Daikin EUWAC5FZW Сервис мануал онлайн [254/264] 524370

Daikin EUWAC5FZW Сервис мануал онлайн [254/264] 524370
ESIE-0302 Maintenance
Part 5 – Maintenance 5–5
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5
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5
Expansion valve The expansion valve will allow the correct amount of refrigerant to enter the evaporator to match the
cooling load (by keeping a constant superheat). Follow the instructions below to check the expansion
valve.
Check the superheat setting.
Inspect the bulb / power-head capillary connection (no chaffing).
Inspect the equaliser line visually.
Inspect the feeler bulb suction pipe connection / insulation.
Flow switch and
pump interlock
Follow the instructions below to check the flow switch and the pump interlock.
Check operation by ohmmeter after disconnecting the wires to the field terminals and simulating
flow and no-flow conditions.
Inspect the flow-switch for possible corrosion (glycol applications). Check electrical connections for
shunts or bridges.

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