Table of Contents
Advertisement
3.- COMMISSIONING AND OPERATION
3.1.- PRELIMINARY CHECKS BEFORE STARTUP
- Check that the power supply is the same as stated on the Rating Plate which is in agreement with the electrical
diagram for the unit and that cable sizes are correct.
- Check that tightness of the electrical connections to their terminals and to ground.
- Check the control panel connections.
(If the connection is incorrect, the unit will not operate and the control panel display will not light).
- Check with your hand that the fans are turning freely.
CONTROL PANEL
CHECK COMPRESSOR OIL LEVEL
- Part of the compressor oil is pumped to the system when the compressor starts, so for split systems part of the oil
can be placed in the system: piping lines, traps, evaporator, etc.
- The quantity of oil in the system depends on the refrigerant charge. The compressor cannot work with incorrect
or excessive refrigerant.
- It may be necessary to add oil to the system, depending on the piping length.
- See below an example of calculation of the oil quantity to be added to the system.
EXAMPLE:
CSH 030 + Air treatment unit with 65m. (With remote option).
- Refrigerant charge = 6.33kg. (TABLE 3.1, p. 23).
- Refrigerant charge to add with 65m = 182g/m x 65 = 11.83kg. (TABLE 2, p. 22).
- Total refrigerant charge = 6.33 + 11.83 = 18.16kg.
- Oil compressor charge (l) = 3.25.
- Oil compressor charge (kg) = 2.925 (density = 0.9).
- Permissible quantity in the system (kg) = 0.03 (= 2.925 x 0.01).
- Permissible refrigerant charge (kg) = 6 (= 0.03/ 0.005).
- Excess refrigerant charge = 18.16 - 6 = 12.16
60.8g (= 12.16 x 5g) quantity of oil to be added to the system.
0.55l of oil to be added to the system.
In the event of having to add oil, remember the type of oil is synthetic POE.
The original oil charge, including the compressor, is ICI Emkarate RL32-3MAF. This type of oil must also be used
when replacing the oil completely.
If only topping up, RL32-3MAF or Mobil EAC Artic 22C can be used.
• 25 •
FIGURE FOR THE STANDARD UNIT CONFIGURATION FOR MODELS:
Installation, Operation and Maintenance manual • CSC/CSH-MIL153E-1217-05/2018
055D-070D-085D
Advertisement
Table of Contents
