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Dover Blackmer LGL3021A, Installation, Operation And Maintenance Instructions

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Dover Blackmer LGL3021A Installation, Operation And Maintenance Instructions Download Page 1

BLACKMER LIQUEFIED GAS PUMPS 

960439

 

INSTRUCTIONS NO. 501-L00 

FOR LP-GAS AND NH

3 

SERVICE, TRUCK AND BASE MOUNTED 

INSTALLATION OPERATION AND MAINTENANCE INSTRUCTIONS

 

MODEL: LGL3021A 

 

Section 

Effective 

Replaces 

501 
Jan 2012 
New 

 

Patent Protected by U.S. Patent 6030191 and Related Foreign Patents. 

 

 

TABLE OF CONTENTS 

Page

 

SAFETY DATA

 ..................................................................... 1

 

PUMP DATA

 

 Pump 

Identification ..................................................... 2 

 Technical 

Data ........................................................... 2 

 

Initial Pump Start Up Information ............................... 2 

GENERAL INSTALLATION AND OPERATION

  

 Welded 

Connections .................................................. 3 

 Pre-Installation Cleaning ............................................ 3 
 Location 

and 

Piping .................................................... 3 

 

Pump Relief Valve and Bypass Valve ........................ 4 

 Check 

Valves ............................................................. 4 

 Pump 

Rotation ........................................................... 4 

MOTOR DRIVEN PUMPS 

 

 Pump 

Mounting .......................................................... 4 

 Coupling 

Alignment .................................................... 5 

 V-Belt 

Drive ................................................................ 5 

 V-Belt 

Disassembly .................................................... 5 

 Pre-Start 

Up 

Check List ............................................. 6 

 

Start Up Procedures ................................................... 6 

TRUCK MOUNTED PUMPS

 

 Truck 

Mounting .......................................................... 6 

 Pump 

Drive ................................................................ 6 

 Hydraulic 

Drive ........................................................... 7 

 Pre-Start 

Up 

Check List ............................................. 7 

 

Start Up Procedures ................................................... 7 

 Pump 

Speed .............................................................. 8 

MAINTENANCE 

 Strainers ..................................................................... 8 
 Lubrication 

.................................................................. 8 

 Vane 

Replacement ..................................................... 9 

 Pump 

Disassembly .................................................... 9 

 Pump 

Assembly ....................................................... 10 

TROUBLE SHOOTING

 ...................................................... 11 

 
NOTE

: Numbers in parentheses following individual parts 

indicate reference numbers on Blackmer Parts List 501-L01 
 
Blackmer pump manuals and parts lists may be obtained from 
Blackmer's website (www.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 serious personal injury, 

death or major property damage. 

 

Warns of hazards that CAN cause personal injury 

or property damage. 

NOTICE: 

Indicates special instructions which are very 

important and must be followed. 

 

 

 

NOTICE: 

Blackmer liquefied gas pumps MUST only be installed 
in systems which have been designed by qualified 
engineering personnel. The system MUST conform to 
all applicable local and national regulations and safety 
standards. 

This manual is intended to assist in the installation 
and operation of the Blackmer liquefied gas pumps, 
and MUST be kept with the pump. 

Blackmer liquefied gas pump service shall be 
performed by qualified technicians ONLY. Service 
shall conform to all applicable local and national 
regulations and safety standards. 

Thoroughly review this manual, all Instructions and 
hazard warnings, BEFORE performing any work on 
the Blackmer liquefied gas pumps. 

Maintain ALL system and Blackmer liquefied gas 
pump operation and hazard warning decals. 

 

 

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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