hajdu STXL300 Series, Инструкция по установке и эксплуатации

Страница: 30 / 40

30
8.1. Combined safety valve
Before putting into use, check if the outlet of the valve is blocked, and if
flow towards the open airspace is ensured during the operation of the
valve. The outlet must look downwards.
At least every two months, blow off the valve by turning the blow-off button
of the safety valve in the direction indicated by the arrow. This will clean
the valve seat of any possible sand deposit, preventing its adhesion. The
leakage of the valve while in operation is a functional phenomenon. If the
leakage does not stop when the heating is switched off, have the appliance
checked by a technician. In such cases, you are advised to request the
annual inspection of the product if it is due anyway.
8.2. Discharging of water from the tank
When discharging water, hot water may leave the appliance!
The discharging of water can be performed viathe outlet by
turning the blow-off knob of the combined safety valve in the direction
indicated by the arrow. Before discharging water, close the closing valve of
the water network, and the cold water tap, but leave the hot water tap open
throughout the time of discharging.
8.3. Descaling
Depending on the quality of water, scale may deposit on the radiator and the tank,
whereby descaling should be performed every two years. Descaling requires the emptying
of the tank, the disconnection of the electrical circuit and the removal of the service cover.
After removing the service cover, it is recommendedto perform reassembling using a new
sealing. When cleaning, avoid damaging the protective surface finish.
Descaling is
considered to be part of the maintenance, and it does not belong to the activities covered
by guarantee. At STXL300CE type however, due to the necessity of disconnecting the
circuit, putting back into operation must be performed by an authorised service station
(along with the review of the electrical connections).
8.4. Thermostat (for STXL300CE type)
This hot water tank is a high-quality, well-built, regulated and verifi ed appliance. Its sole
function is to keep or limit water temperature at a chosen value. The thermostat of the
hot water tank is sealed and no re-adjustments or repairs should be done, for any reason,
in addition to those performed at our plant, except for normal adjustment by turning the
knob, which should be performed by a professional after commissioning and disconnection
of the unit. Failure to observe this provision will cause loss of warranty coverage.