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3. Maintainance
The following instructions must be followed in order to
ensure optimum operation of the Vanvex:
The power supply to the system must
always be switched off and the fan must
have stopped completely before opening the
Vanvex’s cover.
When the unit has been installed for the first time make
sure the water connections are checked after a few days
to make sure there are no leaks. Also check that the
condensate drain is not blocked.
Environmental considerations
When the unit is being serviced or its operation is
cancelled, please make sure to follow the guidelines for
recovery and disposal of all materials according to local
procedures and laws.
3.1 Communication box
To allow Optima 150 to communicate with the computer
(data logger), CTS unit, the “Genvex Datalogger”
communication box must be mounted between the
control panel and the computer/CTS unit. The unit is sold
by Genvex.
3.2 Cooling system and fan
Fan:
Maintaining the fan is mainly periodicly cleaning of the
evaporator. Unscrew the top plate. Clean the evaporator
and fan with a suitable brush. Do not remove the
balancing blocks from the impeller, as this will cause
imbalance and with it more noise and fan wear.
Risk of injury from sharp-edged fins! DO
NOT damage these fins!
Condensed water and condensate drain:
When inspecting and cleaning the fan, it is neccesary
to clean the condensate tray for dirt. Fill water in the
condensate tray and check that the water runs out
unhindered. Should this not be the case the drain must
be cleaned. At the same time make sure that the plates of
the evaporators are clean.
3.3 Watercircuit and tank
Safety valve:
The installer has fitted a safety valve on the cold water
supply pipe for the hot water tank. This valve is a
protection of the tank against excess pressure when the
sanitary water expands during heating. The non-return
valve, which is fitted before the safety valve on the cold
water pipe, prevents the water from flowing back into
the cold water pipe. This means that the pressure in the
tank will increase to the maximum pressure permitted by
the safety valve, at which point it will open and allow the
surplus water to escape. If the safety valve did not open,
the tank would burst.
To make sure that the safety valve is working properly,
it should be inspected several times a year. To do this,
press the spring-loaded arm on the safety valve and
see if water comes out of the valve. Damage caused
by a blocked safety valve is not covered by the Genvex
warranty.
Anode:
In order to prevent corrosion of the enamelled hot water
tank, the tank is fitted with a magnesium anode at the
middle of the tank. This anode has a life expectancy of
2-5 years according to the water quality. It is nevertheless
important to check that the anode is intact at all times.
This should be done by inspecting the anode every 2
years and replacing it if it is corroded and measures only
6-10 mm in diameter. To inspect the anode, turn off the
power supply to the system and remove the cover. The
hot water tank has to be drained before the anode can
be unscrewed. To do this, turn off the cold water supply ,
attach a hose to the drain valve to ensure the water runs
to the nearest drain. When draining the water from the
tank, turn on a hot water tap to prevent negative pressure
in the tank. When the tank is empty, the anode can be
unscrewed and inspected. When the anode has been
fitted again, close the drain cock and turn the valve water
supply back on to fill the tank with water. When the tank
is full and the cover back on, the power supply can be
switched on again.
3.4
Demounting / putting the unit out
of service
The following actions must be taken:
Disconnect the power supply to the unit and disconnect
other connections (demount the water and heat pipe and
drain the tank). Shutoff the fresh water supply valve and
connect a drain hose to the drain valve in order to drain
the water.
