Danfoss Optyma OP-HJM064D20Q Manual De Instrucciones página 3

Instructions
6 – Dehumidification via vacuum
• Never use the compressor to generate vaccum
for the system.
• Connect a vacuum pump to both the LP and
HP sides.
• Generate a stable vacuum of 500
(0.67 mbar).
• Do not use a megohmmeter or start the
compressor while it is under vacuum as this
may cause internal damage.
7 – Electrical connections
• Disconnect and isolate the main power supply
before connecting any devices.
• Secure the power outlet to prevent accidental
connection during installation.
• All electrical components must be selected in
accordance with compressor requirements as
well as with local rules and regulations.
• Refer to the wiring diagram for more
information on electrical connections.
• Make sure that the power supply matches the
unit's speci cations and that the power supply
is stable (nominal voltage ±10% and nominal
frequency ±2.5 Hz).
• Dimension supply cables according to the
unit's current and voltage speci cations.
• Ensure that power is being supplied and that
the unit is properly grounded.
• Install the power outlet in accordance with
local rules and regulations.
• The unit is equipped with high and low pressure
switches that immediately cut power to the
compressor when triggered. The high and
low pressure cut-out values are preset on the
pressure switches, according to the compressor
installed in the unit.
8 – Refrigerant charge in system
• Use personal protective equipment (PPE),
such as safety goggles and gloves.
• Never start the compressor while it is under
vacuum. Keep the compressor switched o .
• Before charging the system with refrigerant,
verify that the oil level is between ¼ and ¾
using the compressor oil sight glass. If more oil
is needed, refer to the compressor label for the
correct oil type.
• Use only the refrigerant for which the unit is
designed.
• Fill refrigerant in liquid state through the
condenser or liquid reservoir. Make sure to
slowly charge the system to between 4 and
5 bar for R404A/R507A/R448A/R449A/R452A/
R513A or R22, and to approx. 2 bar for R134a.
• Do not charge refrigerant liquid through the
suction line.
• Do not mix oil or coolant with additives.
• The remaining charge must be supplied until
the system has reached a level where nominal
conditions are stable during operation.
• Never leave the charging cylinder connected to
the circuit.
9 – Checking before commissioning
If necessary, use safety devices, such as
pressure switches or pressure relief valves, in
accordance with local legislation and safety
regulations. Make sure to select proper, well-
regulated safety devices that function normally.
Make sure that the settings of the high-
pressure switches and pressure relief valves do
not exceed the maximum operating pressure
of any system component.
• Make sure that all electrical connections are
tight and compliant with local codes.
• The crankcase heater must be turned on at
least 12 hours before initial commissioning and
after long periods of downtime.
© Danfoss | DCS (CC) | 2022.05
10 – Commissioning
• Never start the unit unless the refrigerant liquid
has been charged.
• All service valves must be in the open position.
• Make sure that the unit's voltage and frequency
m Hg match those of the power supply.
• Check that the crankcase heater is working
properly.
• Check that the fan can rotate freely.
• Equalize the high and low pressure sides.
• Turn on the unit. It should start immediately.
If not, check the wiring, connections, and
terminals.
11 – General function checks for compressor
• Check the rotation direction of the fan. Air must
be able to ow from the condenser to the fan.
• Check the power consumption and voltage.
• Check for suction overheating to reduce the
risk of water hammering.
• Note the oil level at start-up and during
operation, making sure that the oil level gauge
remains visible.
• Do not exceed operating limits.
• Check for abnormal vibration. Vibrations
greater than 1.5 mm in amplitude require
corrective measures, such as pipe clamps.
• Where necessary, a complementary charge
of refrigerant can be added on the low-
pressure side, as far away as possible from the
compressor suction, which must be operating
throughout the entire process.
• Do not overcharge the system with refrigerant.
• Never release refrigerant into the atmosphere.
• Before leaving, conduct a general inspection
of the installation site, making sure it is clean
and that there are no noise or leaks.
• Note down the type and amount of refrigerant
charge as well as operating conditions to serve
as reference for future inspections.
12 – Maintenance
Always switch o the unit using the main
switch before handling the fan.
Both the internal pressure and the surface
temperature are hazardous and can cause
permanent injury. Maintenance technicians and
installers must have the necessary skills and
tools. The temperature of the pipes can exceed
100°C, which may cause severe burns.
To ensure system reliability, make sure that
periodic maintenance inspections are performed
in accordance with local regulations.
The following periodic
recommended to avoid system-related problems:
• Check that safety devices are adjusted correctly
and working properly.
• Ensure that the system is leak-tight.
• Check the electrical current to the compressor.
• Con rm that the system functions in a manner
consistent with the maintenance records and
preceding conditions.
• Check that all electrical connections are tight.
• Keep the unit clean and check for rust on
components, pipes, and electrical connections.
The condenser should be checked for soiling
at least once a year and cleaned whenever
necessary. The microchannel condenser tends
to collect dirt on the surface and not inside,
making it easier to clean compared to nned
tube condensers.
• Turn o the unit using the main circuit breaker
before removing any parts of the condensing
unit.
• Remove
from the surface using a vacuum cleaner
equipped with a brush or similar accessory.
Alternatively, you can use compressed air to
blow out the condenser, from inside to outside,
then use a soft brush to brush o the condenser.
Do not use a wire brush. Do not rub or scratch
the condenser with the suction hose or nozzle.
If the system has been opened, add nitrogen
to remove moisture, then install a new
drier. If it is necessary to put the system under
vacuum, this must be done in such a way that
no refrigerant escapes into the environment.
13 – Warranty
When making a warranty claim, always state
the model and serial number of the product. The
product warranty may be voided in the following
cases:
• Missing label bearing the product's serial
number and model.
• External modi cations, e.g., drilling, welding,
broken anchors, and impact marks.
• Compressor unit opened or returned with seal
broken.
• Oxidation, water, leak detection dye, or other
foreign material inside the compressor.
• Use of a refrigerant or lubricating oil not
approved by Danfoss.
• Failure
installation, maintenance, and operation of
the unit.
• Use in mobile applications.
• Use in hazardous areas (explosive atmospheres).
• There is no model or serial number on the
warranty claim.
• Check the local warranty policy for additional
conditions.
14 – Disposal of waste
Danfoss
compressor oil, as well as the parts and
components of the condensing unit,
recycled
companies at their own facilities.
maintenance is
dirt, leaves, bers,
to follow recommendations
recommends having
by specialized recycling
AN45482581483401-010101 | 3
etc.
lter
for
the