BLACKMER HD942A, Инструкции по установке, эксплуатации и обслуживанию

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INSTALLATION
CB9A-030 page 6/28
COMPRESSOR DRIVE SYSTEMS
Hazardous
machinery can
cause serious
personal injury.
Failure to disconnect and lockout
electrical power or engine drive before
attempting maintenance can cause
severe personal injury or death
Hazardous gases
can cause property
damage, personal
injury or death
Flywheel guard contact with moving
parts may be a source of ignition in
explosive atmospheres causing severe
personal injury or death
Hazardous
machinery can
cause serious
personal injury.
Operation without guards in place can
cause serious personal injury, major
property damage or death.
FLYWHEEL
Blackmer compressors are fitted with flywheels which
MUST be used regardless of the type of drive system
employed.
Flywheels must be properly installed and aligned:
1. Ensure that the mating surface between the hub
and flywheel are clean and dry – do not use a
lubricant.
2. Install the hub and key on clean compressor shaft,
flange end first.
3. Tighten the hub setscrew just enough to prevent it
from sliding on the shaft – do not overtighten.
4. Place the flywheel on the hub and loosely thread
the capscrews with lockwashers into the assembly.
Do not use lubricant on the capscrews.
5. Tighten all capscrews evenly and progressively in
rotation to the torque value in Table 4. There must
be a gap between the hub flange and the flywheel
with installation is complete.
Do not over-torque.
Do not attempt to close gap between hub flange
and flywheel.
Hub
Size Capscrew
Size
Torque
ft-lbs. (Nm)
SF 3/8 – 16 30 (40.7)
E 1/2 - 13 60 (81)
F 9/16 – 12 110 (149)
Table 4 – Flywheel Hub Torque Values
6. Ensure that the radial and axial runout values at the
rim do not exceed the following values:
Radial O.D. Runout: 0.016 in. (0.4046 mm)
Axial Rim Runout: 0.021 in. (0.5334 mm)
7. Ensure that the compressor flywheel guard is
properly installed before operation. The guard must
not contact moving parts.
V-BELT DRIVES
Most Blackmer compressors are driven via V-belts
which must be properly aligned and tensioned.
1. Lay a straight edge along the face of the motor
sheave and compressor flywheel.
2. Adjust either as needed to provide alignment.
3. Tighten the V-belts such that they are taut, but not
overly tight. Moderate thumb pressure should
deflect each belt about 1/4 – 3/8 in. (6 – 10 mm).
Consult your V-belt supplier for specific values.
4. Check the belt tension after 24 - 48 hours run-in.
Recheck the tension periodically, and tighten the
belts as required.
Caution should be used to avoid overtightening belts,
which can shorten bearing and belt life. Belts should
be inspected periodically for signs of excessive wear
and replaced if necessary.