MBH Ni-HARD Series Programming manual

Ni-HARD SUBMERSIBLE PUMP
Instruction, Installation, Operation
and Maintenance Manual
A Mark of Quality
A Mark of Quality
© 2018 mbh pumps (gujarat) pvt. ltd.
ISO 9001
Certied Company

2Ni-Hard Submersible Pump 3Ni-Hard Submersible Pump
CROSS SECTION DRAWING
NO. DESCRIPTION MATERIAL
1 CABLE PVC. INSULATED
SHEATHED
2 GLAND COVER C.I. IS-210 FG260
3 EYE BOLT S.S.
4 TOP COVER C.I. IS-210 FG260
5 BEARING COVER C.I. IS-210 FG260
6 HEX BOLT S.S.
7 TOP BRG. COVER C.I. IS-210 FG260
8 HEX NUT S.S.
9 WINDING COPPER
10 END RING M.S.
11 STATOR STAMPING M-47
12 STATOR BODY C.I. IS-210 FG260
13 ROTOR SHAFT S.S. 410
14 BALL BEARING (D.E.) STD. MAKE
15 OIL CHAMBER C.I. IS-210 FG260
16 MECH. SEAL UPPER CR./ S.S.
17 MECH. SEAL LOWER SIC / SIC.
18 VOLUTE NI. HARD
19 IMPELLER NI. HARD
20 IMPELLER NUT S.S.
21 SPIRAL PLATE
(WEAR PLATE) NI. HARD
22 STRAINER S.S.
23 PUMP STAND M.S.
24 CUTTER S.S.
25 NECK RING S.S.
26 OIL PLUG S.S.
27 OIL HYLUBE MILCY Gr, 40
28 BALL BEARING (NDE) STD. MAKE
© 2018 mbh pumps (gujarat) pvt. ltd. © 2018 mbh pumps (gujarat) pvt. ltd.
RECOMMENDATIONS
1. Follow maintenance schedule strictly, so as to avoid costly repairs in the long run.
2. ‘MBH’ Ni-hard submersible pumpsets are being supplied with special features
like over heating protection (Thermistor) and seal monitor sensor, control panel is
a mandatory supply with each and every pumpset. Ensure that pumpset is connected
properly to the control panel.
3. If pumping media available is falling short of the pump capacity, it will result in spurt, which
is harmful for the pump. In such a case reduce discharge by throttling.
4. Ensure that pump rotates in correct direction (clockwise). Counter clockwise rotation
result in lower discharge and increased wear. At instant of starting Ni-hard pump
should give anticlockwise jerk.
The rotation of impeller should match the arrow on the pump casing.
In case of reverse rotation the current consumption will rise and pumpset will produce
unwanted noise.
5. Avoid too many creases in the hosepipe (in case of portable installation), it results
in increased friction losses. Use the shortest possible delivery line.
6. Protect cable from damage-during storage, transportation and operation. A damaged
cable may give shock or burn the motor.
7. Always earth the unit, before starting.
8. Never hoist the pumpset up or down by the connecting cable.
9. Use NRV if pipe length is more than 4.5 mtrs.
PRECAUTION FOR LONG STORAGE
Clean the pump set with fresh water and wipe the cable. Put pump set in cool, dry
place in vertical position and the cable wrapped on top of the pump.
Do not leave cable on the oor where it is likely to get damaged.
CONSTRUCTION OF NI-HARD SUBMERSIBLE PUMPSET
‘MBH’ Ni-hard submersible pumps are of close couple compact design and have pump
below and motor above construction hence sump cleaning is possible to the minimum
level. These are powered by squirrel cage induction dry motors suitable for operation at
400/440 volts, 3 phase, 50 Hz, A.C. Supply; bearing of these pumps are grease packed.
Being a Submersible pump, it saves a lot of cost of construction compared to other
conventional pumps and also provides noise free operation. Pumps are tted with high
efciency non-clog or free ow impeller for smooth and economical pumping operation.
Since they work under pumping liquid, suction is always ooded, hence no need of
priming or suction pipe. Pumps are tted with double mechanical seals to separate
motor chamber from oil chamber and oil chamber from liquid being pumped. Pumps
are provided with special safety devices like moisture detection sensor and thermistor
protection against high winding temperature. That can also be provided with special
lowering arrangement for easy access of the pump for maintenance.
PORTABLE MOUNTING
The pump must be installed in vertical
motor position above on a solid oor.
For portable mounting, stand is supplied
along with the pumpset.
Suspend the pump from the chain and
shackle attached to the eye bolt which is
on the top cover.

