Quincy Compressor QED 650, Instruction And Maintenance Manual

Page: 83 / 99

Item Action
Dryer • The unit should be installed on a level floor capable of taking the weight of the dryer.
• Distances between units and walls stated are minimum.
Ventilation • Provide free space above the dryer.
• The inlet grid(s) (1) and ventilation fan (2) (if provided) should be installed in such a
way that any recirculation of cooling air to the dryer is avoided.
• The required ventilation to limit the dryer room temperature is:
• For QED 650: 3180 cfm (1500 l/s)
• For QED 850: 4660 cfm (2200 l/s)
• For QED 1050: 6780 cfm (3200 l/s)
• The air velocity to the grid(s) has to be limited to 5 m/s (16.5 ft/s).
• Install the dryer where the ambient air is as clean as possible and where the
temperature of the air will never exceed the limits: minimum air temperature at the
dryer cooling opening of 32 ˚F (0 ˚C), maximum air temperature at the dryer cooling
opening 115 °F (46 °C).
• Keep the ventilation gratings of the dryer free. If necessary, take action to avoid
external influences (wind, draughts, etc.) through the ventilation gratings of the dryer,
as they may disturb the cooling air flow.
For the reference of components, see the section Installation proposal .
Air
•
Connect the compressed air lines to the marked inlet and outlet pipes of the dryer.
• Provide an air inlet valve and outlet valve.
• If a by-pass pipe and valve are installed, the dryer can be serviced while by-passing
the dryer.
Drain pipes • Each drain pipe must be individually connected to the waste pipe.
• Lay out the condensate drain pipes via a funnel towards the waste pipe to allow visual
inspection. The pipes must slope downwards. For draining of pure condensate, install
an oil/water separator; consult your Customer Centre.
• If the condensate drain pipes have been fitted outside the compressor room where
they may be exposed to freezing temperatures, they must be insulated.
Electrical
connection
•
Check that the primary side connections of transformer (T1) correspond with the
supply voltage.
• See the section Electric cable size and fuses for the recommended fuses and cable
size of the supply cables.
• Check that the electrical installation corresponds to the local codes. The dryer must
be earthed and protected against short circuits by fuses of the inert type in all phases.
• An isolating switch must be installed near the dryer.
• The unit is provided with a phase sequence relay. When the dryer does not start, switch
off the voltage and reverse two incoming electric lines.
• All pipes should be installed stress-free to the dryer unit.
• All pipes should be installed so that there is no obstruction accessing the unit through the
removable panels.
Instruction book
82 2920 1818 00