INSTALLATION
CB5A-021 page 9/24
PRESSURE SWITCHES
Pressure switches may be installed in the suction or
discharge gas stream as protective devices, for
compressor control, or for other uses varying with each
application and system design.
PRESSURE GAUGES
Install pressure gauges in the discharge and inlet lines to
verify actual suction and discharge pressures.
Optional liquid trap level switches,
temperature switches, pressure
switches or other electrical devices
must be properly specified for
applications using explosive gases.
Hazardous gases
can cause property
damage, personal
injury or death
OPERATION
PRE-STARTUP CHECK LIST
Failure to disconnect and lockout
electrical power or engine drive before
attempting maintenance can cause
severe personal injury or death
Hazardous
machinery can
cause serious
personal injury.
1. After the compressor is installed in the system, a
complete leak test MUST be performed on both the
compressor and the piping.
Failure to properly leak test the
compressor installation may result in
leakage of explosive gas to the
atmosphere creating an explosion
hazard, possibly causing severe
personal injury or death.
Hazardous gases
can cause property
damage, personal
injury or death
2. Re-check the system piping and the piping supports
to ensure that no piping loads are being placed on
the compressor.
Discharge piping surface temperatures
may be hot during operation (over
158°F, 70°C). Temperatures should be
monitored and adequate warnings
posted.
Extreme Heat can
cause personal injury
or property damage
3. If V-belt driven, check the alignment of the motor and
the compressor sheaves. The faces of the sheaves
must be parallel.
4. Ensure that pressure gauges are installed on both
inlet and discharge of the compressor.
5. Blackmer compressors are shipped from the factory
without oil in the crankcase. Fill with a high quality
non-detergent oil of the proper viscosity via the
compressor nameplate opening. See "Crankcase
Lubrication" in this manual.
6. Check the electrical connections for proper wiring,
grounding, etc.
7. With the power disconnected, remove the
compressor nameplate. Squirt oil onto each
crosshead while rotating the compressor by hand to
verify smooth operation.
8. Ensure that all guarding is properly installed.
Operation without guards in place can
cause serious personal injury, major
property damage or death.
Hazardous
machinery can
cause serious
personal injury.
Flywheel guard contact with moving
parts may be a source
of ignition in explosive atmospheres
causing severe personal injury or death
Hazardous gases
can cause property
damage, personal
injury or death
