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103-A00    page 5/12 

OPERATION 

 

 

Operation without guards in place can 

cause serious personal injury, major 

property damage, or death. 

 

Do not operate 

without guard 

in place 

 

 

 

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 

 

PRE-START UP CHECK LIST 

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

should 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.  If equipped with a gear reducer, check the oil level in the 

gear reducer.  Fill with the grade of oil indicated on the 

reducer tag. For more specific instructions on Blackmer 

gear reducers, refer to the appropriate Gear reducer 

Installation, Operation and Instruction Manual. 

NOTICE: 

Blackmer gear reducers are not lubricated at the factory.  

Oil must be added before initial pump start up. 

4.  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. 

5.  Install vacuum and pressure gauges on the pump in the 

1/4” NPT connections provided to check suction and 

discharge conditions after pump start-up. 

6.  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 pump. Priming should occur within one minute. 
2.  Check the vacuum and pressure gauges to see if the 

pump is operating within the expected conditions.  

Record the readings in the ‘Initial Start Up Information’ 

section of this manual for future reference. 

3.  Inspect piping, fittings, and associated system 

equipment for leaks, noise, vibration and overheating. 

4.  If possible, check the flow rate.  Record the readings in 

the ‘Initial Start Up Information’ section of this manual 

for future reference. 

5.  Check the pressure setting of the relief valve by briefly 

closing a valve in the discharge line and reading the 

pressure gauge. This pressure should be 10-20 psi 

(0.7-1.4 bar) higher than the maximum operating 

pressure, or the external bypass valve setting (if 

equipped).  

DO NOT operate the pump against a 

closed discharge valve for more than 15 seconds.

 If 

adjustments need to be made, refer to "Relief Valve 

Setting & Adjustment." 

 

Incorrect settings of the pressure relief 

valve can cause pump component 

failure, personal injury, and property 

damage. 

Hazardous pressure 

can cause personal 

injury or property 

damage 

 

 

RUNNING THE PUMP IN REVERSE 

ROTATION 

NOTICE: 

The 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. 

 

Summary of Contents for NP1.5B

Page 1: ...NP3 NP4 NPH4 103 A04 103 A05 103 A06 SAFETY DATA This is a SAFETY ALERT SYMBOL When you see this symbol on the product or in the manual look for one of the following signal words and be alert to the...

Page 2: ...ailure to stop the pump before adjusting the shaft packing can cause severe personal injury Hazardous machinery can cause severe personal injury PUMP DATA PUMP IDENTIFICATION A pump Identification tag...

Page 3: ...times the area of the intake piping For viscosities greater than 1 000 SSU 200 cP consult the strainer manufacturer instructions Strainers must be cleaned regularly to avoid pump starvation 4 The int...

Page 4: ...mp driver rotation TO CHANGE PUMP ROTATION To reverse rotation the pump must be disassembled then reassembled with the shaft on the opposite side of the pump See the Maintenance section for instructio...

Page 5: ...arge conditions after pump start up 6 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 C...

Page 6: ...discharge valve The pump relief valve must be set higher than the system pressure control valve but must not exceed the maximum differential pressure of the pump see table 1 RELIEF VALVE SETTING AND...

Page 7: ...NTENANCE STRAINERS Strainers must be cleaned regularly to avoid pump starvation Schedule will depend upon the application and conditions LUBRICATION NOTICE To avoid possible entanglement in moving par...

Page 8: ...ngs bushings a Using an appropriately sized arbor press remove the old bearing from the head b To aid installation and prevent bearing damage heat the head in an oven at 200oF 93oC before installing t...

Page 9: ...nd uniformly tighten the packing follower stud nuts 18 1 4 turn at a time to reduce leakage b Restart the pump and check the stuffing box temperature several minutes after each adjustment for signs of...

Page 10: ...st for the viscosity or volatility of the liquid c Pump too far from fluid source 2 Running the pump for extended periods with a closed discharge line 3 Misalignment of the pump 4 Baseplate not secure...

Page 11: ...Working Pressure 220 psi 15 17 Bar 195 psi 13 44 Bar LOCATION AND PIPING NOTICE A system pressure control device in addition to the pump relief valve is required OPERATION NOTICE The pump must be tes...

Page 12: ...ess Marine Magnetic Drive Pumps Stainless Steel 14 to 215 GPM Abaque Peristaltic Hose Pumps 0 1 to 210 GPM High Lift Solids Abrasives Reciprocating Gas Compressors Liquefied Gas Transfer B oosting Vap...

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