BLACKMER 111-F01, Installation, Operation And Maintenance Instructions

111-F00     Page 5/16 

OPERATION 

Do not operate 

without guard 

in place 

Operation without guards in place can 
cause serious personal injury, major 
property damage, or death. 

Hazardous pressure 

can cause personal 

injury or property 

damage

Disconnecting fluid or pressure 
containment components during pump 
operation can cause serious personal 
injury, death or major property damage 

Hazardous pressure 

can cause personal 

injury or property 

damage 

Failure to relieve system pressure prior 
to performing pump service or 
maintenance can cause personal injury 
or property damage. 

Hazardous pressure 

can cause personal 

injury or property 

damage 

Pumps operating against a closed valve 
can cause system failure, personal 
injury and property damage  

Hazardous pressure 

can cause personal 

injury or property 

damage

An external bypass valve and/or internal 
relief valve must be installed in the 
system to protect the pump from 
excessive pressure.

Hazardous pressure 

can cause personal 

injury or property 

damage 

Incorrect bypass valve or internal relief 
valve settings can cause pump 
component failure, personal injury, and 
property damage. 

PRE-START UP CHECK LIST 

1.  Check the alignment of the pipes to the pump. Pipes 

must be supported so that they do not spring away or 
drop down when pump flanges or union joints are 
disconnected. 

2.  Verify proper coupling alignment. 

3.  Check the entire pumping system to verify that the proper 

inlet and discharge valves are fully open, and that the 
drain valves and other auxiliary valves are closed. 

4.  Install inlet and discharge pressure gauges on the pump 

in the threaded connections provided. These can be 
used to check actual suction and discharge conditions 
after pump start-up. 

5.  Check the wiring of the motor, and briefly turn on the 

power to make sure that the pump rotates in the direction 
of the rotation arrow. 

START UP PROCEDURES 

NOTICE: 

Consult the "General Pump Troubleshooting" section of 
this manual if difficulties during start up are experienced. 

1.  Start the motor. Priming should occur within one minute. 

2.  Check the suction and discharge pressure gauges to see 

if the pump is operating within the expected conditions. 

3.  Check for leakage from the piping and equipment. 

4.  Check for overheating of the pump, reducer (if equipped), 

and motor. 

5.  If possible, check the flow rate. 

6.  Check the pressure setting of the system bypass valve 

by slowly restricting a valve in the discharge line and 
reading the pressure gauge. This pressure should be 20 
psi (1.4 bar) higher than the intended operating pressure.  

RUNNING THE PUMP IN REVERSE 

NOTICE: 

When pumps are operated in reverse a separate pressure 
relief valve must be installed to protect the pump from 
excessive pressure. 

NOTICE: 

Pump should be operated in reverse rotation for no more 
than 10 minutes and only when a separate pressure relief 
valve is installed to protect the pump from excessive 
pressure. 

 
It may be desirable to run the pump in reverse rotation for 
system maintenance.  The pump will operate satisfactorily in 
reverse rotation for a LIMITED time, 

at a reduced 

performance level.