Panasonic ADC0309H3E5 Installationshandbuch Seite 11

PROPER PUMP DOWN PROCEDURE
WARNING
Strictly follow the steps below for proper pump down procedure.
Explosion may occur if the steps are not followed as per sequence.
1. When the Tank Unit is not in operation (standby), press the
"SERVICE" switch on the Remote Controller 1 to enter
SERVICE mode. Operate the system in Sr : 01 mode for pump
down operation.
2. After 10~15 minutes, (after 1 or 2 minutes in case very low
ambient temperatures (< 10°C)), fully close 2 way valve on
Outdoor Unit.
3. After 3 minutes, fully close 3 way valve on Outdoor Unit.
4. Press the "OFF/ON" switch on the Remote Controller 1 to
stop pump down operation.
5. Remove the refrigerant piping.
CHECK ITEMS
Is the Tank Unit properly installed on the concrete fl oor?
Is there any gas leakage at fl are nut connections?
Has the heat insulation been carried out at fl are nut
connection?
Is the Pressure Relief Valve b operation normal?
Is water pressure higher than 0.05 MPa?
Is the water drainage work properly done?
Is the power supply voltage within the rated voltage range?
Is the cables being fi xed to RCCB/ELCB and terminal
board fi rmly?
Is the cables being clamped fi rmly by holder (clamper)?
Is the earth wire connection properly done?
Is the RCCB/ELCB operation normal?
Is the Remote Controller 1 LCD operation normal?
Is there any abnormal sound?
Is the heating operation normal?
Is the Tank unit water leak free on test run?
Is the Safety Relief Valve knob turned for releasing air?
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