Viessmann Vitobloc 200 EM-50/81 Operating Instructions Manual page 7

Instructions for operating the CHP
Thermal risks
The combustion engine in the CHP module as well as
the heat extraction components and the exhaust gas
piping downstream may get very hot for operational
reasons and develop temperatures of some hundred
degrees centigrade in exposed areas. The piping and
the components are insulated as far as possible.
However, some spots are freely accessible for instal-
lation and service purposes. They can get very hot
during operations and are not protected against unin-
tentional contact, e.g. measuring nipples for the ex-
haust gas counter pressure.
In the event of a breakdown, the pressure relief valve
can trip and discharge hot cooling water, which may
cause the risk of scalding.
Risks from noise
When working on the CHP module and the sound-
insulating lid is open during operations, e.g. during
trouble-shooting and while maintenance work is car-
ried out, the relevant ear protection must be worn.
Risks from radiation
Electromagnetic fields emanating from generators in
the block-type thermal power station can temporarily
disturb any heart pacemaker in its immediate vicinity.
The signs of a potential disturbance might be dizzi-
ness, palpitations or an irregular pulse. The heart
pacemaker functions normally as soon as the person
wearing it moves away from the generator.
Risks from materials and substances
Like a car, the CHP module will be started with batter-
ies. These batteries are filled with acid which has a
caustic effect. The contact of such acid with the skin
should therefore be avoided under any circumstances
and the relevant safety regulations are to be ob-
served.
The same applies to the glycol-containing cooling
water and the engine lubrication oil. Should you have
come in contact with such materials, wash the affect-
ed parts of the body thoroughly and treat them with
suitable body care products.
Waste gas might escape uncontrollably if there are
leaks in the waste gas system (causing the hazard of
carbon monoxide poisoning). However, it is normally
conducted outside by the extract ventilator cowl
through an extract air duct. Therefore it is important to
watch out for leaks when carrying out service work on
the open machine and to ensure that the sound-
absorbing hood is closed during operation.
VITOBLOC 200 Operating instructions for the natural gas-fuelled CHP module
Risks from breakage during operation
Exercise particular care and attention when lifting the
CHP modules on a crane hook or on their lifting eyes.
In the event of a breakage, thermally overloaded
components may develop leakages, so that hot en-
gine oil, but also heating or cooling water may get
discharged as a result of burst hoses or broken-off
measuring nipples.
It cannot be excluded under extremely rare circum-
stances that an engine breaks, as it can happen with
cars as well, so that fragments are catapulted through
the air.
Parts containing exhaust gas may get leaky and toxic
carbon dioxide may get discharged in the event of a
breakage/rupture or as a result of corrosion. Please
switch off (shut down) the CHP module immediately
and activate the ventilation.
The personal protective clothing includes
ear protection (when working with the sound-
insulating lid open during operations);
protective gloves and goggles, when handling battery
acid, glycol and engine lubrication oil.
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