KIRLOSKAR CPHM Programming manual

IOM/CPHM/DEC19/01 ISSUE DATE:14-12-2019
Page 0 | 48 REVISION NO.1
INSTRUCTIONS O N
INSTALLATION
OPERATION A N D
MAINTENANCE FOR
K IR LO S K A R P U MP
TYPE CPHM

IOM/CPHM/DEC19/01 ISSUE DATE:14-12-2019
Page 1 | 48 REVISION NO.1
KIR OSKAR BROTHERS IMITED
Udyog Bhavan, Tilak Road, Pune 411 002 (India)
WARRANTY
We warrant that the pump supplied by us is free from defective material and
faulty workmanship. This warranty holds good for a period of 12 months from
the date of commissioning of the equipment or 18 months from the date of
dispatch from our factory, whichever is earlier. Our liability in respect of any
complaint is limited to replacing part/parts free of charge ex-works or repairs of
the defective part/parts only to the extent that such replacement/repairs are
attributable to or arise solely from faulty workmanship or defective material.
The warranty holds good only for the products manufactured by us.
KIR OSKAR BROTHERS IMITED

IOM/CPHM/DEC19/01 ISSUE DATE:14-12-2019
Page 2 | 48 REVISION NO.1
CONTENTS
1. GENERA
2. INSTA ATION
3. OPERATION
4. TECHNICA DATA
5. MAINTENANCE
6. OVERHAU ING
7. PART IST AND CROSS-SECTIONA DRAWING
8. GENERA OUT INE DIMENSIONS OF CPHM PUMPS
CAUTION
THIS INSTRUCTION MANUA COVERS THE GENERA REQUIREMENTS OF
INSTA ATION, OPERATION AND MAINTENANCE. HOWEVER, THE END
USER SHOU D REFER TO THE DRAWINGS AND DOCUMENTS IF SUPP IED
AGAINST SPECIFIC ORDER.
P EASE FURNISH PUMP TYPE, NAME OF THE PART, PART NUMBER,
MATERIA CONSTRUCTION AND OTHER NAMEP ATE DETAI S WHI E
ORDERING SPARE PARTS FOR THE PUMP.

IOM/CPHM/DEC19/01 ISSUE DATE:14-12-2019
Page 3 | 48 REVISION NO.1
1. GENERAL:
1.1 The booklet covers instructions for following pump types of CPHM
series.
UNIT-5 UNIT-7 UNIT-9 UNIT-11 UNIT-
11A
UNIT-
11B
UNIT-13 UNIT-13A
32/13 25/26A 65/32 125/26
(
2900
RP
M
)
125/45 150/43
200/38M 125/32
(2900RPM)
32/16 32/26 80/32 200/46
32/16A
40/26
80/40
150/52
32/20
40/32
80/40N
32/20A
50/26
1
00/26
40/13
50/32
100/32
40/16
65/16
100/40
40/20
65/20
125/26
40/20A
65/26
125/32
50/13
65/26N
125/40
50/16
80/16
125/40
50/16A
80/20
150/32
50/20
80/26
150/32
65/13
100/20
150/40
65/43
NOTES:
1. CPHM pumps with driving unit-11, 11A, 11B, 1 3 , 1 3 A are
supplied with oil lubrication bearings as a standard supply.
2. Pump models with suffix “N” are modified for improvement in rising
nature performance towards shut-off.
1.2 Description of ‘CPHM’ pumps:
KIR OSKAR CPHM pumps are of back pullout design which enables to remove
the rotating unit of the pump for inspection and repairs without disturbing the
pipe connections.
1.3 The complete range of CPHM pumps is covered by eight driving units thereby
reducing inventory and achieving interchangeability of parts.
1.4 Pumps when properly installed and given due care in operation and
maintenance should operate satisfactorily for a long period.
1.5 When the pump is received, sometime before the actual use, it should be
inspected and located in a dry place. The coupling should be rotated once in a
month to prevent pitting of bearing surfaces.

