Dover Blackmer LGL3021A Installation, Operation And Maintenance Instructions Download Page 2

 

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SAFETY DATA 

 

Failure to set the vehicle emergency 
brake and chock wheels before 
performing service can cause severe 
personal injury or property damage 

 

Failure to disconnect and lockout 
electrical power before attempting 
maintenance can cause shock, burns or 
death 

 

Hazardous 

machinery can 

cause serious 

personal injury.

 

 

Hazardous voltage. 

Can shock, burn or 

cause death.

 

 

 

 

 

 

 

Failure to disconnect and lockout 
electrical power or engine drive before 
attempting maintenance can cause 
severe personal injury or death 

 

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

 

Hazardous 

machinery can 

cause serious 

personal injury.

 

 

Do not operate 

without guard  

in place

 

 

 

 

 

 

 

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

 

 

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

  

Systems with meters will still 

be pressurized even after the hose is 
emptied

 

 

 

Hazardous pressure 

can cause serious 

personal injury or 

property damage 

 

Hazardous pressure 

can cause serious 

personal injury or 

property damage

 

 

 

 

 

 

 

If pumping hazardous or toxic fluids, 
system must be flushed and 
decontaminated, inside and out, prior to 
performing service or maintenance 

 

 

 

 

 

 

Hazardous or toxic 

fluids can cause 

serious injury. 

 

 

 

 

 

 

 

PUMP DATA 

PUMP IDENTIFICATION 

A pump Identification tag, containing the pump serial number, I.D. number, and model designation, is attached to each pump.  It is 
recommended that the data from this tag be recorded and filed for future reference. If replacement parts are needed, or if 
information pertaining to the pump is required, this data must be furnished to a Blackmer representative. 

 

TECHNICAL DATA 

Models LGL3021A 

Torque required  
@100 psi (6.9 bar) 

89 lbs  ft 

(121 Nm) 

Maximum Pump Speed @ 
Max. Differential Press. 

800 RPM 

Maximum Differential 
Pressure 

150 PSI 

(10.3 Bar) 

Maximum Operating 
Temperature 

240°F 

(115°C) 

Maximum Working 
Pressure 

350 PSI 

(24.1 Bar) 

 

Technical Data is for standard materials of construction.  
Consult Blackmer Material Specs for optional materials 
of construction. 

 

These pumps are listed by Underwriters’ Laboratories 
for liquefied petroleum gas and NH

3

 service. 

INITIAL PUMP START UP INFORMATION 

Model No.: ____________________________________ 

Serial No.:  ____________________________________ 

ID No.:  _______________________________________ 

Date of Installation: _____________________________ 

Inlet Gauge Reading: ____________________________ 

Discharge Gauge Reading: _______________________ 

Flow Rate: _____________________________________ 

 

Summary of Contents for Blackmer LGL3021A

Page 1: ...w blackmer com or by contacting Blackmer Customer Service 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 potential for personal injury death or major property damage Warns of hazards that WILL cause serious personal injury death or major property damage Warns of hazards that CAN cause...

Page 2: ...ous or toxic fluids system must be flushed and decontaminated inside and out prior to performing service or maintenance Hazardous or toxic fluids can cause serious injury PUMP DATA PUMP IDENTIFICATION A pump Identification tag containing the pump serial number I D number and model designation is attached to each pump It is recommended that the data from this tag be recorded and filed for future re...

Page 3: ...e intake port on the pump Slope the pipe downward to the pump and do not install any upward loops Minimize the number of intake line fittings and eliminate restrictions such as sharp bends globe valves unnecessary elbows and undersized strainers 3 A strainer must be installed in the inlet line to protect the pump from foreign matter Locate the strainer at least 24 0 6m from the pump Strainers must...

Page 4: ...irm correct pump rotation by checking the pump rotation arrows respective to pump driver rotation Blackmer LGL3021 pump model has a double ended rotor and shaft enabling them to be driven from either shaft end To change rotation rotate the pump 180 degrees so that the opposite shaft becomes the driven shaft The shaft protector 186 MUST be mounted over the non driven shaft Operation without guards ...

Page 5: ...e sheave capscrews 152C G 5 Measure the span length as shown in Figure 6 6 Adjust the motor base 183 and apply a specified force see Table 1 against the belt at the center of the span so that the belt is deflected 1 64 inch 0 04 mm for every inch 25 4 mm of span For example the deflection of a 20 inch 508 mm span would be 20 64 or 5 16 inch 7 9 mm Refer to Table 1 for the deflection force of a pro...

Page 6: ... closed valve can cause system failure personal injury and property damage Hazardous pressure can cause personal injury or property damage TRUCK MOUNTED PUMPS Failure to set the vehicle emergency brake and chock wheels before performing service can cause severe personal injury or property damage Hazardous pressure can cause personal injury or property damage NOTICE Consult the General Installation...

Page 7: ... is a Lever Operated Pull the control knob all the way out Manually check the lever under the truck to see that it is in the completely OPEN position b Discharge Pressure Operated Keep the discharge line valve closed When pump is started it will build up enough pressure to open the tank outlet valve NOTE This type of valve usually requires approximately 20 PSI 1 4 bar differential pressure to open...

Page 8: ...ushed and decontaminated inside and out prior to performing service or maintenance Hazardous pressure can cause personal injury or property damage Hazardous or toxic fluids can cause serious injury NOTICE Maintenance shall be performed by qualified technicians only following the appropriate procedures and warnings as presented in this manual STRAINERS Strainers must be cleaned regularly to avoid p...

Page 9: ...A and 24B a Bend up the engaged lockwasher tang and rotate the locknut 24A counterclockwise to remove it from the shaft b Slide the lockwasher 24B off the shaft Inspect the lockwasher for damage and replace as required c Repeat steps a and b on the opposite shaft end 6 Remove the head capscrews 21 and carefully pry the head 20 away from the casing 12 7 Slide the head 20 off the shaft The head O ri...

Page 10: ... See Figure 8 c After the bottom vanes and push rods are installed insert the rotor and shaft 13 fully into the casing 12 d Install the remaining vanes 14 into the top positions of the rotor 6 Install the disc 71 on the inboard side of the pump with the seal cavity facing outward and the disc relief hole located as shown in Figure 9 7 Install a new head O ring 72 in the groove on the inside face o...

Page 11: ...he tang with the locknut slot Secure the nut by bending the aligned lockwasher tang into the slot in the locknut The pump should continue to turn freely when rotated by hand g To check adjustment grasp the nut and washer with fingers and rotate back and forth If this cannot be done one or both locknuts are too tight and should be alternately loosened one stop at a time 001 25 microns Begin by loos...

Page 12: ...o low 12 Liner installed backwards 13 Damaged vanes see following category Damaged Vanes 1 Foreign objects entering the pump 2 Running the pump dry for extended periods of time 3 Cavitation 4 Excessive heat 5 Worn or bent push rods or worn push rod holes 6 Hydraulic hammer pressure spikes 7 Vanes installed incorrectly see Vane Replacement 8 Incompatibility with the liquids pumped Broken Shaft 1 Fo...

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