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.
u
BPCL - Hydrol 46 / Turbol 46
u
HPCL - Hylube-30 / Milcy-40
u
IOC - 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 fit 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 float 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.