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Page 4 | 48 REVISION NO.1
2. INSTALLATION:
2.1 For location, preparing foundation, installation, alignment, piping, general
maintenance, trouble, publication ‘GENERA INSTRUCTIONS FOR
INSTA ATION, OPERATION AND MAINTENANCE OF KIR OSKAR
CENTRIFUGA PUMPS’ which is also printed along with this booklet must be
followed carefully. If the pump is drawing liquid from the vessel under vacuum,
then vacuum equalizing connection piping must be made as per instructions
given in above publication. The external sealing connection to the pump, if
applicable, must be made after installing and before commissioning the pump.
2.2 Mounting and alignment:
A spacer type flexible coupling is recommended to connect pump shaft to the driver.
By using spacer type coupling, the complete rotating unit can be removed from the
volute without removing pump casing or motor and without disconnecting piping
connections. This also avoids any re-alignment of pump and motor after reassembly of
rotating unit. However, other types of coupling can be supplied against request.
Alignment:
A WAYS REMEMBER “F EXIB E COUP ING IS NOT A UNIVERSA JOINT”.
Correct alignment is essential for the smooth operation of the pump. There are two
types of mis-alignment between the pump shaft and the drive shaft which are –
i. Angular mis-alignment- Shaft with axis concentric but not parallel.
ii. Parallel mis-alignment- Shaft with axis parallel but not concentric. Mis-
alignment is checked by using straight edge as shown in Fig. 1 at 90
0
apart.
STD COUP ING
STEE STRAIGHT EDGE
STEE STRAIGHT
EDGE
CORRECT
3mm
INCORRECT PARA E
MISA IGNMENT
STEE STRAIGHT EDGE
INCORRECT ANGU AR
MISA IGNMENT
Fig. 1

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Page 5 | 48 REVISION NO.1
2.3 Before commissioning the pump set, please ensure:
2.3.1 The pipe connections are flushed and tightened properly.
2.3.2 Alignment is proper.
2.3.3 Auxiliary piping connection such as sealing / flushing, etc., are made.
2.3.4 ‘CPHM’ pumps are grease lubricated as standard supply. However, against specialty
oil lubrication can be given. Then the pump is provided with constant level oiler.
Please note that CPHM pumps in units- 11, 11A, 11B, 13, 13A are always with oil
lubrication.
2.3.4.1 Constant level oiler:
Fix the constant level oiler and fill the oil. Procedure for fitting the constant level oiler
and method of filling oil is given below.
Constant level oiler has plastic container and aluminum body as a standard supply.
Connection stem is ¼” BSP tapped and its capacity is 70ml approx. If the constant
level oiler is properly fitted and oil is filled as per instructions given, practically no
attention is required as far as lubrication of bearing is concerned other than to
replenish the visible reserve supply of the oil in the container (Refer Fig. 2, 3 and 4).
2.3.4.2 Method of fitting:
Screw constant level oiler stem into the tapped hole of the bearing housing reservoir.
Before fitting oiler, check the level of the tapped hole with the help of turn bar with
¼” BSP tapping at one end and a sprit level (Refer Fig. 2). If the level is incorrect and
oiler tilts downward, oil will not flow from oiler into the reservoir (Refer Fig. 3). Hence
it is necessary to check the level before fitting in the constant level oiler.
2.3.4.3 Method of filling the oil:
Tilt the container (Refer Fig. 4) and fill it with oil through stem of the oiler. Replace
the container and allow oil to flow into the reservoir. The oil in the container shall
flow into the bearing housing reservoir and shall become empty. Repeat above
procedure till the level in the reservoir is equal to the level of which the oiler is
adjusted. When the desired level is attained the oil in container shall remain steady at a
position. Visible level of the oil in the container indicates that bearing housing reservoir
is filled up to the mark.

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Page 6 | 48 REVISION NO.1
CAUTION
1. In no case oil should be filled in directly into the bearing housing reservoir, through
breather cap.
2. Replenish the visible reserve supply of oil in the container as oil is used up.
3. Please ensure that “Air Groove” provided on aluminum body on which plastic
container rests, is not clogged with dust/fiber, oil film, etc. This groove allows
atmospheric air to enter inside the body to maintain oil level in bearing housing.
SPIRIT
EVE
Fig. 2
CORRECT METHOD
Fig. 3
INCORRECT METHOD
A WAYS FI OI HERE
NEVER FI OI HERE
Fig. 4

