Quincy Compressor QED-1250, Инструкция, Страница: 98 / 116

Item Action
Ventilation For water-cooled dryer:
• The inlet grid(s) (1) and ventilation fan (2) (if provided) should be installed in such
a way that natural circulation of air is guaranteed.
• The minimum air temperature at the dryer cooling opening is 0 ˚C (32 ˚F),
maximum air temperature at the dryer cooling opening is 40 °C (104 °F).
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 being by-
passed.
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.
Water cooling For water-cooled dryer:
• Connect the water cooling pipes to the marked inlet and outlet connections.
• It is recommended to fit a manual shut-off valve and drain in the water inlet and
outlet (customer's installation).
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.
4.4 Electric cable size and fuses
Important
Local regulations remain applicable if they are stricter than the values proposed.
For 50 Hz dryers, the settings of the main fuses below are according to Directive
2014/35/EU (low-voltage directive) EN60204, 2014/30/EU electromagnetic compatibility.
The cable size is valid for cable PVC 70 ˚C (158 ˚F) at an ambient temperature of 40 ˚C
(104 ˚F).
For 60 Hz dryers, the settings of the main fuses below are according to CSA standards
C22.2 Nos. 0; 0.4; 0.5; 0.12; 14; 68 and UL508. The cable size is valid for cable 90 ˚C (194
˚F) at an ambient temperature of 40 ˚C (104 ˚F).
Instruction book
96 2920 1992 00