MITSUWA SM-RZ Series User manual

1.
2. Never touch the rotating parts.
3. Operate the pump with the cover placed on the pump at any time.
Ｉｎｓｔｒｕｃｔｉｏｎ Ｍａｎｕａｌ
Ｉｎｓｔｒｕｃｔｉｏｎ ＭａｎｕａｌＩｎｓｔｒｕｃｔｉｏｎ Ｍａｎｕａｌ
Ｉｎｓｔｒｕｃｔｉｏｎ Ｍａｎｕａｌ
MITSUWA PUMP CO.,LTD.
Before operating the pump, check the rotation direction of
the motor and then attach either the belt or coupling bolt to
the pump, depending on the type of pump.
Warnings and Precautions：
Rubber Lining Self-Priming Slurry Pump
ＳＭ－ＲＺ Series
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【Safety precautions】
1. For safety ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
2. Handling and operation ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
3. Product structure ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
4. Regular check and maintenance ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
5. Procedure for replacing spare parts ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
6. Troubleshooting ・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・・
Danger
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●Before disassembling the product for repair, ensure that the motor is switched off.
●Keep unauthorized people away from the work site.
- 1 -
Indicates potential situation that may result in death or serious
injury if user mishandles the product.
Indicates potential situations that could result in minor injury
or physical damage to product if the user mishandles the
product.
Indicates potential situations that could result in physical
damage to product or minimal injury to user if the user
product is mishandled the product.
Indicates potential situations that may result in physical
damage to product if mishandled.
10
2～3
1
Before inspecting, maintaining, or overhauling the product, check and ensure both safety and
easy accessibility of the work site.
4～6
Thank you for purchasing our self-priming slurry pump with rubber lining. (hereafter referred to as
“pump”).
This instruction manual will provide guidance on proper operations of the pump, with descriptions
on procedures for pump installation, operation, maintenance, and inspection, as well as an item
check list. The manual is intended for use by operators who are overseeing operation of the pump.
Before installing, operating, maintaining, or inspecting the pump, please read this manual carefully
and follow the instructions.
There may be some minor diffrence between the actual product and the description of this
instruction manual as we continue to improve our products to offer better service to our
customers.
The following pictograms are used in this manual so that you can safely and properly use
the product and prevent bodily injuries to you and other people as well as damage to
personal property.
After fully understanding the meaning of these pictograms, read the instructions.
Before starting work, check the safety precautions and work procedures at the work site
with the person responsible to perform the work safely according to the work plan.
[IMPORTANT]
[IMPORTANT][IMPORTANT]
[IMPORTANT]
[CAUTION]
[CAUTION][CAUTION]
[CAUTION]
[WARNING]
[WARNING][WARNING]
[WARNING]
[DANGER]
[DANGER][DANGER]
[DANGER]
7
8～9
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Introduction
Introduction Introduction
Introduction
1. For safety
1. For safety 1. For safety
1. For safety
Instruction manual for self-priming slurry pump with rubber lining SM-RZ
Instruction manual for self-priming slurry pump with rubber lining SM-RZ Instruction manual for self-priming slurry pump with rubber lining SM-RZ
Instruction manual for self-priming slurry pump with rubber lining SM-RZ
series
seriesseries
series

