manualshive.com logo in svg

Dover PSG BLACKMER MLN4B, Инструкции по установке, эксплуатации и обслуживанию, Страница: 15 / 20

Поделиться
Скачать
Dover PSG BLACKMER MLN4B Скачать руководство пользователя страница 15

106-A00    Page 15/20 

MAINTENANCE: MLN4B, MRLN4B

 

 

7.  Follow Steps 2 through 5 to install the remaining head 

and hub assemblies. Remember to grease the casing 
chamfer and the three head chamfers. 

8.  PACKING AND PACKING FOLLOWER 

When necessary to repack, use a full set of new 
packing rings (19). Packing is furnished in sets with the 
correct number of rings. Never add new rings to an old 
set of packing. 
a.  Insert the packing washer (58) into the stuffing box 

of the inboard hub (20C). 

b.  Insert each packing ring (19) separately into the 

stuffing box, using the packing follower (75) to 
properly seat each ring after placement. Be sure to 
stagger the split joints approximately 180 degrees 
apart so that they are not overlapping or near the 
joint of the preceding ring. 

c.  After the packing rings are in place, install and 

tighten the two packing follower removal nuts (18A) 
against the hub (20C).  

d.  Place the packing follower (75) snugly against the 

packing (19). Install the two packing follower stud 
nuts (18) and tighten lightly. 

 

 

Failure to stop the pump before 
adjusting the shaft packing can cause 
severe personal injury. 

Hazardous 

machinery can 

cause serious 

personal injury. 

9. 

PACKING ADJUSTMENT – 

Packing must be properly 

adjusted to prevent overheating. 
a.  While the liquid is being pumped, check for leakage 

from the stuffing box.  STOP the pump and 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 overheating. 

c.  Check the packing (19) again after 20-30 minutes of 

running the pump, and readjust if necessary. 

NOTE: 

Some leakage is desirable to lubricate the 

packing, but in some cases is unacceptable, depending 
on the application. 

10. BLACKMER TRIPLE-LIP SEAL (if equipped) 

On pumps equipped with a Blackmer triple-lip seal, refer 
to the separate literature accompanying the triple-lip 
seal for installation instructions. 

11. COMMERCIAL MECHANICAL SEAL (if equipped 

On pumps equipped with a commercial mechanical 
seal, refer to the separate literature accompanying the 
mechanical seal for installation instructions. 

12. RELIEF VALVE ASSEMBLY (if equipped) 

a.  Insert the valve (9) into the relief valve body (6) with the 

fluted end inward. 

b.  Install the relief valve spring (8), spring guide (7) and 

guide rod (45) against the valve. 

c.  Attach a new relief valve gasket (10) and the valve 

cover (4) on the cylinder. 

d.  Screw the relief valve adjusting screw (2) into the valve 

cover until it makes contact with the spring guide (7). 

e.  Install the relief valve cap (1) and gasket (88) after the 

relief valve has been precisely adjusted. 

NOTICE: 

The relief valve setting MUST be tested and adjusted 
more precisely before putting the pump into service.  
Refer to "Relief Valve Setting and Adjustment" 

13. 

Reinstall coupling, shaft key (35), and coupling guards.

 

14. SHAFT COVER 

a.  Install the shaft cover O-ring (26) in the groove in the 

shaft cover. 

b.  Lubricate the chamfer on the outboard hub, and slide 

the shaft cover (27) over the shaft against the hub. 

c.  Install and tighten the two shaft cover capscrews (28). 

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

Do not operate 

without guard in 

place. 

15. 

Refer to “Pre-Start Up Check List” and “Start Up 
Procedures” sections of this manual prior to pump 
operation.

 

Содержание PSG BLACKMER MLN4B

Страница 1: ...mer 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 seriou...

Страница 2: ...DENTIFICATION A pump identification tag containing the pump serial number I D number and model designation is attached to each pump Record and file the data from this tag 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 MLX4B Full size liner External Ball Bearings MLXW4B MLX4B w Wear r...

Страница 3: ...ea of at least four times the area of the intake piping Strainers must be cleaned regularly to avoid pump starvation 4 The intake system must be free of air leaks 5 Expansion joints placed at least 36 0 9m from the pump will compensate for expansion and contraction of the pipes Contact the flexible connector hose manufacturer for required maintenance care and design assistance in their use 6 Insta...

Страница 4: ...ation and create undue stress on all attached components Never start a pump when it is rotating in the reverse rotation as the added starting torque can damage the pump and related equipment OPTIONAL JACKETED HEADS Hot oil or steam can be circulated through jacketed heads by connections at the NPT pipe plugs directly above and below the shaft for heating highly viscous liquids or to thaw out liqui...

Страница 5: ...ns provided These can be used to check actual 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 motor Priming ...

Страница 6: ... the pump or pumping system from excessive pressure The valve is not meant to be used for prolonged recirculation When pumping highly volatile liquids under a high suction lift and cavitation or starving of the pump exists partial closing of the discharge valve will result in excessive noise in the relief valve Plumbing the relief valve so flow is directed back to the storage tank is recommended w...

