Atag iSteel 120, Руководство по установке

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FAULT FINDING INFORMATION
UNVENTED CYLINDER
Symptoms Possible causes Follow up action
Cylinder appears to leak
from within the case.
Loose cylinder Connection.
Check all connection points including
immersion heaters to ensure integrity
of joint and remake any suspect joints.
Expansion valve operates
and water is visible at the
Tundish.
Possible fault at Pressure Reducing
valve. Follow fault finding information for
Inlet Control Group.
Back pressure from the system.
Check all mixer type outlets are served
by a balanced cold service. Where not
re-pipe or install bespoke pressure
reducing valve to offending outlet.
Expansion valve operates
when cylinder is heated.
Possible fault at Expansion Vessel.
Follow fault finding information for
Expansion Vessel.
Noise when operating tap
outlet.
Insecure pipework. Increase the number of pipe clips.
Reduced Water flow.
External work to public mains. Wait for works to be completed.
Debris from water mains.
Strip & Clean or replace Inlet Control
Group.
Pressure reducing valve sticking.
Strip & Clean or replace Inlet Control
Group.
No hot water available.
Immersion heater failure.
Follow fault finding information for
immersion heater.
Boiler failure.
Check operation of the boiler and its
controls.
EXPANSION VESSEL
Symptoms Possible causes Follow up action
Discharge of water from the
relief valve.
Expansion Vessel is too small.
Vessel needs resizing and installation by
appropriately qualified engineers.
Pre-charge set incorrectly on vessel
installation.
Pre-charge requires setting while
system is de-pressurised according to
cylinder manufacturer’s
recommendations.
Membrane is ruptured and may require
replacement.
Replace membrane or entire vessel.
Inspect Shrader valve for leaks or
damage.
Membrane may be partially
de-pressurised due to natural losses
and require re-pressurisation.
Re-pressurise or consider replacement
depending on ae of vessel and amount
of pressure lost. Inspect Shrader valve
for leaks or damage.
Leak from flange or water
connection.
Failure of Flange Plate. Replace Flange Plate or entire vessel.
Loss of torque in Flange retaining bolts. Re-tighten bolts as needed.
Ruptured membrane has caused
corrosion of vessel body resulting in
pinhole leak.
Entire vessel must be replaced. Inspect
Shrader valve for leaks or damage.
Vessel appears to be full of
liquid when system is cold.
Membrane is de-pressurised.
Replace membrane or entire vessel.
Inspect Shrader valve for leaks or
damage.
Water is discharged from
vessel when Shrader pin is
de-pressed for inspection of
air pressure.
Membrane is ruptured.
Membrane or vessel requires
replacement.