Danger
Outlet
Inlet
- 2 -
Check each part of the pump carefully according to steps ① through ⑥ below.
After checking them, turn on the motor.
Note that it can take up to 10 minutes for the pump to draw up liquid for the first time after
being installed, depending on the length of the suction pipe.
A long continuous operation of the pump
with the discharge valve fully closed can
cause an abnormal rise in temperature
of liquid in the pump, resulting in internal
damage to the pump.
Never operate the pump for long durations with
the valve closed in order to avoid pipe clogging.
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⑤ Be sure to install an air vent valve on the discharge pipe.
(The installation of an air vent valve will shorten the pump’s self-priming time.)
① For either suction or force pump,
make sure the suction pipe is as
short as possible and with minimum
number of bends in the pipe.
Piping should be set up in such a way
that air does not collect in the suction
pipe and the pipe is ascending toward
the pump.
Make sure that no air is sucked in
through the connection, as this will
result in reduction of the pump’s
self-priming performance.
⑥ Prime the pump before operating it for the first time.
Operation without liquid in the pump casing can
lead to mechanical failure.
② Be sure to attach the safety cover to the rotating parts of the pump.
Do not touch the rotating parts during operation.
The safety cover is intended to prevent accidental contact with the rotating parts.
③ Check the tension of the V belt or coupling alignment.
Improper calibration of the tension adjustment or coupling
alignment will cause vibrations in the V belt that can lead
to abnormal heat generation or premature fracture of its bearings.
④ Before tightening the coupling connector bolt on the pump or installing the V belt,
check the rotation direction of the electric motor. (Rotating the motor backward can cause mechanical trouble.)
After checking the rotation of the motor, turn off the motor and tighten the coupling connector bolt or install the V belt.
Be careful not to get your clothing or fingers caught in the moving parts during operation.
No external adjustment is required because a special
mechanical seal is used for the shaft seal unit.
Danger
Danger
Important
Important
Important
2.Handing and operation
2.Handing and operation 2.Handing and operation
2.Handing and operation
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Alignment adjustment
Alignment adjustmentAlignment adjustment
Alignment adjustment
<Direct-driven type> <Belt-driven type>
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Start-up
Start-upStart-up
Start-up
（1）
（2）
（3）
（4）
（5）
（6）
（7）
（8）
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Caution during operation and shutdown
Caution during operation and shutdownCaution during operation and shutdown
Caution during operation and shutdown
（1）
（2）
Make an adjustment with a
straightedge so that the outer edges of
the shaft couplings on the right and left
can align with each other and clearance
(a) can be uniform over the entire
circumference.
Use a straightedge or string to avoid
misaligning the pulley.
Adjust the V belt tension. Avoid over-
tension and under-tension.
Turn the pump by hand to check whether or not it rotates smoothly and if there are any
variations in the rotation speed.
- 3 -
Piping should be contigared so that air does not collect in the suction pipe and the pipe is
ascending toward the pump.
Make sure that air does not leak through the connections. Any leak will affect the pump’
s self-priming performance.
Freezing temperatures during winter can damage the casing. Remove No.8) drain cover
during the shutdown of the pump to drain water from the pump.
No external adjustment is required because a special mechanical seal is used for the
shaft seal unit.
The pump has been aligned at our factory prior to shipment. However, misalignment may
occur during installation of the pump or piping. Check the pump for any misalignment once
the installation is finished, and realign the pump when needed. Operating the pumps while
misaligned can cause premature failure.
For both suction or force pumps, ensure the suction pipe is as short as possible and
minimize bends in the pipe.
Observe the No.18 sight glass occasionally during operation or shutdown to check for oil.
If there are impurities seen in the oil or the oil level is running low, shut down the pump,
remove No. 19 oil drain plug to replace the old oil with new oil. Check two to seven days
later whether the impurities return or not. If the oil becomes dirty within a short period of
time, replace the mechanical seal with a new one.
(For the adequate amount of oil, see Table-1.)
*The mechanical chamber is filled with oil prior to shipment. If the pump is left
unattended without operation for a long time after delivery, be sure to check the oil level
before operation and fill up the oil to proper level.
Be sure to install an air vent valve on the discharge pipe.
The installation of an air vent valve will shorten the self-priming time and ensure water
pumping.
Before operating the pump for the first time, fill the pump casing with water through the
opening of No. 9 priming cover.
After checking the rotation of the motor, install the coupling rubber and bolt or V belt.
Before tightening the coupling bolt on the pump or installing the V belt, turn on the motor
and check the rotation direction.
*The rotation direction is shown with an arrow. The motor must rotate clockwise facing
the pump seen from the bearing.
Straightedge Straightedge or string

- 4 -
Model : １ＳＭ－ＲＺ
3. Product structure
3. Product structure 3. Product structure
3. Product structure
№2 Inner casing
№26 Outlet
№1 Casing
№9 Priming cover
№15 Self-priming valve
№7 Valve case
№27 Priming elbow
№8 Drain cover
№3 Impeller
№21 Seal washer
№16 Boss cover
№22 Seal washer
№20 Sleeve №2 Inner casing
№24 O ring
№34 Back ring
№28 Glass sight
№23 Seal washer
№4 Casing cover
№12 Double mechanical seal
(a) (b) (c)
(d) (e) (f) (g)
№25 Oil drain plug
№13 Ball bearing
№14 Ball bearing
№25 Key
№33 Oil cup
№17 O ring
№19 Oil drain plug
№5 Bearing case
№6 Bearing case cover
№32 Oil seal
№18 Glass sight
(a) Secondary stationary ring
(b) Secondary rotating ring
(c) Spacer (Teflon ring)
(d) Spring
(e) Primary rotating ring
(f) Plate
(g) Primary stationary ring
№11 Shaft
№30 Bearing spacer
№25 Oil drain plug

