SCM CUBO2 AQUA, Руководство пользователя

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EN
OEM Manual – CUBO
2
AQUA
UMT/WG T MT Rev3.0 – 08/10/2021 Pag. 23-EN
23
10 Recommended Annual Checks
These checks should be carried out in conjunction with the customers’ requirements.
Compressor and Inverter Check
The compressor should inspected:
- unusual sounds
- unusual vibrations
- excessive temperature of the shell
 Check tightness of all electrical terminals.

Check compressor bolting to the base

Control compressor running current is within
compressor data

Check the temperature of the body to detect
possible lack of lubrication. Top up oil if
necessary
Pressure vessels
All vessels should be inspected as per local laws
and customers’ requirements

Inspect insulation for damage and repair as
necessary

Investigate for any signs of corrosion
 Investigate for any presence of leaks
Liquid drier
Liquid drier filter should be replaced every 2 years

Check temperature drop across the filter
Pressure switch and Pressure Relief Valve
High pressure switch must be checked to ensure
the safe operation of the unit.

Test the correct cut out of the HP pressure
switch to ensure activation and reset at correct
pressure
 Functionality of the electrical circuits must be
verified at this point

Pressure Relief Valve
Check the PRV valve is up to date
The PRVs must be tested for refrigerant tightness
and replaced as per manufacturers guidelines or
customers’ requirements/ local legislation
Procedures for Relief valve replacement
Option 1
(STANDARD UNIT with 8L receiver):
single PRV valve connected to a valve with
metal seal
The following procedure requires a new safety
valve available for replacing
1.
Close the evaporator valves and wait the
compressor switches OFF by pump down
2. Turn off the unit via the keypad and main
isolator when the unit stops
3. Remove the top panel and frontal panel
(where there is the GC fan) to easily
access to the receiver compartment
4. The replacement must take place within
15 minutes of closing the ball valve in
front of PRV in order to avoid a pressure
increases in the receiver. You might keep