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102-A00     page 15/16

 

TROUBLESHOOTING 

NOTICE: 

Maintenance shall be performed by qualified technicians only,  

following the appropriate procedures and warnings as presented in this manual. 

 

 

SYMPTOM 

PROBABLE CAUSE 

Damaged Vanes 

1.  Foreign objects entering the pump. 
2.  Running the pump dry for extended periods of time. 
3.  Cavitation. 
4.  Viscosity too high for the vanes and /or the pump speed. 
5.  Incompatibility with the liquids pumped. 
6.  Excessive heat. 
7.  Worn or bent push rods, or worn push rod holes. 
8.  Settled or solidified material in the pump at start-up. 
9.  Hydraulic hammer - pressure spikes. 
10.   Vanes installed incorrectly (see"Vane Replacement"). 

Broken Shaft 

1.  Foreign objects entering the pump. 
2.  Viscosity too high for the pump speed. 
3.  Relief valve not opening. 
4.  Hydraulic hammer - pressure spikes. 
5.  Pump/driver, driveline/drive shaft misalignment. 
6.  Excessively worn vanes or vane slots. 
7.  Settled or solidified material in the pump at start-up. 
8.  Overtightened V-belts, if used. 

SEAL LEAKAGE 

1.  O-rings not compatible with the liquids pumped. 
2.  O-rings nicked, cut or twisted. 
3.  Shaft at seal area damaged, worn or dirty. 
4.  Ball bearings overgreased. 
5.  Pump sleeve bearings worn excessively. 
6.  Excessive cavitation. 

9. 

Mechanical seal faces cracked, scratched, pitted or dirty.

 

MOTOR OVERLOAD 

1. 

Horsepower of motor not sufficient for application 

2. 

Improper wire size / wiring and/or voltage to motor. 

3. 

Misalignment in pump drive system. 

4. 

Excessive viscosity, pressure or speed. 

5. 

Bearing locknuts adjusted improperly. 

6. 

Faulty or worn bearings. 

7. 

Rotor rubbing against head or cylinder. 

8. 

Dirty mechanical seal faces. 

 
 

Summary of Contents for HXL10E

Page 1: ...y 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 loo...

Page 2: ...use a lifting device capable of supporting the full weight of the pump assemblies Heavy assemblies can cause personal injury or porperty damage PUMP DATA PUMP IDENTIFICATION A pump Identification tag...

Page 3: ...intake pipe For viscosities greater than1000 SSU consult the strainer manufacturer instructions 5 Strainers must be cleaned regularly to avoid pump starvation 6 Intake and discharge piping MUST be fre...

Page 4: ...is manual for parts removal and replacement instructions Figure 4 Reversing the Relief Valve CHECK VALVES If a check valve is used install it at the pump discharge The use of check valves or foot valv...

Page 5: ...culties during start up are experienced 1 Start the motor Priming should occur within one minute 2 Check the inlet and discharge pressure gauges to ensure the system is operating within expected param...

Page 6: ...alve HXL pump models are offered with an optional relief valve assembly bolted onto the pump casing Pumping volatile liquids under suction lift may cause cavitation Partial closing of the discharge va...

Page 7: ...68 Nm HXLJ8 178 lbs ft 241 Nm 50 lbs ft 68 Nm HXL10 178 lbs ft 241 Nm 100 lbs ft 136 Nm 50 lbs ft 68 Nm SCHEDULED MAINTENANCE STRAINERS Strainers must be cleaned regularly to avoid pump starvation Sch...

Page 8: ...he head assembly from the outboard nondriven side of the pump according to steps 4 8 in the Pump Disassembly section of this manual 4 Turn the shaft by hand until a vane comes to the top 12 o clock po...

Page 9: ...5 Remove the head O ring 72 and disc 71 If needed threaded holes are provided in the disc to break it free 6 Remove the top vane then rotate the shaft by hand to bring the next vane to the top until...

Page 10: ...se Refer to the Lubrication section for the recommended grease Install the bearing into the recess of the head g Inspect the grease seal 104 for wear or damage and replace as required Grease the outsi...

Page 11: ...ary O ring of the mechanical seal 153B 153D will come off with the hub a Pull the bearing 24 from the housing in the hub b To remove the mechanical seal stationary seat 153B remove the seal retaining...

Page 12: ...mp Install the six 6 disc retaining screws 71A and lockwashers 71B 7 Install a new head O ring 72 8 Using a hoist carefully attach the head 20 to the casing with the head drain hole towards the bottom...

Page 13: ...ckwasher tang into the slot in the locknut The pump should continue to turn freely when rotated by hand 16 Inspect the grease seal 104 for wear or damage and replace as required Grease the outside dia...

Page 14: ...vanes discs liner or rotor 6 Excessive restriction in discharge line causing partial flow through the relief valve 7 Relief Valve worn set too low or not seating properly 8 Vanes installed incorrectly...

Page 15: ...y too high for the pump speed 3 Relief valve not opening 4 Hydraulic hammer pressure spikes 5 Pump driver driveline drive shaft misalignment 6 Excessively worn vanes or vane slots 7 Settled or solidif...

Page 16: ...102 A00 page 16 16 1809 Century Avenue Grand Rapids Michigan 49503 1530 U S A Telephone 616 241 1611 Fax 616 241 3752 E mail blackmer blackmer com Internet Address www blackmer com...

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