Annual Maintenance Services; Hydraulic Circuit; Electrical; Outdoor Unit - Fujitsu WATERSTAGE 112 Maintenance Document

Heat Pump, Split System, Single Service, 3 phase

7 Annual Maintenance Services

7.1

Hydraulic Circuit

•
clean filter (if any)
•
inspect heating system (system pressure,
purging, leak test)
•
inspect expansion vessel (preload with nitrogen
at 1 bar)
•
fix any leaks
7.2

Outdoor unit

•
clean heat exchanger
•
clean refrigeration and ventilation compartment
•
check for correct condensation drain
•
conduct refrigeration circuit leak test (required if
charged > 2 kg)
Maintenance Document 1394-1
7.3

Electrical

•
Inspect connections
appropriate
•
Check condition of wires and boards
7.4

Operating checks

•
conduct refrigeration readings at temperatures
•
in case of malfunction, install pressure gauges
for refrigeration diagnosis
•
check voltage, current and control
and tighten where
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