4 - 4
Maintenance and Repair
7.
LIGHTLY lubricate the new O-ring with a petroleum-
based lubricant that is compatible with your applica-
tion before installing the new element.
8.
Insert new element, snapping it into place with a firm
push up into the head. The element will hang from
the head until the bowl is installed.
9.
LIGHTLY lubricate the housing O-ring with a petro-
leum-based lubricant that is compatible with your ap-
plication.
CAUTION: Do not use a pipe wrench to tighten the
filter bowl to the head.
10. Reattach bowl to head and hand tighten. As the bowl
is threaded onto the head, supports in the bottom of
the bowl ensure a proper seal between the element
and the filter head.
11. Reattach drain lines (if applicable).
12. Close service valve.
13. Slowly open the inlet isolation valve to prevent a pres-
sure surge through the filter.
14. Once the filter has been pressurized, slowly open the
outlet isolation valve.
15. After both isolation valves have been opened, close
the system bypass valve. The filter is now in service.
16. Record the date of the element change in a record
book or on the provided "Element Change" label. A
new element change label with the updated informa-
tion should be applied over the previous label each
time the element is replaced.
Dryer Models OP300 through OP500
WARNING!
Ensure that the Dryer and any associated Prefilters
and Afterfilters are valve isolated and fully depressur-
ized before attempting to remove or disassemble any
components or subassemblies. Failure to do so may
result in serious personal injury and/or equipment
damage.
1.
Isolate the filter by opening the system bypass valve
(refer to Figure 2.1, page 2-2), and closing both inlet
and outlet isolation valves.
2.
Open the service valve to vent the filter to atmo-
spheric pressure.
3.
Disconnect drain lines at manual and automatic drain
valves (if installed).
4.
Remove the bolts securing the filter cover to the ves-
sel.
5.
Remove the filter cover.
6.
Unscrew and remove cartridge retaining seal nuts.
7.
Remove the used element cartridges. Discard the
cartridges in accordance with applicable regulations.
Used elements typically hold contaminants, such as
compressor lubricants and particulate matter.
8.
Insert new element cartridges in filter.
9.
Reinstall element seal nuts. Screw seal nuts on until
"hand-tight", then tighten an additional one-half (1/2)
turn.
10. Replace filter cover.
11. Reinstall bolts to secure filter cover.
12. Reattach drain lines (if applicable).
13. Close service valve.
14. Slowly open the inlet isolation valve to prevent a pres-
sure surge through the filter.
15. Once the filter has been pressurized, slowly open the
outlet isolation valve.
16. After both isolation valves have been opened, close
the system bypass valve. The filter is now in service.
17. Record the date of the element change in a record
book or on the provided "Element Change" label. A
new element change label with the updated informa-
tion should be applied over the previous label each
time the element is replaced.
4.4
Servicing The Internal Float
Drain Valve (If Equipped)
WARNING!
Ensure that the Dryer and any associated Prefilters
and Afterfilters are valve isolated and fully depressur-
ized before attempting to remove or disassemble any
components or subassemblies. Failure to do so may
result in serious personal injury and/or equipment
damage.
1.
Isolate the filter by opening the system bypass valve
(refer to Figure 2.1, page 2-2), and closing both inlet
and outlet isolation valves.
2.
Open the service valve to vent the filter to atmo-
spheric pressure.
3.
Disconnect drain lines and automatic drain valves (if
installed).
WARNING!
A "hissing" sound while the bowl is being removed
indicates the filter has not been properly depressur-
ized. DO NOT continue to remove the bowl until the
filter has been completely vented to atmospheric pres-
sure.