IOM/CPHM/DEC19/01 ISSUE DATE:14-12-2019
Page 7 | 48 REVISION NO.1
3 OPERATION:
3.1 Before startin the pump check the followin :
3.1.1 The pump rotates freely by hand.
3.1.2 Fill the grease/oil for bearings, if not done earlier. The bearings are packed with
grease/oil initially at the factory, however if the pump is stored for a longer time it is
necessary to refill the grease/oil in the bearings. Check the level of the oil in constant
level oiler is up to the mark.
3.1.3 The sealing liquid connections are properly tightened and adjusted.
3.1.4 The direction of rotation of the driver should correspond to the direction of rotation of
the pump.
3.1.5 The pump casing and suction pipe line is fully primed with liquid.
3.1.6 Valve on delivery side is closed.
3.1.7 The cock for pressure gauge connection is closed.
3.1.8 The gland bolts are properly tightened.
3.2 Startin the pump:
3.2.1 Start the pump. et the prime mover pick up its full speed.
3.2.2 Open the valve on delivery line gradually.
3.2.3 Open the cock for pressure gauge connection.
3.3 During running the pump check the following things and regulate, if necessary.
3.3.1 The pump is running smooth.
3.3.2 The bearings are not getting abnormally hot.
3.3.3 The gland is properly tightened to ensure sufficient leakage to dissipate heat generated.
Maximum permissible leakage is 60 to 80 drops per minute.
3.3.4 Head and capacity developed by the pump is as specified.
3.3.5 Power consumption is within limit.
3.3.6 Ensure that there is no mechanical friction in the pump.
3.3.7 Stop the pump immediately, if any defects are detected. Do not start the pump unless
defects are rectified. Report immediately to the supplier, if it is not possible to rectify
the defects.
3.4 Durin stoppin the pump:
3.4.1 Close the valve on delivery side.
3.4.2 Stop the motor.
3.4.3 If the pump is not required to be operated for a long time, drain the casing completely.
If the pump is required to be stored for a long time the bearing housing should be
dried internally with hot air and should be flushed with moisture free protective
such as light oil or kerosene.

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Page 8 | 48 REVISION NO.1
4. TECHNICAL DATA:
4.1 Direction of rotation:
The direction of rotation is clockwise when viewed from driving
end.
4.2 Speeds:
The limitations of the rotational speeds for CPHM pumps shall be as
follows.
Sr.
No.
Pump Type
Water Fill
Capacity
( itres)
Weight
(kg
approx.)
Max.
solid
size
(mm)
Max.
Rotational
Speed
(rpm)
1 CPHM 32/13 0.8 32 4.0 3000
2 CPHM 40/13 1.1 34 6.0 3000
3 CPHM 50/13 1.8 36 11.0 3000
4
CPHM 65/13
2.4
59
15.0
3000
5
CPHM 32/20
1.2
40
3.5
3000
6 CPHM 32/20A 1.2 40 3.5 3000
7 CPHM 40/20 1.5 41 3.5 3000
8 CPHM 40/20A 1.5 41 3.5 3000
9
CPHM 50/20
2.1
45
6.
0
3000
10
C
PHM 32/
16
1.0
34
3.4
3000
11 CPHM 32/16A 1.0 34 3.4 3000
12 CPHM 40/16 1.2 36 4.5 3000
13 CPHM 50/16 1.8 39 9.0 3000
14
CPHM 50/16A
1.8
39
9.0
3000
15
CPHM 65/16
2.8
65
12.0
3000
16 CPHM 80/16 4.0 73 18.0 3000
17 CPHM 65/20 3.1 67 11.0 3000
18 CPHM 80/20 4.4 90 15.0 3000
19
CPHM 100/20
6.5
119
20.0
3000
20
CPHM 25/26A
1.7
72
3.0
3000
21 CPHM 32/26 1.8 76 3.0 3000
22 CPHM 40/26 2.1 77 3.5 3000
23 CPHM 50/26 3.9 79 5.0 3000
24
CPHM 65/26
4.2
82
9.0
3000
25
CPHM 65/26N
4.2
82
9.0
30
00
26 CPHM 80/26 4.9 99 12.0 3000
27 CPHM 40/32 1.8 87 4.5 3000*
28 CPHM 50/32 4.5 102 5.0 3000*
29
CPHM 100/26
8.0
133
17.0
3000
30
CPHM 125/26
12.0
152
22.0
1500
31 CPHM 125/26 at 2900
RPM
12.0 190 22.0 3000
32 CPHM 65/32 7.3 114 8.0 3000*
33 CPHM 80/32 8.3 120 9.0 3000*
34
CPHM 100/32
14.0
145
13.0
3000*
35
CPHM 125/32
14.0
160
17.0
1500
36 CPHM 125/32 14.0 179 17.0 2900

