Maintenance; Weekly Check - Panasonic 140 Installation And Maintenance Manual

17. Maintenance

The user is responsible for ensuring that the unit is in perfect working order and that the technical
CAUTION installation and minimum maintenance operations have been performed by a qualifi ed technician in
accordance with the procedures described in the present manual.
Depending on actual operational constraints and regulatory changes, the installer might recommend increased maintenance
operations and more frequent inspections.
Simple preventive maintenance ensures longevity of your ECOi-W:
• Better refrigeration performance
• Reduced power consumption
• Accidental component breakage prevention
• Prevention of heavy, late, and expensive interventions
• Environment protection
All refrigerating fl uid charging, sampling and draining operations must be performed by a skilled technician
using equipment adapted to the unit, in agreement with authority regulation in effect on site.
CAUTION
Any inappropriate handling may cause uncontrolled fl uid venting into the atmosphere.
WARNING Isolate unit from power supply before working on unit.
Opening the refrigeration circuit then involves vacuum drawing, checking the circuit sealing and recharging
WARNING refrigerating fl uid. For any intervention on the refrigerating fl uid circuit, fi rst drain the unit's charge using a
refrigerating fl uid collection station.

17.1. Weekly check

Inspect the entire running installation, while paying particular attention to:
• any damage on the ECOi-W housing
• any traces of oil (sign of refrigerating fl uid leak)
• any water leak
• the presence of removed protections, doors or lids improperly closed
• the coil's cleanliness.
Check:
• the oil level of the compressors (use sight glass on the oil equalization pipe of the tandem compressors)
• the humidity rate of the refrigerating fl uid using the fl uid indicator
• the operating pressure of the installation
• the water temperature at the plate exchanger inlet and outlet.
When the ECOi-W is running, perform an audible sound check of the compressors, pump and fans. Also check that no
vibration can cause breakage or wear by vibrating contact.
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