Bühler technologies EGK 2A Ex, Инструкция по установке и эксплуатации, Страница: 22 / 61

EGK 2A Ex
7.1 Maintenance Schedule
Component Interval* Work to be performed To be performed by
Pressure switch every 8,000 h or 1 year Test per chapter Testing the pressure monitoring cir-
cuit [> page 20]
Customer
Starting capacitor every 8,000 h or 1 year check for damages Customer
Condenser (air heat
exchanger) every 8,000 h or 1 year If ribs/cover is covered with dust or deposits, clean with
compressed air per chapter
Cleaning the condenser (air
heat exchanger) [> page 21]
Customer
Motor CP X1 after ~30,000 h Replace motor Service technician/
Bühler Technologies
during operation to changes in how the motor sounds during operation Customer
Bearing CP X1 after ~30,000 h Change bearing Service technician/
Bühler Technologies
when replacing the hose visually inspect for contamination. Customer
during operation to changes in operating noise Customer
Pump head CP X1 every 24,000 h or 3 years Visually inspect for tears/cracks Customer
every 8,000 h or 1 year Visually inspect for contamination from abrasion Customer
Rotor CP X1 every 16,000 h or 2 years Visually inspect for tears/cracks Customer
Pressure rollers CP X1 every 12,000 h or 1.5 years Visually inspect for abrasion Customer
Pressure spring CP X1 every 12,000 h or 1.5 years Visually inspect for wear/loss in clamping action Customer
Pump hose CP X1 every 4,000 h or 6 months Visually inspect for ab leaks Customer
every 8,000 h or 1 year Replace hose Customer
Pump cover CP X1 every 16,000 h or 2 years Visually inspect for cracks in the cover Customer
Knurled nuts CP X1 when replacing the hose retighten all knurled nuts hand tight Customer
*When operating hours/years is specified, whichever comes first applies.
7.2 Maintenance
DANGER Danger to life and explosion during installation and maintenance
The unit must not be worked on (assembly, installation, maintenance) in explosive at-
mospheres.
The following checks and, if necessary, cleaning must be performed at least once a year. No additional maintenance is required.
A maintenance record should be kept. A master operations diary can be found at the end of the operating instructions for copy-
ing.
DANGER Spark formation due to electrostatic charge
Always clean plastic housing parts and decals with a damp cloth.
Connect metal housings with earth potential (PE) conductive!
7.2.1 Testing the pressure monitoring circuit
The cooler must be operating and within the operating range (indicator green).
– Press the "Test1" button. The cooler will switch off and the display will flash, indicating the current temperature and the mes-
sage “ Stop “.
– Press the "Start1" button. The cooler will switch back on and the steady display will indicate the current temperature.
– Press the "Test2" button. The cooler will switch off and the display will flash, indicating the current temperature and the mes-
sage “ Stop “.
– Press the "Start2" button. The cooler will switch back on and the steady display will indicate the current temperature.
20 Bühler Technologies GmbH BE450020 ◦ 01/2020