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Page 9 | 48 REVISION NO.1
Sr.
No.
Pump Type Water Fill
Capacity
( itres)
Weight
(kg
approx.)
Max.
solid
size
(mm)
Max.
Rotational
Speed
(rpm)
37
CPH
M 150/3
2
18.
0
221
2
3.0
1500
38
CPHM 150/32N
18.0
221
23.0
1500
39
CPHM 65/43
10.0
195
15.0
1500
40
CPHM 80/40
11.0
124
8.0
1500
41
CPHM 80/40N
11.0
124
8.0
1500
42
CPHM 100/40
13.8
134
11.0
1500
43
CPHM 125/40
15.5
180
13.0
1500
44
CPHM 125/40N
15.5
180
13
.0
15
00
45
CPHM 200/38M
25.5
550
26.0
1500
46
CPHM 200/46
27.5
560
26.0
1500
47
CPHM 125/45
17.0
290
14.0
1500
48
CPHM 150/40
15.5
285
14.0
1500
49
CPHM 150/43
21.0
300
14.0
1500
50
CPHM 150/52
22.0
435
15.0
1500
NOTE:
Please contact the supplier or manufacturer if the pump is to be used for other
than the specified speeds.
4.3 Bearin s and Lubrication
4.3.1 Specifications of bearings, oil seals and felt rings.
PART
No.
DESCRIPTION
UNIT
-
5
UNIT
-
7
UNIT
-
9
UNIT
-
11,11A
,11B
UNIT
-
11B
UNI
T
-
13,13A
50
2.1
Fel
t ring (DE)
25 x 38 x 6T
43 x 30 x 6T
40 x 53 x
6T
-
-
502.2
Felt ring (NDE)
25 x 38 x 6T
35 x 47 x 5T
45 x 58 x
6T
-
-
500.1
Oil Seal (DE)
25 x 37 x 7T
32 x 45 x 7T
72 x 42 x
10T
72 x 50 x
10T
72 x 50 x
10T
60 x 85 x
13T
500.2
Oil
Seal (N
DE)
2
5 x 37
x 7T
32 x 47 x 7T
60 x 45 x
8T
72 x 50 x
10T
72 x 50 x
10T
65 x 85 x
13T*

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Page 10 | 48 REVISION NO.1
4.3.2 Bearing Details:
DRIVING
UNIT
NO.
SPEED
IN
RPM
BEARING
ARRANGEMENT
BEARING
SIZE
DE NDE
5
7
9
11
11A
11B
13,13
A
Upto 3000 rpm
Upto 3000 rpm
Upto 3000 rpm
Upto 3000 rpm
Upto 1500 rpm
Upto 1500 rpm
Upto 1500 rpm
Standard supply
Standard supply
Standard supply
Standard supply
Standard supply
Standard supply
Standard supply
SKF-6305
(1 No.)
SKF-3307
(1 No.)
SKF-3309BG
(1 No.)
SKF-3311
(1 No.)
SKF-7311BECP
2 No./1 pair
SKF-7311BECP
2 No./1 pair
SKF-7313BG
2 No./1 pair
SKF-6305
(1 No.)
SKF-NU307
(1 No.)
SKF-NU309
(1 No.)
SKF-NU311
(1 No.)
SKF-NU311
(1 No.)
SKF-NU311
(1 No.)
SKF-NU313
(1 No.)
NOTES:
1 .Bearings of SKF make or equivalent are used.
2. The bearing arrangement mentioned above are suitable for suction pressure less
than 2 kg/cm
2
. For application involving suction pressure above 2 kg/cm
2
please
refer to Marketing, Pune.
3. C3 clearance bearings are used.
4. Axial running clearance shall be less than 0.45 mm for all above
bearing arrangements.
5. Maximum allowable temperature of bearings shall be 80
0
C.
6. Bearings are grease lubricated for unit Nos. 4, 5, 7 and 9 and oil lubricated for
unit-11 and 13 pumps. Oil level in the bearing housing is maintained upto the
desired level with the help of constant level oiler. Constant level oiler is our
standard supply.

