HITESH SINGLE PHASE SELF PRIMING MINI MONOBLOCK
PUMPS
HITESH INDUSTRIES regenerative side channel type Self priming Mini Monlblock
Pumps are designed for easy installation, simple maintenance and trouble
free service, The product is versatile, lightweight, reliable and will
give you good service for a long time when properly installed and operated
with adequate maintenance and care. Given below are some practical information
and useful tips, on the installation, operation and maintenance.
INSTALLATION ¬
1.  GENERAL
1.1 Though the pumps are self priming at static suction lift upto 8m
(26 feet) at mean sea level,
please note that the vertical distance
between the centre line of suction flange of the pump
and water level should
'NOT' be more than 4.5m (15 feet) for satisfactory discharge. This
will
also help even if there is further drawdown of the water level.
1.2 Remove cutting oil from pump, rinse with water before starting the
pumpset. Install the
pumpset near the source of water on a rigid platform
with proper foundation bolts, providing
adequate pipe supports. Excess
pipe lengths should be avoided.
2. BENDS: Ensure minimum number of bends-and airtight joints.
3. NON-RETURN VALVE: Fit a non-return valve on delivery side.
This is a must for high head
pumpsets.
4. STRAINER: Fit a strainer on suction pipe to prevent
entry of foreign material. This will
prevent ingress of dirt & dust
into the pump. Use of footvalve is not essential.
5. CLEARNCE: Maintain sufficient clearance of minimum
5 cm (2")
between the suction pipe
bottom and the bottom and sides of the tank.
In case pumpset installed on open well then
clearance should be minimum
0.5m (1.5') between pipe end, bottom of well and surrounding.
PIPING ¬
1. Use pipe sizes as specified on the name plate.
2. Always use Anerobic pipe sealent or Teflon Tape for pipe joints;
Avoid use of gunny pieces or jute ropes.
3. Remove suction & delivery flanges by unscrewing the bolts of
the pump. Fit the flanges to the
respective pipes & assemble to the
pump.
OPERATION ¬
1. WIRING: Connect the motor with correct size of cable.
2. IMPORTANT: Fill the casing of the pump with water
at the time of first starting of the
pumpset.
3. FREE ASSEMBLY: Ensure to rotate the shaft with the help of appropriate
screwdriver prior to starting, to check the, freeness of the pumpset,
a provision for checking the freeness is given by a slot on the shaft
at Fan cover side.
4. DIRECTION OF ROTATION: Check for the direction of rotation of the
motor by switching on the supply. It should be clockwise looking from
the motor side as indicated by an arrow on the delivery chamber.
5. IMPORTANT: NEVER RUN THE PUMPSET WITH GATE VALVE
CLOSED, IF PROVIDED AT
DELIVERY SIDE. DO NOT RUN THE PUMPSET DRY TO PREVENT
DAMAGE TO MECHANICAL
SEAL.
Now your pumpset is ready to deliver water to your requirement.
1. DAILY RUNNING: It is advisable to run
the pumpset for a few minutes daily to maintain
freeness.
2. STARTING AFTER A LONG DURATION: Ensure
the freeness of the pumpset as given in pt. 3
of "Operation" if
the pumpset is idle for a few days.
3. IMPORTANT: Ensure that the casing is
filled adequately with water before starting, if the
pumpset is idle for
a very long duration.
4.1 LEAKAGE THROUGH MECHANICAL SEAL: Replace
the mechanical seal if there is
excessive leakage through ,it. The following
precautions to
be taken while replacing a
mechanical seal failure.
4.1.1 Keep all the seal parts clean during handling. Any
dirt or foreign particles on the seal surface could cause a premature
seal failure.
4.1.2 Vibration of pumpset may cause seal failure. Hence
try to prevent vibrations in pumpset.
4.1.3 Thorough cleaning of the housing is necessary before
fixing counter face (stationary ring - ceramic or metal ring in rubber
L ring) to eliminate all the dirt in that area.
4.1.4 The outer diameter of the stationary L rubber
ring and housing should be slightly moistened with 10% of liquid soap
and 90% of clean
water. Using a brush moisten the shaft and interior of seal with
soap solution. Do not immerse seal in the solvent.
4.1.5 Always use fitting tube for fixing the counterface. Ensure that
the counterface is perpendicular to the shaft. Do not hammer the fitting
sleeve.
4.1.6 Before fitting the sealing ring (rotating part),
clean the shaft with a solvent (petrol or thinner). Fitting tube is
necessary for placing
the sealing ring in its working position. Push the seal smoothly
to contact ring face. Do not hammer the fitting sleeve while fitting
the sealing
ring
4.1.7 During installation see that no dirt or foreign particles are
housed inside the seal chamber.
4.1.8 Never run the pumpset dry.
4.1.9 While replacing an old mechanical seal, do not
use old sealing ring with new I counterface or old counterface with
new (sealing ring. Always
replace the seal entirely.
5. BEARING: Grease the bearings as and
when required. Replace the old grease once in two
years. Clean the bearings
with mineral turpentine.
Always use good quality lithium base
grease such as MP-2 of Indian oil.
6. AIRTIGHT JOINTS: Check for airtightness of the joints in the suction
pipe and casings.
7. STRAINER: Ensure that the clogging
does not take place in strainer. Clean the strainer
periodicaly.
8. SERVICING: In case the pump is required
to be dismantled ensure that the components are
refitted in correct sequence
and position. A suitable
mark by a paint line and sequenced
numbering on the components, prior
to dismantling will help in correct relocation of them. Any
error in
location will substantially deteriorate the performance.
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