Nordson EP2, Руководство пользователя

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9 EP2 Pump System
© 2021 Nordson Corporation
1072608-04
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Figure 3 EP2 Pump Assembly with Frame Only (Shown with Shroud Removed)
1. Motor
2. Gear reducer
3. Coupling 4. Guard
5. Pump 6. Oil fill cap
7. Shroud
Pump Operation
See Figure 4. Coating material can be supplied by a pressure-feed, gravity feed, or
siphon system. The coating material enters the pump through the fluid inlet (3) and a one-
way inlet check valve (4) into the pump housing.
As the pump shaft turns, it rotates a wobble plate. The high spot on the wobble plate
pushes on the three spring-loaded, oil-filled pistons. The pistons force the diaphragms to
bow out, compressing coating material and forcing it through the outlet check valves and
out of the pump.
After the high spot of the wobble plate passes the pistons, the piston springs force the
pistons back and the piston refills with oil. The diaphragm flexes in, drawing coating
material into the pump housing through the inlet check valves.
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Figure 4 EP2 Three-Piston Pump Operation
1. Dual-diaphragm cartridge
2. Outlet check valve 3. Fluid inlet
4. Inlet check valve