Maintenance Item |
Frequency |
Work Details |
Notes |
(1)
Cooling Water
(on water-cooled types only) |
Daily |
Check to see if pressure of inlet port is below 0.49 MPa. Also, check to see if cooling water is running.
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When cooling water is not running, dew point may not drop leading to drying defects. |
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(2)
Temperature Controller |
Check to see if drying temperature is controlled at set temperature. Also, check if regeneration temperature is at 356 ~ 428 degrees F (180 ~ 220 degrees C). |
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Check drying temperature by pressing the "SV" switch. To check the regeneration temperature, press "Reset" and "SV" at the same time. Display is shown while switches are pressed. |
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(3)
Hose |
Weekly |
Check disconnections or air leaks. |
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If hose is damaged, replace with new hose. |
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(4)
Filter |
Check clogging. If clogged, remove filter and blow dry air to remove particles. |
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Unit should be cooled, and have blowers idle (stopped) before checking the filters. |
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When cleaning with blowing dry air, particles will scatter in air. Wear a mask while working. |
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If filter is clogged, it may lead to inconsistencies in operation, temperature and air flow. This in turn may lead to fire hazards. Extra caution is required. |
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Environment surrounding dryer may affect dirtiness of filter. Inspect and clean throughly |
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After inspection, reset filter and set securely. |
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If clogging badly, replace it with a new filter. |
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(5)
Electromagnetic
switch/contact |
Check weld damage or wear on switches and contacts. If either are found, replace with new parts. |
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Cool down unit. Inspect after turning power breaker off and unplug the unit. |
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(6)
Air Kit |
Pull adjusting knob of regulator up to unlock and turn knob to the left. If there is moisture, drain the waste from bowl. Drain by pressing drain valve below bowl. |
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Drain moisture into an empty can. |
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(7)
Terminals |
Monthly |
Check looseness of wiring contacts in control panel and unit. If loose tighten connections. |
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Inspect after turning power breaker off and unplug the unit. |
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(8)
Bolts,Nuts |
Every
6 Months |
Check looseness of bolts and nuts in each area. Tighten if loose. |
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(9)
Rotor Drive Belt |
Check if belt is cracked, scratched or loose. See if rotor is rotating normally. |
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If abnormal, replace belt. Contact local service. |
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(10)
After-Cooler
(on water-cooled types only) |
Remove the lid, inner section, cooling coil (inner) to remove gas compounds stuck on inside/outside of cooling coil. |
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Unit should be cooled, and have blowers idle (stopped) before checking. |
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