Centrifugal Horizontal Split Case Pump Motor

Centrifugal Horizontal Split Case Pump Motor

centrifugal horizontal break up case pump motor

centrifugal horizontal break up scenario pump Product Introduction

XS type pump is a new generation of higher effectiveness single phase double suction centrifugal pumps which mainly utilised in offering liquids of the drinking water plant, air conditioner circulation drinking water, heating pipe community method, developing drinking water source, irrigation and drainage of pump stations, electricity plants, industrial h2o offer program, hearth fighting technique, shipping market and mine. It is a new substitute of SH, S, SA, SLA and SAP.

Primary performance parameters

Diameter of pump outlet: DN80 to DN900
Pump Capability: Q: 22-16236m3/h
Pump lift head range: H:7-300m
Pump working strain: P≤5Mpa
Pump operating temperature: T-20-200deg C
Pump operating voltage: 380V to 10000V, 50Hz & 60Hz

Pump Supporting Program and Companies

We value the power preserving and environmental protection,by analyzing the requirements of media and procedure environment,undertake optional combinations of supplies at the elements make contact with with media,insure security,dependability,economical procedure.

CZPT Drawings

Structural Features

 Type XS pumps function stably with significantly less noise and vibration,may be effectively operate at boosting velocity owing to limited spacing between each facet supports,thus they can commonly employed. Inlet and outlet at the very same line,the identical rotor of the XS pumps can be operated in reverse route,the XS pumps works stably with less sound and vibration and can operate at elevating speed owing to quick spacing in between both facet assistance, which make the pumps can be widely employed. The XS pumps undertake the way of middle assist, thicken the pump casing, and use cooling seals and oil lubrication bearing which make XS pump suitable working at 200ºC,specifically for supply heating net technique. XS sort pumps can be vertically  or horizontally mounted according to diverse functioning condition, with mechanical seals or packing seals.

Overall performance Information

Kind Capacity (m³/h) CZPT (m) Pace (r/min) shaft power (kw) Motor electrical power (kw) EFF(%) NPSH(m)
XS model 22-16236 7-300 2900/1450/985/485 2.9-3737 five.5-4000 sixty eight-ninety two one.7-eleven


one. Inspection before starting

Be confident to check the followings:

(one) Insure pump plate mounted on foundation

(two) Insure coupling and pump device alignment

(three) Insure piping connected by demands

(4) Insure motor set up by Set up and procedure instruction

(5) Insure the rotor of pump rotate easily (at least a circle)

(6) Insure the coupling guard put in

(seven) Insure the operator fully recognize the protection specification that they must obey and the failures may be occurred

(8) Insure the shaft seal liquid or cooling liquid lead-in by specifications

(9) Insure the shaft seal installed by operation instruction

(ten) Insure the auxiliary gadget set up by procedure instruction (If they exist)

(eleven) nsure the bearing have lubricated nicely, specially insure new pump grease or thin oil do not decrease or go bad

(12) Insure the air trapped in pump escaped.


2. Shaft Seal

Open valves effectively for stuffing box seal


3. Air exhaust

Pump and piping must fill of medium prior to starting, there are two methods: creation of vacuum or priming. If the pump operated on the suction state, exit gas by bolt hole on top of the pump casing.

Be aware: When development of vacuum, evacuate air by bolt gap on top of the pump casing. When priming, open both facet lower force volute chamber of pump casing and the leading plug, to get rid of pump vibration by remained air in pump.


4. CZPTting

(1) Near outlet valve

(two) Open up inlet valve completely

(3) Open all auxiliary piping (cooling, heating, sealing, rinsing and lubricant liquid), and examine all capability and pressure

(four) CZPTting pump soon after ending over methods

(5) When the system starting deliver medium and the stress reading at stress gauge rise up, open outlet valve little by little.

Note: Forbid pump operating CZPT liquid! Only close outlet valve when the pump start and shutdown, in any other case will injury the pump by overheating.


five. Operation


Verify functioning stage


According to Q-H efficiency curve of pump, ability Q may differ with the genuine procedure head. The head depended on the system head (such as the altitude distinction in between inlet and outlet, piping, valves, radiator and so on). So the pump truly running point B depends on pump performance

curve Q-H and technique functionality curve Q-HA.