CABLE CONNECTION OF MOTOR TO CONTROL PANEL
4 5
(1) D.O.L. CONNECTION
7 LEAD CABLE OR 4+4 LEAD CABLE
R, Y, B : Power Lead
M : Moisture Lead
T1, T2 : Thermistor Lead
E : Earthing Lead
L1, L2, L3 : Incoming Supply
(2) STAR-DELTA CONNECTION
10 LEAD CABLE OR
4+4+4 LEAD CABLE
A1, B1, C1 : Power Lead
A2, B2, C2 : Power Lead
M : Moisture Lead
T1, T2 : Thermistor Lead
E : Earthing Lead
L1, L2, L3 : Incoming Supply
(3) A.T.S. CONNECTION
4 CORE POWER CABLE &
4 CORE CONTROL CABLE
R, Y, B : Power Lead
M : Moisture Lead
T1, T2 : Thermistor Lead
E : Earthing Lead
L1, L2, L3 : Incoming Supply
(4) A.T.S. CONNECTION
2 PARALLEL POWER CABLE
4 CORE POWER CABLE &
4 CORE CONTROL CABLE
R, Y, B : Power Lead
M : Moisture Lead
T1, T2 : Thermistor Lead
E : Earthing Lead
L1, L2, L3 : Incoming Supply
Ni-Hard Submersible Pump Ni-Hard Submersible Pump© 2018 mbh pumps (gujarat) pvt. ltd. © 2018 mbh pumps (gujarat) pvt. ltd.
MAINTENANCE
Practically ‘MBH’ Ni-hard submersible pumpset is totally maintenance free. However
oil in seal chamber has to be checked every six months and needs to be replaced
if quality gets deteriorated or it is to be changed after one year or 5000 working hrs.
whichever is early. List of standard oil types is as under.
uBPCL - Hydrol 46 / Turbol 46 uHPCL - Hylube-30 / Milcy-40 uIOC - Servo super 10
WARNING
• Ensure that pump set rotates in the correct direction of rotation.
• Always operate pumpset with the original control panel supplied by the manufacturer.
• Never bypass any protection like Thermistor, Moisture sensor & Level controller.
In case the pump set stops due to above protection, remove the pump set from sump
and correct the defect.
• Protect the cable from damage.
• Ensure proper earthing of the pump set before starting.
PROCEDURE OF OIL CHANGE
Position the pump horizontally as shown in Fig.
Place a suitable receptable under the threaded
plug. Remove the plugs with ‘O’ ring and drain
the oil. If the oil is between light yellow and white
in colour this means the seal is intact and the
oil change can proceed. However, if there is
more water than oil in the chamber you must
inspect the mechanical seals and t new ones
if necessary Screw the threaded plugs, with ‘O’
ring back in.
CORRECT INSTALLATION
• A good water to slurry ratio.
• Sump level control - If the sump empties,
the pump should switch itself off via the
automatic control panel. The pump will
switch on via a oat switch or timer when
the level rises.
• Pump should not exceed 20 starts per hour.
• The pump should be suspended by chains at
least 200 mm from base of the sump to
ensure maximum concentration of solids
pumped.

