Preliminary Checks - Riello NXHP Series Installation, Operation And Maintenance Instructions

1 - INTRODUCTION
Periodically inspect all valves, fittings and
pipes of the refrigerant and hydraulic circuits
to ensure that they do not show any corrosion
or any signs of leaks.
It is recommended to wear ear protections,
when working near the unit and the unit is in
operation.
Always ensure you are using the correct
refrigerant type before recharging the unit.
Charging any refrigerant other than the
original charge type (R-290) will impair
machine operation and can even lead to a
destruction of the compressors. The
compressors operate with R-290 and are
charged with mineral oil.
Before any intervention on the refrigerant
circuit, the complete refrigerant charge must
be recovered.
The machine is operated from the human
machine interface.
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1.3 - Preliminary checks

Check equipment received :
■ Inspect the unit for damage or missing parts. If damage is
detected, or if shipment is incomplete, immediately file a claim
with the shipping company.
■ Confirm that the unit received is the one ordered. Compare the
name plate data with the order.
■ The name plate is attached to the unit in two locations:
- On the outside on one of the unit sides
■ The unit name plate must include the following information:
- Model number - size
- CE marking
- Serial number
- Year of manufacture, pressure and leaktightness test date
- Fluid being transported
- Refrigerant used
- Refrigerant charge per circuit
- PS: Min./max. allowable pressure (high and low pressure
side)
- TS: Min./max. allowable temperature (high and low pressure
side)
- Unit leak test pressure
- Voltage, frequency, number of phases
- Maximum power input
- Unit net weight
■ Confirm that all options ordered for on-site installation have
been delivered, and are complete and undamaged.
The unit must be checked periodically, if necessary removing
the insulation (thermal, acoustic), during its whole operating
life to ensure that no shocks (handling accessories, tools,
etc.) have damaged it. If necessary, the damaged parts must
be repaired or replaced. See also chapter §5. Maintenance.
Always make sure that all the panels of the unit are close before
powering up the unit (fan grid, top panel and compressor side panels).
B
C
D
Legend:
B Air inlet
C Fan grid
D Nameplate
B
C
D