- 5 -
Model : ２ＳＭ－ＲＺ１
3. Product structure
3. Product structure 3. Product structure
3. Product structure
№2 Inner casing
№26 Outlet
№1 Casing
№9 Priming cover
№15 Self-priming valve
№7 Valve case
№27 Priming elbow
№8 Drain cover
№3 Impeller
№21 Seal washer
№16 Boss cover
№22 Seal washer
№20 Sleeve
№2 Inner casing
№24 O ring
№23 Seal washer
№4 Casing cover
№12 Double mechanical seal
(a) (b) (c)
(d) (e) (f) (g)
№19 Oil drain plug
№13 Ball bearing
№14 Ball bearing
№25 Key
№17 O ring
№19 Oil drain plug
№5 Bearing case
№6 Bearing case cover
№18 Glass sight
(a) Secondary stationary ring
(b) Secondary rotating ring
(c) Spacer (Teflon ring)
(d) Spring
(e) Primary rotating ring
(f) Plate
(g) Primary stationary ring
№11 Shaft

Model : ３ＳＭ－ＲＺ
- 6 -
3. Product structure
3. Product structure 3. Product structure
3. Product structure
№2 Inner casing
№1 Casing
№9 Priming cover
№15 Self-priming valve
№7 Valve case
№10 Center cover
№8 Drain cover
№3 Impeller
№21 Seal washer
№16 Boss cover
№22 Seal washer
№20 Sleeve
№24 O ring
№23 Seal washer
№12 Double mechanical seal
(a) (b) (c)
(d) (e) (f) (g)
№19 Oil drain plug
№13 Ball bearing
№14 Ball bearing
№25 Key
№17 O ring
№19 Oil drain plug
№5 Bearing case
№6 Bearing case cover
№18 Glass sight
(a) Secondary stationary ring
(b) Secondary rotating ring
(c) Spacer (Teflon ring)
(d) Spring
(e) Primary rotating ring
(f) Plate
(g) Primary stationary ring
№11 Shaft
№4 Casing cover

Important
Table 1
Change oil in machine
chamber.
3SM-RZ
Every month
Every week
Check item
2SM-RZ1
180cc
245cc
Pump type
Adequate amount of oil
1SM-RZ
Note: Ethylene glycol or purified water
can be used, depending on the pump
specification.
Recommended oil in the bearing
chamber: ISO VG32
Change oil in bearing
chamber.
If the oil is very dirty or the oil level is
very low (when the oil level is lower
than the center point of the sight
glass), change the oil. If more than one
third of the oil drained from the pump is
water or pumped up liquid, replace the
mechanical seal.
Check oil condition and level
through the sight glass.
Oil recommended for the machine
chamber: Oil ISO VG10 or equivalent
Adequate amount of lubricating oil
sealed in the machine chamber:
Direct-driven type: Check the coupling
shock-absorbing rubber for wear.
Belt-driven type: Check the belt for
wear and belt tension.
Check connection between
pump and motor.
Retighten the bolts and nuts.
When the bearings have high-pitched
noise, replace the inner/outer bearings.
Check for abnormal noise
and vibration.
Every six months
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255cc
Replace worn parts.
Inspect and maintain the piping system.
Overhaul/inspection and
maintenance
Every year
Every three months
Self-Priming Slurry Pump with Rubber Lining SM-RZ Series
Frequency Check and action
4. Regular check and maintenance
4. Regular check and maintenance 4. Regular check and maintenance
4. Regular check and maintenance ！
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Warning
● Procedure for replacing worn parts
(1) Impeller （№3）
(2) Inner casing
(3) Double mechanical seal
①
②Remove No. 3 impeller.
③Remove No. 19 oil drain plug to drain oil.
④Remove No. 28 hexagonal head bolt from the casing cover.
⑤Remove double mechanical seal (c), (d), (f), and (g), together with No. 20 sleeve.
⑥Pull out double mechanical seal (a), (b), and (e).
⑦
<Caution>
・ As a double mechanical seal is constructed with a set of parts, replace the entire set.
・
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After disassembling the pump, be sure to replace the double mechanical seal
regardless of whether it is damaged or not.
Never touch the sliding surfaces of the double mechanical seal.
Check the sliding surfaces for dust. After coating the sliding surfaces with oil such as
lubricant and rust-prevention spray, install the double mechanical seal.
1SM-RZ and 2SM-RZ1
No. 2) inner casing is a built-in type. When replacing it, clean the casing, insert the
inner casing straight into the casing, and incorporate the casing into the pump.
2SM-RZ and 3SM-RZ
No. 2) inner casing is a built-in type. When replacing it, clean the casing, insert the
inner casing straight into the casing, and turn it clockwise as far as the stop ring on
the back side will go.
Remove the bolts for No. 4 casing cover and divide it into the casing and rotating
parts. The impeller is a screw-in type. Loosen the impeller by turning it
counterclockwise.
Caution
Do not hit the impeller with a hammer. Otherwise, the rubber lining can be damaged.
Be careful not to damage other rubber lining parts, too.
When replacing the double mechanical seal, be sure to also replace the seal washer and
O ring.
Remove the bolt for No. 4 casing cover to pull out the rotating part from No. 1)
casing.
Clean the parts. Reversing the removal order from ① to ⑥, install them.
* When installing the double mechanical seal, pay attention to the orientation.
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Before disassembling the pump for a repair, be sure to follow the instructions below.
(1) Turn off the motor.
(2) Drain off the fluid from the pump. Parts wet from the pumped fluid can be slippery,
depending on the fluid type. Be careful not to sustain injured by accidentally letting
wet parts slip from your hands.
(3) When using a chemical solution, put on rubber gloves to avoid direct contact with
the solution.
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5. Procedure for replacing spare parts for self-priming slurry pump with
5. Procedure for replacing spare parts for self-priming slurry pump with 5. Procedure for replacing spare parts for self-priming slurry pump with
5. Procedure for replacing spare parts for self-priming slurry pump with
rubber lining SM-RZ series
rubber lining SM-RZ series rubber lining SM-RZ series
rubber lining SM-RZ series
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Important

