Edwards nES Series User Manual

7. Adjustments and servicing procedures
7.1 Drive motor
On nES100 - nES750 (nES40 - nES65 do not have motor bearings) the motor bearings
must be changed every 20,000 hours. Check recommendaons on the motor's website.
If installed, remove the motor condensate drain plug yearly. Keep the motor free from
dust for opmal cooling.
7.2 Exhaust lter replacement
nES40, nES65 and nES100
1.
Unscrew the 4 or 6 screws of the lter cover and remove the lter cover together
with the O-ring.
2.
Remove the exhaust lters from the lter cover.
3.
Clean the exhaust lter O-ring lodge and the lter cover O-ring before
reassembling the new parts.
4. Install the new exhaust lters following the instrucons delivered with them.
5. Reassemble the lter cover.
nES200
1. When the exhaust lter elements are clogged, the valves open and the lters are
bypassed. Oil mist at the exhaust, and high oil consumpon are signs that the
exhaust lters are clogged.
2.
The exhaust lters must be replaced more frequently if subject to increased oil
cracking products at high operang temperatures and aggressive media.
3. Remove the exhaust ange with gasket. Unscrew the lock nut and remove the
spring between both washers: take out the exhaust lter elements.
4.
Take out the pressure relief valves and check that they move freely and seal
properly.
5. Reassemble in the reverse sequence. Ensure that the exhaust lter elements are
properly centred and posioned. Install the spring between both washers and
ghten the stop nut fully home with the 10 mm box wrench.
nES300, nES300S
1.
Remove the screws of the exhaust plate using an 8 mm Allen key.
2.
Li the 3 exhaust lters from the W shaped metal sheet holder and remove them
from the oil casing.
3.
Make sure that the new exhaust lters have the O-ring (opposite side of
overpressure valve) and grease them using our vacuum grease.
4.
Replace the O-ring of the exhaust plate.
5.
Insert new exhaust lters. They are guided in the oil casing correct posion. Make
sure the compression springs are behind the W shaped metal sheet holder.
6.
Plug the exhaust plate on the W shaped metal sheet holder with the 2 locaon
pins and screw the exhaust plate on the oil casing using an 8 mm Allen key.
Page 38 - 07/2020
A35104880_B - Adjustments and servicing procedures

Edwards nES Series Specifications

General

Brand	Edwards
Model	nES Series
Category	Water Pump
Language	English