Страница 7: ...ANCE 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 parts do not lubricate pump bearings gear reducer or any other parts while the pump is running NOTICE If pumps are repainted in the field ensure that the grease relief fittings 76A are functioning properly a...

Страница 8: ...use of wire hooks carefully pull the rotating seal assembly jacket seal face O ring 153B 153E out of the head and off the shaft Holes in the seal jacket will facilitate the removal 7 Remove the head capscrews 21 and head stud nuts 21C Two jackscrew holes are provided in the rim of the head to facilitate removal 8 Remove the head 20 or 20A from the casing 12 being careful not to nick or scrape the ...

Страница 9: ...ten the head capscrews 21 uniformly making sure the head O ring 72 slides into place without damage 4 Attach one hub 20C and bearing 24 to the mounted head without O rings or mechanical seal components Install and snug up the hub capscrews 21D NOTE This step is intended as an assembly aid and is essential to help guide the rotor and shaft into place without damaging the mechanical seal The remaini...

Страница 10: ...this time including the mechanical seal and O rings see Step 8 for mechanical seal instructions Lightly grease the shaft and the head chamfers before installing the assembly to enable the O rings to slide into place without damage Reinstall the bearing spacer 24D 12 LOCKNUT INSTALLATION The bearing locknuts 24A and lockwashers 24B MUST be installed and adjusted properly Overtightening locknuts can...

Страница 11: ...t protector 185 into the bearing cover 27 on the non driven end of the pump 16 RELIEF VALVE ASSEMBLY if equipped a Insert the valve 9 into the relief valve body 6 with the fluted end inward b Install the relief valve spring 8 spring guide 7 and guide rod 45 against the valve c Attach a new relief valve gasket 10 and the valve cover 4 on the cylinder d Screw the relief valve adjusting screw 2 into ...

Страница 12: ... the appropriate procedures and warnings as presented in this manual SCHEDULED MAINTENANCE 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 parts do not lubricate gear reducer or any other parts while the pump is running Sleeve bearings bushings are lubricated ...

Страница 13: ...e the head 20 or 20A from the casing 12 being careful not to nick or scrape the shaft 7 The disc 71 will come off with the head assembly and is attached with four countersunk allen head machine screws 71A and lockwashers 71B 8 From the open side of the pump grasp the rotor in the 3 and 9 o clock positions and gently pull the rotor and shaft 13 out of the head assembly remaining on the casing CAUTI...

Страница 14: ...o nuts 21C on the head studs f Install and tighten the head capscrews 21 uniformly making sure the head O ring 72 slides into place without damage 4 SLEEVE BEARINGS Bushings If the sleeve bearing 24 has been removed from the hub 20C a new bearing must be installed prior to attaching the hub assembly to the head a To aid installation heat the hub in an oven at 200 F 93 C before installing the beari...

Страница 15: ...n after 20 30 minutes of running the pump and readjust if necessary NOTE Some leakage is desirable to lubricate the packing but in some cases is unacceptable depending on the application 10 BLACKMER TRIPLE LIP SEAL if equipped On pumps equipped with a Blackmer triple lip seal refer to the separate literature accompanying the triple lip seal for installation instructions 11 COMMERCIAL MECHANICAL SE...

Страница 16: ...he discs with a clean cloth and alcohol to remove any dirt or foreign particles MLX Models Improper locknut adjustment Locknuts must be adjusted properly to center the rotor and shaft between the heads Refer to Locknut Installation on Page 10 MLN Models Excessively tight packing Refer to Packing Adjustment on Page 15 MLX MLN Models Contaminated mechanical seal faces Any trace of grease or dirt on ...

Страница 17: ...r specific application Continual or long term bypassing of liquid through relief valve Check for restriction in the discharge line or an improper relief valve adjustment See Relief Valve on Page 6 OTHER POSSIBLE CAUSES OF NOISE AND VIBRATION Excessively worn vanes liner or discs Bearing Worn or Damaged Loose or improperly installed piping Misalignment of pump and driver Pump base not properly moun...

Страница 18: ...r pressure spikes Pump driver driveline drive shaft misalignment Excessively worn vanes or vane slots Settled or solidified material in the pump at start up Overtightened V belts if used SEAL LEAKAGE Probable Cause O rings not compatible with the liquids pumped O rings nicked cut or twisted Shaft at seal area damaged worn or dirty Ball bearings overgreased Pump sleeve bearings worn excessively Exc...

Страница 19: ...106 A00 Page 19 20 NOTES ...

Страница 20: ... 215 GPM HXL 6 8 10 Sliding Vane Pumps 130 to 2 220 GPM Refineries Terminals Barges Ships Reciprocating Gas Compressors Liquefied Gas Transfer Boosting Vapor Recovery Hand Operated Pumps Dispensing Transfer In line Accessories Gear Reducers Bypass Valves Strainers Visit www blackmer com for complete information on all Blackmer products 1809 Century Avenue Grand Rapids Michigan 49503 1530 U S A Tel...

Отзывы:

Нет отзывов