Pump fails to deliver The discharge is too low The line current is excessive The total head is too low The power consumption is excessive Noisy operation of pump
CAUSE REMEDY
• •
The pump delivers against an
excessively high discharge pressure.
Open the isolating valve further,
until the duty point conditions have
been attained.
•
The pump and / or piping are
incompletely vented. Vent the pump & system completely.
•••
Suction line or impeller clogged. Remove deposits in the pump & piping.
•••••
Reverse rotation. Change over two of the phase leads
of the power supply cable.
• • • •
Excessive wear of the pump internals. Replace worn components by new one.
•
Operating Voltage too low. Check the supply terminals inform
the supply authorities.
• •
The motor is running on
two phase only.
Replace the defective fuse,
check the cable connection.
•
The rotor is out of balance. Clean the rotor, Rebalance the
rotor dynamically.
•
The motor refuses to run because
there is no voltage.
Check the electrical system,
inform the supply authority.
•
The pump is silted up. Clean out the inlet, Pump
components & check valve.
• •
Defective motor or cable. Please consult our works.
• • •
Defective riser pipe. (pipe & gasket) Replace defective lengths of riser
pipe by new ones, t new gasket.
•
Abnormal (excessive) drop in the
liquid level during operation. Please consult our works.
•••
The Star-Delta motor remains stuck
at the star stage during start-up. Check the switchgear/control panel.
•
The isolating valve in the discharge
line is not fully open. Open the valve fully.
•••
Excessive amount of air or gas
in the liquid pumped.
Check the operating parameters
with reference to duty point. &
correctness of submergence.
•
Defective Ammeter. Replace with new one.
•
The insulation resistance of the winding
is inadequate (The minimum resistance
in warm condition during operation should
be 1000 ohms / volt of operating volt.)
Please consult our works.
• • •
Defective radial bearing in the motor. Please consult our works.
•
Vibration caused by improper installation. Correct the installation.
•
The temp. sensor for monitoring the
temp. of winding in the control circuit
has stopped the motor because the
winding temp is too high.
Wait for some time so that the motor
cools down & the pumpset will start
automatically.
6 7
Ni-Hard Submersible Pump Ni-Hard Submersible Pump© 2018 mbh pumps (gujarat) pvt. ltd. © 2018 mbh pumps (gujarat) pvt. ltd.
TROUBLE SHOOTING CHART
Ni-HARD
SUBMERSIBLE
PUMP Ni-HARD SUBMERSIBLE PUMP
The pump is warranty against defects in material and
workmanship under normal use and service for the period of 15
months from the date of purchase or 12 months from the date
of commissioning, whichever is less.
The General terms and conditions for above warranty are :
1. This warranty is valid only if the pump is operated strictly as
per the Instructions given in the user guide attached herewith.
2. Our obligation shall be limited to rectifying; repairing or
replacing defective items, ex-works/service station/Authorized
Service Center, provided the purchaser has given immediate
written notice. The equipment for repairs should be returned
to us duly packed, on prepaid freight basis.
Model : Pump Sr. No.
Customer Name :
Address :
Date of Purchase / Bill No.:
Dealers Name :
Signature : Date :
14, G.I.D.C. Naroda Indl. Estate, Ahmedabad-382 330, India.
Phone : [phone]
E-mail : [email protected] / [email protected]
Website : www.mbhpumps.com
WARRANTY
WARRANTY

OTHER PRODUCTS
OTHER PRODUCTS
14, G.I.D.C. Naroda Indl. Estate, Ahmedabad-382 330, India.
Phone : [phone]
E-mail : [email protected]
[email protected]
Website : www.mbhpumps.com
marg 08/2018
ISO 9001
Certied Company
A Mark of Quality
A Mark of Quality
POLDER
PUMP
HORIZONTAL
SPLIT CASING PUMP
SUBMERSIBLE
SEWAGE PUMP
CENTRIFUGAL
BACKPULL OUT PUMP
PORTABLE
SUBMERSIBLE PUMP
SUBMERGED
CENTRIFUGAL PUMP
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