59(63)
2) Check the filter elements; replace it after a 3,000~4,000 working hours.
6.4.5.3 Regeneration Air Adjustment
Regeneration air changes according to the operation condition (e.g. inlet
pressure, outlet flow). The regeneration air should be enlarged when the inlet
pressure decreases, the inlet temperature increases or in summer, vice verse.
Notice that the quantity of regeneration air is very important to the dryer. Too
small regeneration air quantity will lead to improper operation.
6.4.5.4 Controller
No need of maintenance, replacement can be done in the working field.
6.4.5.5 Drying Tower
With a welded structure, if damaged, a new one must be purchased.
6.4.5.6 Improper Operation
E.g.: low inlet pressure, high air temperature, large outlet flow; the dryer
continues to work after the outlet valve shut down for several hours; regenerate
overwet hopper, etc..
6.4.5.7 Oil Pollution
Oil pollution will cause complete failure of adsorbent. If there is oil in the drying
tower or other parts, the adsorbent must be replaced. Other proper
maintenance is also imperative.
6.4.5.8 Adsorbent Replacement
The service life of the adsorbent is 2 year. Adsorbent replacement is a must if
the dust at the outlet increases or the dew-point decreases obviously. Replacing
steps are as follows:
1) Power off; release the pressure in the dryer.
2) Dismantle the muffler and solenoid valve.
3) Unscrew the copper connector on the dryer beside the regeneration valve
and the two oil screws on both ends of the drying tower.
4) Unscrew the T-joint (four in total) on both ends of the drying tower.
5) Put a M6
×
100 screw in the tower and connect it to the M6 screw nut on the
Summary of Contents for SDL-U Series
Page 1: ...SDL U HD Series Heatless Dehumidifying Compact Dryer Date Nov 2014 Version Ver B English...
Page 2: ......
Page 11: ...11 63 1 3 2 Outline Drawing Picture 1 1 Outline Drawing...
Page 17: ...17 63 Picture 2 1 Working Principle...
Page 27: ...27 63 2 3 2 Main Circuit SDL 20U 450U HD Picture 2 6 Main Circuit SDL 20U 450U HD...
Page 28: ...28 63 2 3 3 Control Circuit SDL 20U 450U HD Picture 2 7 Control Circuit 1 SDL 20U 450U HD...
Page 29: ...29 63 Picture 2 8 Control Circuit 2 SDL 20U 450U HD...
Page 38: ...38 63 Picture 2 10 Main electrical circuit SDL 600U 1200U HD...
Page 39: ...39 63 2 3 7 Control circuit SDL 600U 1200U HD Picture 2 11 Control circuit 1 SDL 600U 1200U HD...
Page 40: ...40 63 Picture 2 12 Control circuit 1 SDL 600U 1200U HD...