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INSTALLATION
NOTICE:
Blackmer power 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.
WELDED CONNECTIONS
NOTICE:
Pumps with welded connections contain three non-
metallic gaskets that may be damaged if welding is done
with these gaskets installed.
Prior to welding the piping, remove the gaskets from under
the inlet flange, outlet flange and relief valve cover.
Reinstall the inlet and outlet flanges. Weld the piping to the
the inlet and outlet flanges. After the welding is complete,
reinstall the gaskets, cover and flanges.
PRE-INSTALLATION CLEANING
NOTICE:
New pumps might contain residual test fluid and/or rust
inhibitor. If necessary, flush pump prior to use.
Foreign matter entering the pump WILL cause extensive
damage. The supply tank and intake 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. It should slope
downward to the pump, and should not contain any
upward loops.
3. Minimize the number of intake line fittings (valves,
elbows, etc.) and piping turns or bends. When used,
intake fittings must be located at least 5 - 10 pipe
diameters from the pump intake.
4. Install an intake strainer 5 - 10 pipe diameters from the
pump intake. The strainer should have a net open area
of at least four times the area of the intake pipe.
5. Strainers must be cleaned regularly to avoid pump
starvation.
6. Intake and discharge piping MUST be free of all leaks.
7. 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.
8. Install pressure gauges in the NPT ports provided in the
pump casing to check pump at start up.
9. ALL piping and fittings MUST be properly supported to
prevent any piping loads from being placed on the pump.
10. 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
11. The use of a 4” (100mm) vapor return line will speed
delivery by preventing pressure build up at the receiving
tank and pressure reduction in the supply tank.
12. Keeping the liquefied gas systems full of liquid, even
when idle, will keep the O-rings from changing shape,
shrinking or super cooling. Evaporation of liquefied gas
leaves an abrasive powder on the surface which can
cause wear to the pump, meter, and seals.
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. Check coupling alignment after
pump and base assembly is secured to the foundation.
Figure 2 - Pipe Type Anchor Bolt Box
When installing units built on channel or structural steel type
bases, use care to avoid twisting the base out of shape when
anchor bolts are tightened. Shims should be used under the
edges of the base prior to tightening of the anchor bolts to
prevent distortion. See figure 2 for proper orientation
