108-A00: Page 3/12
INSTALLATION
NOTICE:
Blackmer seal-less pumps must only be installed in
systems designed by qualified engineering personnel.
System design must conform with all applicable
regulations and codes and provide warning of all system
hazards.
Install, ground and wire to local and
National Electrical Code requirements.
Install an all-leg disconnect switch near
the unit motor.
Disconnect and lockout electrical power
before installation or service
Electrical supply MUST match motor
nameplate specifications.
Hazardous voltage.
Can shock, burn or
cause death.
Motors equipped with thermal protection automatically
disconnect motor electrical circuit when overload exists.
Motor can start unexpectedly and without warning.
PRE-INSTALLATION CLEANING
NOTICE:
New pumps contain residual test fluid and rust inhibitor. If
necessary, flush pump prior to use.
Foreign matter entering the pump WILL cause extensive
damage. The suction tank and piping MUST be cleaned and
flushed prior to pump installation and operation.
LOCATION AND PIPING
An improperly designed piping system or improper unit
installation WILL significantly reduce pump performance and
life. Blackmer recommends the following piping system layout
and unit installation.
1. To minimize intake losses, locate the pump as close as
possible to the source of supply.
2. Intake piping and fittings MUST be at least as large in
diameter as the pump intake connection.
3. Minimize the number of intake line fittings (valves, elbows,
etc.) and piping turns or bends.
4. It is recommended an intake strainer be installed at least
24" (0.6m) from the pump intake. For viscosities less than
1000 SSU the strainer should have a net open area of at
least four times the area of the intake pipe. For viscosities
greater than 1000 SSU consult the strainer manufacturer
instructions. Strainers must be cleaned regularly to avoid
pump starvation.
5. Intake and discharge piping MUST be free of all leaks.
6. Expansion joints, placed at least 36" (0.9m) from the
pump, will compensate for expansion and contraction of
the pipes. Contact the flexible connector/hose
manufacturer for required maintenance/care and design
assistance in their use.
7. Install vacuum and pressure gauges in the 1/4" NPT ports
provided in the pump cylinder to check pump at start up.
8. ALL piping and fittings MUST be properly supported to
prevent any piping loads from being placed on the pump.
9. Check alignment of pipes to pump to avoid strains which
might later cause misalignment. See Figure 1. Unbolt
flanges or break union joints. Pipes should not spring
away or drop down. After pump has been in operation for
a week or two, completely recheck alignment.
Figure 1
10. When pumping liquids at elevated temperature, provisions
should be made to compensate for expansion and
contraction of the pipes, especially when long pipe lines
are necessary. Steel pipe expands approximately 3/4”
(1.9 cm) per 100 feet (30.49 m) per 100°F (37.8°C) rise in
temperature.
CHECK VALVES
The use of check valves or foot valves in the supply tank is not
recommended with self-priming, positive displacement pumps.
If the possibility of liquid backflow exists when the pump is off,
a check valve in the pump discharge piping is recommended
because the pump can motor in the reverse rotation and create
undue stress on all attached components. Never start a pump
when it is rotating in the reverse rotation as the added starting
torque can damage the pump and related equipment.
PUMP MOUNTING
Permanently mount the unit by securing the base plate with
adequately sized anchor bolts to a level concrete floor
following recommended industry standards. A solid foundation
will reduce system noise and vibration, and will improve pump
performance. Refer to ANSI/HI standards or a suitable pump
handbook for information on typical pump mounting and
foundations.
BOLT
BASE
STANDARD
PIPE
WASHER
Figure 2