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Page 11 | 48 REVISION NO.1
4.3.3 ubrication of bearings:
ubrication with grease:
Bearings are grease lubricated. Following are the details of grease grade to be used.
MANUFACTURER SPEED
1500 RPM
3000 RPM
INDIAN OI
HINDUSTAN
PETRO EUM
SERVOGEM-3
NATRA-3 OR
ITHON-3
SERVOGEM-2
NATRA-2 OR
ITHON-2
CA TEX STARFAX-3 STARFAX-2
Quantity of grease:
DRIVING UNIT QUANTITY APPROX. (GRAMS)
5 6
7 10
9 14
ubrication with oil:
Bearings are oil lubricated. Following are the details of oil grade to be used.
MANUFACT
URER
SPEED
1500
RPM
3000
RPM
INDIAN OI SERVOSYSTEM-100 SERVOSYSTEM-68
HINDUSTAN
PETRO EUM
ENK O
-
57
ENK O
-
53
Quantity of oil:
DRIVING UNIT QUANTITY APPROX. ( ITRES)
11 1.0
13 1.5
4.3.4 Bearing temperature:
A) Maximum allowable temperature of bearings is 35
0
C above ambient.
B) In case of new bearings, renew grease/oil after about 200 hours and then after
twice in a year, if bearing temperature is always below 50
0
C and there is only
small risk of contamination. If the bearing temperature is upto 80
0
C and
if there is danger of contamination, the grease/oil should be renewed after
about every 3 months.
4.4 Specification of stuffing box packing, gaskets and “O” rings:
(Refer Chart No. 4.4(a), 4.4(b) on the next page).

4.
4
(a)
SPECIFICATIO
NS
OF
STUFFIN
G
BOX
PACKING
GASKET
AND
“O”
RING
FOR
DRIVING
U
NITS
5,7,9
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/CPHM/
DEC19
/0
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Page: Page 12 of 48
Issue Date:
14/12/2019
Revision No.:1
PART
NO.
DESCRIPTION
UNIT NO.
CPHM 5 CPHM 7
CPHM 9
50/20
40/20 32/20 50/16 40/16 32/16 65/13 50/13 40/13 32/13
50/32
40/32 25/26 80/20 65/26 50/26 40/26 32/26 100/20 80/20 65/20 80/16 65/16
65/43
65/40 150/40 125/40 100/40 80/40 150/32 125/32 100/32 80/32 65/32 125/26 100/26
G AND PACKING ARRGT. WITH
ANTERN RING
2 + + 3 2 + + 3 2 + + 3
4300001 G AND PACKING SIZE
(O.D. x I.D. x THICK)
51 x 35 x 8 65 x 45 x 10 75 x 55 x 10
STRAIGHT ENGTH OF G AND
PACKING IN mm.
140 180 205
5110001 GASKET FOR CASING & CASING
COVER
114 ID x
152 OD x
1 TH
176 ID x
188 OD x
1 TH
216 ID x
230 OD x
1 TH
176 ID x
188 OD x
1 TH
216 ID x
230 OD x
1 TH
266 ID x
282 OD x
1 TH
331 ID x
348 OD x
1 TH
266 ID x
282 OD
x 1 TH
331 ID x
348 OD x
1 TH
411 ID x
432 OD
x 1 TH
431 ID x
450 OD
x 1 TH
5140001 GASKET FOR BEARING COVER
78 SQ x 1 T 112 x 102 x 1 TH 124 x 134 x 1 TH
5150001 GASKET FOR IMPE ER AND
SHAFT S EEVE
30 OD x 25 ID x 1 TH 40 OD x 35 ID x 1 TH 50 OD x 44 ID x 1 TH
5160001 GASKET FOR MECH. SEA
52 ID x 64 OD x 1 T 76 ID x 94 OD x 1 T 76 ID x 94 OD x 1 T
5250101 “O” RING FOR CASING COVER
104 ID x 3 TH 123 ID x 3 TH 145 ID x 3 TH
5231101 “O” RING FOR BEARING
HOUSING
125 ID x 3 T 150 ID x 3 T 150 ID x 3 T
5250201 ‘O’ RING FOR ANTERN BRACKET
142 ID x
3 TH
175 ID x
3 TH
215 ID x
3 TH
175 ID x
3 TH
215 ID x
2
3 TH
88 ID x 3 TH
85 ID x
3 TH
265 ID x 3 TH
5230301 ‘O’ RING FOR BEARING
CARTRIDGE
72 ID x 3 TH 108 ID x 3 TH
6820001 GASKET FOR IMPE ER AND
IMPE ER NUT
28 OD x 20 ID x 1 TH 38 OD x 28 ID x 1 TH 48 OD x 38 ID x 1TH
6850001 GASKET FOR OI WE COVER
99 OD x 55 ID x 1 TH 99 OD x 55 ID x 1 TH 99 OD x 55 ID x 1 TH
NOTE: CORRECT IQUID SPECIFICATIONS SHOU D BE INFORMED TO US TO RECOMMEND SUITAB E GRADE OF ST. BOX PACKING.
A DIMENSIONS ARE IN MM.

