10
WFB
English
WATER CONNECTIONS: Fix the water pipes to the
threaded/flanged connections of the refrigerant. Ensure
the following:
S
The water inlet must always be below the water outlet
(to maximize performance and allow water to drain out
when idle).
S
The water must be able to drain freely (so that it does
not seep into the gas pipe in case of possible breaka-
ges).
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For closed water circuits, ask for separate instructions
and install a safety valve (set at a pressure below the
maximum safe pressure of the weakest point in the cir-
cuit).
4 Operation and maintenance
Maintenance must be carried out by specialised person-
nel provided with special personal protection devices.
FOR SEPARATOR SEE RESPECTIVE MANUAL.
The temperature of incoming fluids, must never exceed
the maximum value specified on the data plate. If tempe-
ratures exceed the specified values, contact the manufac-
turer for further information.
Avoid subjecting the unit to thermal stress caused by re-
peated fluctuations in incoming fluid temperature.
To guarantee optimum operation, ensure that the main-
tenance program below is performed regularly, and that
the following rules are respected:
S
Ensure a constant water flow.
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Respect the fluid temperatures specified at the time of
purchase of the unit; if this is not possible, contact the
manufacturer for further information.
S
Avoid rapid scaling by keeping the water outlet temper-
ature as low as possible.
S
To prevent ice from forming, drain all the water from
refrigerant when not in use, or add a suitable quantity
of glycols.
Maintenance program
GAS CIRCUIT
frequency:
Every 1000---4000 hours of operation,
depending on the quality of the fluid treated.
operation:
Remove the carbon, tars and dust, formed
on the insides of the aftercooler’s tubes, using suitable
solvents. Afterwards thoroughly dry the insides of the
tubes using compressed air.
Check for signs of corrosion, in which case contact the
authorised inspector or the supplier for authorisation
to continue using the unit.
WATER CIRCUIT
frequency:
After 1000---1200 hours of operation, and
thereafter as appropriate according to the degree of en-
crustation (ie. the water hardness and temperature).
operation:
Connect a pump to the aftercooler’s water
inlet and outlet and then clean the circuit by pumping
through a chemical descaler. Afterwards rinse by
pumping through with water.
ALWAYS CLEAN IN THE OPPOSITE DIRECTION
TO THE COOLING WATER FLOW.
NOTE:
It is advised to stock a spare set of gaskets.
