7.6. Adjustments and servicing
7.6.1. Drive motor
On GVS 100 - 630A (GVS 16 - 60A do not have motor bearings) the motor
bearings must be changed every 20000 hours. Check recommendations on the
motor supplier’s website. If installed, remove the motor condensate drain plug
yearly. Keep the motor free from dust for optimal cooling.
7.6.2. Exhaust filter replacement
GVS 16A and GVS 25A
1. Unscrew the 4 screws of filter cover and remove the filter cover together with
the gasket.
2. Loosen 1 screw of friction spring and remove the friction spring.
3. Remove the exhaust filter.
4. Clean the contact surface of the filter cover O‑ring before reassembling the
new parts.
5. Insert the new exhaust filter with handle of filter towards the top of oil casing in
their lodge.
6. Install the friction spring.
7. T
urn screw on friction spring to contact with filter then turn another 4 cycles.
8. Re-assemble the filter cover.
GVS 40A, GVS 60A and GVS 100A
1. Unscrew the 4 or 6 screws of the filter cover and remove the filter cover
together with the O‑ring.
2. Remove the exhaust filter(s) from the filter cover.
3. Clean the exhaust filter O-ring lodge and the filter cover O‑ring before
reassembling the new parts.
4. Install the new exhaust filter(s) following the instructions delivered with them.
5. Re-assemble the filter cover.
GVS 200A
1. When the exhaust filter elements are clogged, the valves open and the filters
are bypassed. Oil mist at the exhaust, and/or high oil consumption are signs
that the exhaust filters are clogged.
2. The exhaust filters must be replaced more frequently if subject to increased oil
cracking products at high operating temperatures and/or aggressive media.
3. Remove the exhaust flange with gasket. Unscrew the lock nut and remove
spring between its both washers: take out the exhaust filter element(s).
4. Take out the pressure relief valves and check that they move freely, and seal
properly
.
5. Re-assemble in the reverse sequence. Make sure that the exhaust filter
elements are properly centered and positioned. Install spring between its both
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