Operation And Maintenance - Parker Hiross Hypercool WRN Manuel D'utilisation

for the area in which the unit is installed in order to protect it
against fi re.
i) If operating temperature exceeds 60°C, fi t any protective
guards necessary to prevent accidental contact and burns.
RESPECT THE DIRECTION OF THE AIR/WATER INLET AND
OUTLET LABELS.
AIR/GAS CONNECTIONS: Attach the compressed air piping to the
threaded / fl anged connections on the apparatus (if non-standard
fl anges are used, ensure that their internal diameter allows a free
air passage to all the aftercooler's tubes).
The apparatus must be installed immediately down-streamof the
compressor, and with the separator down-stream of the after-
cooler.
WATER CONNECTIONS: Attach the cooling water piping to the
aftercooler's threaded/fl anged connections.
Ensure the following:
• The water inlet must always be below the water outlet (to max-
imize performance and allow water to drain out when idle).
• The water must drain away freely (to prevent water entering
the compressed air tubing in the event of a fracture).
• For closed water circuits, ask for separate instructions and in-
stall a safety valve (set at a pressure below the maximum safe
pressure of the weakest point in the circuit).
• Guarantee a constant water fl ow and install a water fl ow de-
tector (eg. visible discharge to drain, sight glass, etc.) or an au-
tomatic compressor shut-down device.
2
WRN/WRC/WRS/WRA/WRP

5. Operation and maintenance

Maintenance must only be performed by specialist personnel.
FOR SEPARATOR SEE RESPECTIVE MANUAL.
The temperature of incoming fl uids, must never exceed the maxi-
mum value specifi ed on the data plate. If temperatures exceed the
specifi ed values, contact the manufacturer for further information.
Avoid subjecting the unit to thermal stress caused by repeated
fl uctuations in incoming fl uid temperature.
To guarantee optimum operation, ensure that the maintenance
program below is performed regularly, and that the following rules
are respected:
• Ensure a constant water fl ow.
• Respect the fl uid temperatures specifi ed at the time of pur-
chase of the unit; if this is not possible, contact the manufac-
turer for further information.
• Avoid rapid scaling by keeping thewater outlet temperature as
low as possible.
• Drain all water out of the aftercooler when it is not in operation
(to prevent ice formation).
Maintenance program
AIR/GAS CIRCUIT
frequency: Every 1000---8000 hours of operation, depending
on air quality and compressor type.
operation: Remove the carbon, tars and dust, formed on the
insides of the aftercooler's tubes, using suitable solvents. Af-
terwards thoroughly dry the insides of the tubes using com-
pressed air.
Check for signs of corrosion, in which case contact the author-
ised 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 encrustation (ie. the
water hardness and temperature).
operation: Dismantle the aftercooler and clean both the tube
bundle (1 - Fig. 1) and casing (3) as follows:
First cleanwith a high pressure water jet and then place in a
warm chemical bath (containing a mild descaling agent). Finally
rinse with water. Afterwards thoroughly dry the insides of the
tubes using compressed air.
NOTE: It is advised to stock a spare set of gaskets.
English