When capacity settled, the shaft electricity, effectiveness, NPSH settled as well. Pump has restricted doing work selection. The minimum potential are demonstrated as Qmin in Q-H functionality curve. Maximum ability are depended on the cross stage of pump tolerance NPSH and technique valid NPSHA. Change valve can adjust functionality curve Q-HA of program, thus change procedure performance, makes pump procedure secure and high efficiency.

(2) Procedure management

Need to spend interest to followings:

a. Pump need to perform stably

b. Forbid pump functioning CZPT liquid

c. To stop medium temperature rise up, pump can not be run long interval when near outlet valve

d. CZPTly, the bearing temperature not greater than 35ºC of ambient temperature, absolute

procedure temperature less than 100ºC.

e. Check oil stage routinely if use skinny oil. Deep groove ball bearing of grease lubrication no require regimen servicing.

f. Do not shut inlet valve (if it is exist) when pump functioning.

g. Periodical inspection and start off jury pump.

h. Check out auxiliary piping regardless of whether connected properly.

i. Check elastic element of coupling, if worn replace immediately.

j. For stuffing box seal there should have a slight drip when operating, push stuffing box gland carefully right up until there is a slight drip (about 15-30 drop/min ).

For mechanical seal the seal leakage need to minimize gradually. It is about -5drop/min soon after

starting up couple of hrs. If the seal leakage boost steadily and get to about 30-60drop/min, should check out or alter mechanical seal.


6. Shutdown

Shut discharge valve.

Insure the pump device quit easily when shutdown the motor. Pump need to have a appropriate following-working period, reduce warmth supply at this time, so that the sent medium can awesome down entirely and avoid of making any heat inside of pump.

Close suction valve if pump end work for a extended period of time.

Shut auxiliary piping, the shaft seal should use seal lubricant even however at stopped point out. Evacuate all medium in pump and piping when freeze or cease function for a prolonged-expression, so as not to frost crack.


7. Storage

CZPTy pump has inspected strictly before shipping. CZPTmmend to adopt subsequent methods to keep pump.

(one) Shop new pump

If retailer pump at indoor, thoroughly clean dry location and stick to the storage specifications, the longest storage time is 12 months.

(2) If gear is to be saved for long intervals of time should follow beneath procedures.

a. Pump must preserve in set up state and examine function issue often. CZPTt pump when each and every thirty day period or every a few months (about five minutes). Verify running issue prior to beginning pump to insure there is ample liquid.

b. Dismantled pump from piping and check it according to section five.1 to 5.4. Implement protective agent on inside pump casing particularly the gap of the impeller, implement on suction and discharge, then include the suction.

c. Operation soon after storage

Inspect and sustain completely ahead of beginning pump, specially shaft seal and bearing lubricant. Reinstall all security defense units in accordance to need just before beginning.






starting up load way too higher

one. CZPTting CZPT closing discharge valve
two. packing way too limited guide to lubricant h2o can not stream into
3. Misguide by failing of overcurrent protector

1. Close the valve
two. Unfastened packing or check the valve of h2o seal, examine if packing ring against the nozzle of lubricant h2o,
3. Alter current limiting threshold or repair overcurrent protector.

Packing overheating

one.Packing  too tight
two.Cooling h2o can not stream into packing box
3. Damage in the floor of shaft or shaft sleeve

one. Free packing correctly
2.Unfastened packing or examine if the water seal pipe clogged
three.Restore shaft or shaft sleeve

Packing leakage too much

1. Packing worn
2. Packing also loose
3. Shaft curved or vibration
four. Improper packing bind
5. Unclean seal drinking water wore shaft
6. Shaft sleeve worn
seven. Improper packing
8.The stress of seal chamber too substantial or too lower

one. Replace packing
two. Tighten packing box gland or add much more packing
3.Align or substitute shaft
4. Rebind packing
5.Filtrate or use exterior resource as seal drinking water, fix
6.Substitute shaft sleeve
7.Substitute packing
8. Change the strain and ability of seal liquid or use a sealing liquid from an exterior source.

