Table of Contents
Advertisement
6 START
6.1 Machine start-up
Commissioning must be carried out by a specialist Engineer, in the presence of the Installer and an experienced Operator.
The specialist Engineer will test the equipment, carrying out checks, calibrations and commissioning according to the applicable
procedures falling under their responsibility.
The experience Operator must address questions to the specialist Engineer in order to acquire the necessary information to be able
to carry out the control and operation activities that will fall under their responsibility.
Before start-up, ensure the following:
o
Check maintenance clearances and safety distances;
o
Measure the absorption of the fans by comparing the value with the indications in the Data Book;
o
Check the power supply voltage. Check that the mains voltage does not exceed +/- 10% of the machine nominal value;
o
Check the unbalancing between the phases. Check that the unbalancing between the phases does not exceed 2%;
o
Otherwise, contact the electricity distribution company to solve the problem;
o
When the machine is fully loaded, measure condensation pressure and subcooling values;
o
Check for coolant leaks.
7 METHOD OF USE
7.1 Provisions and warnings for use
The day-to-day use of the equipment does not require the presence of the operator, who must only intervene to carry out regular
checks, in case of emergency, or in case of planned starts and stops.
If these activities are carried out consistently and correctly, good long-term performance of the machine and the equipment will result.
INFORMATION:
Failure to comply with the procedures can cause bad operation of the machine and the system as a
whole, resulting in early deterioration.
INFORMATION:
The machine runs automatically and is controlled by the main machine.
7.2 Emergency stop
Considering that there are no directly accessible moving parts in the machine, there is no need to install an emergency stop device.
In any case, if installed this device would not reduce the risk as the emergency stop would be identical to the normal stop using the
main switch.
7.3 Prolonged shutdowns of the machine
In case of extended machine inactivity (e.g. seasonal shutdown), the specialist Engineer must:
•
check the condition of pressure vessels;
•
carry out a leak test on the system;
•
opening of the line circuit breaker;
•
close the shut-off valves.
Installation, use and maintenance manual
41
Advertisement
Table of Contents