4.
4
(a)
SPECIFICATIO
NS
OF
STUFFIN
G
BOX
PACKING
GASKET
AND
“O”
RING
FOR
DRIVING
U
NITS
5,7,9
IOM/CPHM/
DEC19
/0
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Page: Page 13 of 48
Issue Date:
14/12
/2019
Revision No.:1
.
PART NO. DESCRIPTION
UNIT NO.
CPHM 11, 11A, 11B CPHM 13
125/45 150/43 125/26
150/52
150/50M 200/46 200/38M
G AND PACKING ARRGT. WITH
ANTERN RING
2 + + 3 2 + + 3
4300001 G AND PACKING SIZE
(O.D. x I.D. x THICK)
75 x 55 x 10 105 x 80 x 12
STRAIGHT ENGTH OF G AND
PACKING IN mm.
205 295
5110001 GASKET FOR CASING & CASING
COVER
266 ID x 282 OD
x 1 TH
454 ID x 474 OD
x
1 TH
471 ID x
491 OD x
1 TH
402 ID x 425
OD x 2 TH
460 ID x 490
OD x 2 TH
685 ID x 710
OD x 1 TH
520 ID x 540
OD x 2 TH
5140001 GASKET FOR BEARING COVER
146 x 156 x 1T 140 x 185 x 1 T
5150001 GASKET FOR IMPE ER AND SHAFT
S EEVE
50 OD x 44 ID x 1 TH 74 OD x 69 ID x 1 TH
5160001 GASKET FOR MECH. SEA
76 ID x 94 OD x 1 T 83 ID x 94 OD x 1 T
5250101 “O” RING FOR CASING COVER
145 ID x 3 TH 175 ID x 3 TH
5231101 “O” RING FOR BEARING HOUSING
150 ID x 3 T 207 ID x 3 T
5250201 ‘O’ RING FOR ANTERN BRACKET
265 ID x 3 TH 308 ID x 3 TH
5230301 ‘O’ RING FOR BEARING CARTRIDGE
--------------- -------------
6820001 GASKET FOR IMPE ER AND
IMPE ER NUT
48 OD x 38 ID x 1 TH 69 OD x 56 ID x 1 TH
6850001 GASKET FOR OI WE COVER
99 OD x 55 ID x 1 TH 99 OD x 55 ID x 1 TH
NOTE: CORRECT IQUID SPECIFICATIONS SHOU D BE INFORMED TO US TO RECOMMEND SUITAB E GRADE OF ST. BOX PACKING.
A DIMENSIONS ARE IN MM.
.

