Operation And Maintenance - Parker Hiross Hypercool WRN Series User Manual

Take particular care with sulphur, ammonia, chlorine and
installations in marine environments. For further advice or as-
sistance consult the manufacturer.
f) Support the air/gas inlet and outlet pipes if they strain the
connection ports and/or fl anges.
g) If the unit is installed in a seismic zone, install suitable devices
to protect against seismic activity.
h) Install fi re-prevention and fi re-fi ghting equipment suitable
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 IN-
LET AND OUTLET LABELS.
AIR/GAS CONNECTIONS: Attach the compressed air piping to
the threaded / fl anged connections on the apparatus (if non-stand-
ard fl anges are used, ensure that their internal diameter allows a
free air passage to all the aft ercooler's tubes).
Th e apparatus must be installed immediately down-streamof the
compressor, and with the separator down-stream of the aft ercool-
er.
WATER CONNECTIONS: Attach the cooling water piping to the
aft ercooler's threaded/fl anged connections.
Ensure the following:
• Th e water inlet must always be below the water outlet (to
maximize performance and allow water to drain out when
idle).
• Th e 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
install 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
detector (eg. visible discharge to drain, sight glass, etc.) or an
automatic compressor shut-down device.
2

5. Operation and maintenance

Maintenance must only be performed by specialist
personnel.
FOR SEPARATOR SEE RESPECTIVE MANUAL.
Th e 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 aft ercooler when it is not in opera-
tion (to prevent ice formation).
Maintenance program
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 aft ercooler's tubes, using suitable solvents. Aft er-
wards thoroughly dry the insides of the tubes using compressed
air.
Check for signs of corrosion, in which case contact the author-
ised inspector or the supplier for authorisation to continue using
the unit.
frequency: Aft er 1000-1200 hours of operation, and thereaft er
as appropriate according to the degree of encrustation (ie. the
water hardness and temperature).
operation: Dismantle the aft ercooler 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. Aft erwards thoroughly dry the insides of the
tubes using compressed air.
NOTE: It is advised to stock a spare set of gaskets.
WRN/WRC/WRS/WRA/WRP
AIR/GAS CIRCUIT
WATER CIRCUIT
English