160SZ for the DYNACIAT power
oil will be the 3MAF (32 cSt) type for the DYNACIAT
V to 2400 V chillers.
If necessary, top up the compressors with ICI Emkarate RL 32
CF oil or Mobil EAL Arctic 22 CC oil if no 3MAF is available for
R410A models.
Refrigerant
The DYNACIAT power 700 V to 2400 V use R410A.
The Global Warming Potential (GWP) is 2088 GWP for R410A,
in compliance with standard EN378-1.
Exchangers
With the DYNACIAT power , the evaporators and condensers are
double-circuit brazed-plate heat exchangers.
The evaporators are provided as standard with 19 mm
polyurethane foam insulation, adapted for operation with low-
temperature brine solution below 0 °C.
The heat-transfer medium must be filtered and internal
inspections
must be carried out.
Repairs or modifications of any kind to the plate heat
exchangers are prohibited. CIAT only authorises replacement
of the heat exchanger by a qualified technician using original
equipment. If the heat exchanger is replaced, this must be
noted in the maintenance booklet.
800 V 900 V 1000 V
22 26 29 33
70 81 92 105
19 22 25 28
64 74 84 95
700 V to 1600 V
Electrical cabinet
Compressor Compressor
No. 1
Compressor
Condenser
Electrical cabinet
700 V to 1200 V chillers. This
power
1100 V 1200 V 1400 V
35 38 44
113 124 137
31 33 38
103 112 129
DYNACIAT power
Evaporator
No. 4
No. 5
Compressor No. 6
Evaporator
Expansion valve
Expansion valves have a load for the thermostatic element
(MOP)
to obtain the maximum evaporation pressure in order to protect
the compressor.
The DYNACIATpower 700 to 1600 models are fitted as
1400
standard with one-piece hermetically-sealed thermostatic
expansion valves and the 1800 to 2400 models are fitted with
electronic expansion valves that are set in the factory.
Every unit is fitted with one-piece hermetically-sealed
thermostatic expansion valves that are set in the factory to
maintain superheat of 5-7 °C under all operating conditions.
Dryer
Every unit is fitted as standard with a dehumidifier filter (the
filter unit has a replaceable cartridge) to keep the refrigerating
circuit clean and free of moisture. The dryer filter consists of
aluminium oxide and a molecular sieve that neutralises any
acids in the refrigeration circuit.
Liquid sight glass
Located on the liquid line just after the filter dryer, the liquid sight
glass is used to monitor the charge in the unit and to check for
moisture in the circuit. Bubbles in the sight glass mean that the
refrigerant load is insufficient or that non-condensable gases
are in the refrigeration circuit. If the sight glass indicator paper
changes colour, there is moisture in the circuit.
Warning: Some of the sight glasses may turn yellow when the
machine is powered off, as their sensitivity is affected by the fluid
temperature.
The sight glasses should return to green after the unit has been
operating for a few hours.
If the sight glasses remain yellow, there is excessive moisture in
the circuit. A specialist intervention is required.
EN - 7
1600 V 1800 V 2100 V
51 61 68
151
150 150
43
52 59
143
150 150
1800 V to 2400 V
Electrical cabinet
Compressor
No. 3
Compressor
No. 2
Compressor No. 1
Condenser
Electrical cabinet
2400 V
74
150
66
153
EN