Mechanical seal leakage

1. The nominal force of mechanical seal lower than genuine function strain
two.Unreasonable reduction of Mechanical seal mounting,friction factors not contact successful
three. The rust of shaft sleeve surface result in rotating seal ring of mechanical seal sealing failure
4. The sent medium bodily and chemical property triggers O-ring loss elasticity
five. The shipped medium actual physical and chemical house brings about spring mechanical seal of decline elasticity
 6. Impurity enter friction components and ruined their surface area
seven. The liquid of friction factors volatilize that lead to their area burning-out

one. Adjust the kind of mechanical seal
two. Reinstall
three. Thoroughly clean shaft sleeve or modify their content
four. Modify materials
5. Replace or adjust materials
six. Filtrate or use exterior supply as rinsing water
7. Modify rinsing medium or evaluate

CZPTs more than heating

1.Incorrect centering
two.Poor adjustment or resonance in piping
3.Overlarge .axial force
4.Unbalance rotor
5. The rigidity of basis not enough
6. Incorrect bearing set up or improper clearance
7. Wore or loosened shaft
8. Poor lubrication
9. Oil splash ring can not get oil
10. Very poor circulation in stress lube

one. Readjust
2.Readjustreduce piping if required use vibration-absorptive materialcheck and repair
three. Check out and change unique operating pointcheck capacity and running condition
4. Rebalance
5.Improve the rigidity of foundation
6. Check out and pick bearing with properclearance
seven. Examine and change bearing
8. Check out the quantity of oil very first, also a lot or so minor will impact procedure, then examine the top quality of oil, specially applicable temperature
9.Examine and get rid of, the triggers of can not get oil might relevant with oil good quality, speed,wore of oil splash ring and oil circulation
ten. Check the technique of pressure lube

Vibration and noisy

one. Special doing work position B is not layout pointnot layout stage lower or high will result in vibration and noisy
2. Insecure foundation
three.Loosened anchor bolt
4.Insecure piping supports
5.Piping resonance
7. Air mobile in medium or piping leakage
eight.clogged inlet or outlet of impeller
nine. Incorrect centering
10. Unbalanced pump rotor or motor rotor
11.Worn coupling pin or unhealthy coupling link
12. Worn bearing
thirteen. Shaft curved
fourteen. Friction in rotating aspects
15.Loosened or broken rotating elements

one. Adjust program unique operating level or pump style parameters
two. Bolster foundation
three. Tighten anchor bolt
four. Strengthen piping supports
five. Increasing the distance among pump discharge and elbow, use vibration-absorptive substance in piping relationship, alter piping arrangements
6. Increase drinking water stage, lessen suction line decline, increase suction force by utilizing inlet throttle valveimprove pump cavitations efficiency
7. Check and eliminate, add discharge valve
8. Clean impeller, thoroughly clean impurity of pump and piping, check out strainer and suction nozzle
nine. Recentering
11. Replace pin, rotate coupling 180°, eradicate error of pin  hole, change the unit to insure there is a required clearance in coupling
twelve. Fix or replace bearing
thirteen. Align or substitute shaft
fourteen. Eliminate friction
15. Eradicate, change worn components

water assault

Air in pump or piping

Evacuate air and eradicate the brings about

Pump begins pumping then stops

one. Clogged in suction line or impeller
two.  Air  cell in piping
3. Carry too large  (valid NPSH also low)
4. Air enter shaft seal
five. Water level lessen way too much

1. Clear impeller, clean impurity of strainer and suction piping
two. Boost suction line, alter piping preparations, incorporate discharge valve
3. Boost entrance strain, improve suction pressure by employing inlet throttle valve lower the top of pump installation modify suction line if way too considerably line loss
4. Check strain and quantity of seal liquid if they are ideal operating requirements, change packing or other shaft seal, check the mounting situation of drinking water seal ring
five. Rise the least expensive drinking water level, enhance entrance strain, increase   suction   pressure by making use of   inlet   throttle   valve


Centrifugal Horizontal Split Case Pump Motor