Gardner Denver 5CDL-R Series, Список запасных частей и руководство по эксплуатации и обслуживанию

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37- 1- 613 Page 21
Altitude
(Feet above
See Level)
Maximum
Discharge
Pressure*
Maximum
Inlet
Vacuum*
1000 19.3 PSIG 16.4 Inches Hg.
2000 18.6 PSIG 15.8 Inches Hg.
3000 17.9 PSIG 15.3 Inches Hg.
4000 17.3 PSIG 14.7 Inches Hg.
5000 16.7 PSIG 14.2 Inches Hg.
* Gauge readings are taken as close as possible to
blower openings and include inlet and discharge losses.
Above 5000 feet, consult the nearest Gardner Denver Compressor
Division Customer Service.
FIGURE 3- 5 – ALTITUDE – PRESSURE/VACUUM
ALTITUDE
– Maximum allowable discharge pressure and/or inlet vacuum with be decreased with
operation at altitudes. See Figure 3-5, page21.
SPEED
– Refer to Figure 3-1, page18, for maximum and Figure 3-6, page 22 for minimum speeds.
Never operate the blower below the minimum or above the maximum speed shown. There is a definite
relationship between blower speed, discharge pressure and/or inlet vacuum, and the resulting discharge
air temperature. Reduced speed at high pressure or vacuum can cause excessive heating which may
result in rapid blower failure. For engine-driven units provide an accurate speed indicator.
Examples of minimum allowable speed at given pressures or vacuums are listed in Figure 3-6, as speed
is reduced, pressure or vacuum must also be reduced.
EXAMPLE: Using a 5CDL5 blower, operating against 18 PSIG, minimum allowable speed is 2700 RPM.
NOTICE
Blower speed, line losses, elevation, and increased inlet temperatures will affect the maximum
operating limitations.
OPERATING TEMPERATURE
– Blower air discharge temperature will increase with higher operating
pressures or vacuums. Maximum allowable discharge is 355°F. Maximum allowable temperature rise is
255°F. If the discharge temperature continues to exceed 355°F., or temperature rise continues to exceed
255°F, stop the blower at once and correct the trouble.
Do not continue to run a blower that is overheating. Check the blower for damage before
restarting.
Lubricating oil temperature will increase with increasing discharge air temperature. Oil temperature in the
discharge end sump will exceed that in the inlet end sump. Oil sump temperatures at the discharge end
in the 200
– 250° F. range are not uncommon.
STOPPING BLOWER
– Where possible, reduce the system pressure to zero gauge before stopping the
blower. To prevent backflow of foreign material into the blower on shutdown, provide a check valve in the
discharge line.
On engine-driven units, idle the engine for a few minutes prior to shutdown
.