(4) Bearings (Nos. 14 and 15)
① Disassemble the double mechanical seal, following procedure (3) above.
② Remove the coupling or V pulley from No. 11 shaft.
③ Remove No. 19 bolt to take out No. 6 bearing case cover.
④ Remove the shaft and bearing by pulling them toward the V pulley.
⑤
⑥
Caution
■ Note that a bearing can be damaged by strong impact.
■
- 9 -
Remove No. 13 bearing from the shaft by pulling it toward the mechanical seal and
No. 14 bearing from the shaft by pulling it toward the V pulley.
If a damaged bearing goes into a freewheeling condition, the bearing case can be
worn.
If there are signs of wear or damage on the bearing case surface that comes in
contact with the bearing, replace the bearing case, too.
Clean the parts, and reinstall them in reverse of the removal order from ① to ⑤,
install them.
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Important

Install the pump properly.
Correct the direction of rotation.
Check the suction side and retighten
the parts.
Air leak.
Clean it.
Clogged strainer or suction
pipe.
Disassemble it for replacement.
The motor rotates in the
reverse direction
Air sucked in on the suction
side.
Adjust the clearance to 0.5 to 1 mm.
Low
discharge pressure
or discharge rate
The pump does
not draw water at all.
Inadequate impeller clearance.
Worn impeller.
Inadequate pump installation.
Closed discharge valve.
Check the suction side and retighten
the parts.
Insufficient priming water.
Discharge rate too high.
The impeller came off due to
reverse rotation.
Disassemble the casing and casing
cover to check the impeller.
- 10 -
Contact your dealer for repair or
replacement.
Adjust the valve opening.
Open the valve.
Water lift too high. Bring the pump closer to the water.
Adjust alignment.
Misalignment between pump
and drive shaft.
Problems Causes Remedies
The pump won’t draw
water.
RPMs too low.
Add priming water or pumped-up
liquid to the casing.
Insufficient priming water.
The pump sucks air on the
suction side.
Check the suction side and retighten
the parts.
Rev up to the prescribed RPMs.
Rusty pump.
Contact your dealer to request
repair.
Overhaul the pump.
The pump does
not rotate.
Foreign object caught in the
impeller.
Disassemble the pump to remove the
foreign material.
The engine (motor) does not
turn over.
Add priming water or pumped-up
liquid to the casing.
Water lift too high. Bring the pump closer to the water.
Clean the strainer.
Clean the pipe.
Clogged strainer.
Clogged suction pipe.
Motor or engine malfunction.
Abnormal noise
or vibration.
Check and adjust the pump
discharge rate.
Overload.
RPMs too high. Adjust the RPM speed.
Abnormal motor
or engine condition
The impeller is out of balance. Replace the impeller.
Adjust the pump installation.
Adjust alignment between pump and
drive system.
Misalignment of the drive
system.
Overload applied to bearings. Adjust connection between pump and
piping.
Strained piping.
Improper pump installation.
Adjust the pump installation.
6. Troubleshooting
6. Troubleshooting 6. Troubleshooting
6. Troubleshooting

Homepage : http://www.mitsuwapump.jp/
Inabe-gun,Mie-Prefecture,Japan 511-0251
Head office : 3617 Sin-Kurahara,Yamada,Toin-chyo
MITSUWA PUMP CO.,LTD.
MITSUWA PUMP CO.,LTD.MITSUWA PUMP CO.,LTD.
MITSUWA PUMP CO.,LTD.
TEL [phone] FAX[phone]