Maintenance Guide - Panasonic WH-ADC0916G9E8 WH-UX09FE8 Service Manual

16. Maintenance Guide

In order to ensure safety and optimal performance of the Tank Unit, seasonal inspections on the Tank Unit, functional
check of RCCB/ELCB, field wiring and piping have to be carried out at regular intervals. This maintenance should be
carried out by authorized dealer. Contact dealer for scheduled inspection.
1 Charging and Discharging the Water
Make sure all the piping installations are properly done before carry out below steps.
Charge the Water

For domestic hot water tank
a. Set the Domestic Hot Water Tank Discharge Valve to "CLOSE".
b. Set all Tap / Shower "OPEN".
c. Start filling water to the Domestic Hot Water Tank via Tube Connector. After 20~40min, water should
flow out from Tap / Shower. Else, please contact your local authorized dealer.
d. Check and make sure no water leaking at the tube connecting points.

For Space Heating / Cooling
a. Turn the plug on the Air Purge Valve outlet anticlockwise by one complete turn from fully closed
position.
b. Set the Pressure Relief Valve level "DOWN".
c. Start filling water (with pressure more than 0.1 MPa (1 bar)) to the Space Heating / Cooling circuit via
Tube Connector. Stop filling water if the free water flow through Pressure Relief Valve Drainage.
d. Turn ON the Tank Unit and make sure Water Pump is running.
e. Check and make sure no water leaking at the tube connecting points.
Discharge the Water

For domestic hot water tank
a. Turn OFF power supply.
b. Set the Domestic Hot Water Tank Discharge Valve to "OPEN".
c. Open Tap / Shower to allow air inlet.
d. After discharge, set Hot Water Tank Discharge Valve to "CLOSE".
2 Check Water Pressure
Water pressure should not lower than 0.05 MPa (with inspects the Water Pressure Gauge). If necessary add
water into Tank Unit (via Tube Connector).
3 Check Pressure Relief Valve
Check for correct operation of Pressure Relief Valve by turning on the lever to become horizontal.
o
If you do not hear a clacking sound (due to water drainage), contact your local authorized dealer.
o
Push down the lever after finish checking.
o
In case the water keep on draining out from the Tank Unit, switch off the system, and then contact your
o
local authorized dealer.
C " L O S " E
Domestic Hot Water Tank Discharge Valve
Air purge valve c
Lever
Turn up
Pressure relief valve d
*(0.1 MPa = 1 bar)
" O P E " N
g
Plug (turn
anticlockwise by
one complete turn)
Pressure relief
valve d
101