Separator Element Replacement; Troubleshooting - Sullair 900XH Operators Manual And Parts Lists

sure selector valve to "low" position. Close the
service valve and set the low pressure back
pressure regulator to maintain 210 psig (14.5
bar) discharge pressure. Open the service valve
to maintain 200 psig (13.8 bar) and check for
1800 RPM full load speed. If lower speed is
observed, raise the setting of the low pressure
control regulator until rated speed is achieved.

SEPARATOR ELEMENT REPLACEMENT

Refer to Figure 5-4. When the need for a separator
element replacement is indicated by the mainte-
nance indicator (usually mounted to the air receiv-
er/separator tank but can also be remote mounted),
use the following procedure for separator replace-
ment.
1. Remove the air receiver/separator tank lid by
removing the twelve (12) hex head capscrews.
To assist with the removal of the tank
lid, Sullair has provided a 1"-8 nut to
the top lid so it can be removed by a 1"-
8 eye bolt (which is available from
Sullair) or a similar type of lifting
device.
Figure 5-4 Separator Element
*Repair Kit P/N 250028-244
NOTE
2. Remove the 3/4"-10 jam nut and sealing hex nut
from the 3/4"-10 separator hold down rod.
3. Remove the round separator cover plate from the
top of the separator element.
4. Remove the old separator element and discard.
5. Scrape the old gasket material from the tank lid
mounting surface and the flanges mounting sur-
face on the tank. Be sure to keep all scrapings
from falling back inside of the tank.
6. Before installing the new separator element,
make sure to lubricate both sealing o-rings on
the element with a lubricating compound (i.e.
Silglyde). Then install the new separator ele-
ment, the cover plate, the new 3/4"-10 sealing
hex nut, and the 3/4"-10 jam hex nut. Torque the
sealing hex nut to 85 to 90 ft.-lbs. (115 to 122
Nm). DO NOT over-tighten, as damage to sepa-
rator element can result.
7. Next, install the tank flange gasket that is provid-
ed. Before installing, lubricate both sides of the
gasket (i.e. Silglyde). Reinstall the tank lid.
Install the capscrews finger tight, then gradually
tighten in a crisscross pattern in 4 to 5 steps.
Always tighten the
opposite sides of the cover. Torque lubricated
capscrews to 280ft.-lbs. (380 Nm).
8. Clean or replace fluid return line strainer.
9. Clean the fluid return line orifice installed in the
side of the compressor unit air end.

5.10 TROUBLESHOOTING

The following Troubleshooting Chart is based on
both the data obtained from actual tests conducted
at our factory and real applied situations. It contains
symptoms and usual causes for the described prob-
lems. However, DO NOT assume that these are the
only problems that may occur. All available data
concerning the trouble should be systematically
analyzed before undertaking any repairs or compo-
nent replacement procedures.
• Check for loose wiring.
• Check for damaged piping.
• Check for parts damaged by heat or an elec-
trical short circuit, usually apparent by dis-
coloration or a burnt odor.
Should your problem persist after making the rec-
ommended check, consult your nearest Sullair rep-
resentative or the Sullair Corporation.
Section 5
MAINTENANCE
capscrews alternately at
37