IOM/CPHM/DEC19/01 ISSUE DATE:14-12-2019
Page 14 | 48 REVISION NO.1
4.5 Mechanical seal Specification: Please refer C/S drawings supplied against order
4.6 Interchan eability:
Parts standardization is optimized utilizing interchangeable components to cover a
very wide range of requirement. This unique feature enables the customer to have a
very low spare parts inventory even though he may have many sizes of these
pumps. Interchangeability chart is given in 4.6.1.
4.6.1 Interchangeability chart of CPHM- Unit 5,7,9,11,13 pumps:
Sr. No. PUMP SIZE CASING IMPE ER CASING
COVER
BRG. BRKT. &
SHAFT
1 32/13 4 4 4 2
2 40/13 5 5 4 2
3 50/13 6 6 4 2
4 65/13 7 7 4 2
5 32/20 8 8 5 2
6 32/20A 8 9 5 2
7 40/20 9 10 5 2
8 40/20A 10 11 5 2
9 50/20 11 12 5 2
10 32/16 12 13 6 2
11 32/16A 13 14 6 2
12 40/16 14 15 6 2
13 50/16 15 16 6 2
14 50/16A 16 17 7 2
15 65/16 17 18 8 3
16 80/16 18 19 8 3
17 65/20 19 20 9 3
18 80/20 20 21 9 3
19 100/20 21 22 9 3
20 32/26 22 23 10 3
21 65/26N 25 27 10 3
22 80/26 26 28 10 3
23 40/32 27 29 11 3
24 50/32 28 3 12 3
25 25/26A 29 31 10 3
26 100/26 30 32 13 4
27 125/26 31 33 13 4
28 65/32
(1450RPM) 32 34 14 4
29
65/32
(2900RPM)
32 35 12 4
30 65/43 46 48 22 4
31 80/32 35 37 14 4
32 100/32 36 38 15 4
33 125/32 37 39 15 4
34 150/32 38 40 16 4

IOM/CPHM/DEC19/01 ISSUE DATE:14-12-2019
Page 15 | 48 REVISION NO.1
5. MAINTENANCE:
Preventive maintenance schedule is the periodical checks and precautions by which
possibilities of failures and break-down are minimized.
5.1 Daily Checks:
5.1.1 An hourly record of suction and delivery pressure, discharge quantity input to the
pump driver should be maintained.
5.1.2 Bearing temperature, oil level, stuffing box leakage/stuffing box temperature.
5.1.3 Noise and the vibrations are the first signs of impending troubles like cavitation, air
lock, bearing failure, choking of impeller or casing and such other operating troubles.
The pump performance should therefore be checked for noise and the vibrations.
5.2 Periodical checks:
5.2.1 The temperature of the bearing should be measured by a thermometer. Safe maximum
temperature a bearing can attain is 35°C above ambient.
5.2.2 The lubricants of the bearings should be checked. The lubricant might get
contaminated with foreign material or get blackened due to overheating. In such cases,
bearings should be flushed and charged with fresh lubricants.
5.2.3 Check the stuffing box leakage, normal leakage should be sufficient to dissipate heat
generated. In case the packings are worn out, all the packing rings should be replaced.
Replacement of one or two rings or addition of rings should never be done.
5.2.4 The alignment of pump unit should be checked. Due to operational vibrations,
atmospheric temperature or stress induced by the weight of piping, the alignment may
get disturbed.
5.2.5 Sufficient quantity of suitable type of lubricant and stuffing box packing should be
kept for daily and emergency use.
5.2.6 Calibrate the measuring instruments.
Sr. No. PUMP SIZE CASING IMPE ER
CASING
COVER
BRG. BRKT. &
SHAFT
35 150/32N 38 41 16 4
36 80/40 39 42 17 4
37 80/40N 39 43 17 4
38 100/40 40 44 17 4
39 125/40 41 45 17 4
40 125/40N 41 46 17 4
41 150/40 42 47 17 4
42 125/26
(2900RPM) 31 33 11 5
43 200/38M 43 34 19 6
44 200/46 44 35 20 6
45 150/52 49 51 25 6
46 125/45 47 49 23 7
47 150/43 48 50 24 8
48 125/32
(2900 RPM) 49 51 15 8

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Page 16 | 48 REVISION NO.1
5.3 Annual checks:
5.3.1 The pumps should be overhauled completely to check the clearance and to replace
worn out parts. Clearance between shaft sleeve and throat bush, lantern ring and the
shaft sleeve, etc., are very important. The bearings should be cleaned thoroughly and
lubricated. The stuffing box should be replaced by correctly located lantern ring.
5.3.2 The effects of liquid handled on pump components should be checked. If abnormal
corrosion, erosion is observed, the component should be replaced with that of suitable
material.
5.3.3 The auxiliary pipelines and functioning of the auxiliary systems should be checked. The
main pipe also should be checked for scaling, leakage, etc.
5.3.4 The measuring instruments, gauges, etc., should be recalibrated.
5.3.5 Full running test may be carried out to check whether there is any fault in
the performance, in comparison with original performance.
5.3.6 Piping supports should be checked so that the pipes do not induce unwanted stresses
on the pump.
5.4 MECHANICAL SEAL IN ‘CPHM’ PUMPS (NOTE THAT MECHANICAL SEALED CPHM
PUMPS ARE SUPPLIED UNDER SPECIFIC ORDER ONLY).
5.4.1 The mechanical seal is a precision product having been subjected to quality control
throughout all stages of manufacture. The seals are designed to accommodate
reasonable tolerances in the equipment but in order to obtain the maximum life with
trouble-free performance; the equipment should be adequately maintained.
When the mechanical seal is functioning satisfactorily without any leakage, etc., the
preventive maintenance is not advocated. If leakage occurs, a thorough check-up is
needed. While fitting the mechanical seals initially at pump manufacturer’s side, due
care is taken and the running test is conducted to ensure the performance of seals.
ike other parts in the equipment the mechanical seals are subject to wear at the
mating faces of the rotating and stationary ring. The rate of wear will differ with the
operating conditions and various other factors such as lubricating property of liquid
pumped, the presence of impurities in liquid and other operating conditions. In view of
this no firm recommendations can be given for renewal of seal rings/ complete seals.
Before re-assembly, please check up the following points to ensure the proper fitting
and satisfactory operation of the mechanical seal.
1. Shaft sleeve OD should be within +0.00 mm or –0.05 mm for specified seal
size.
2. eading edge of shaft sleeve is chamfered.
3. Run out of the shaft at the seal face is within 0.05mm.
5.4.2 Flushing the mechanical seal face/product recirculation of liquid at the seal face.
Flush fluids are those which are different from the fluid being handled or pumped
liquid. If they are introduced from an external source, flushing should be done at
pressure at least one atmosphere above the vapour pressure of the liquid at the
temperature being pumped. Flushing liquid quantity should be approximately 0.3 to 0.5
m
3
/hr at the minimum pressure of 0.7 kg/cm
2
above pressure of liquid at stuffing box.
For specific application refer cross sectional drawing supplied against order.

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Page 17 | 48 REVISION NO.1
CAUTION:
Please refer to the CS drawing supplied against O/A for flushing/product recirculation
recommendation.
5.4.3 Quenching:
Quench fluids are introduced to the low pressure side of seals for following reasons.
a. Cooling to remove heat from stationary seal faces and mechanical seal cover.
b. Smothering to prevent air from reaching the low pressure side of seal face. In
some cases, sealed fluids can react with air to form a sticky residue, which
might interfere with seal operation.
c. Cleaning to remove any accumulation which may develop at the low pressure
side of the seal faces.
Quenching liquid media shall be recommended by seal manufacturer. Quench should
be supplied at a low pressure of 0.5 to 0.7 kg/cm2 in order to avoid the leakage of
the same through throttle bush. Quench quantity should be approximately 0.3 to 0.5
m3/hr.
CAUTION:
Please refer to the cross-sectional drawing supplied for quenching recommendation if
any against order.
Throttle bush for mechanical seals:
This bush is pressed in the mechanical seal cover. This bush gives protection in case
of seal’s failure. Due to the close clearance between bush and shaft sleeve, if the seal
fails, the pressure of the product is reduced before it escapes. This bush is also
minimizes the quench leakage along the shaft. To avoid possibility of sparking, the
bush is made of non-ferrous material as per API 610 specification. This bush is
provided for single inside seals only.
Flushing at the seal face is necessary to provide lubrication, heating or cooling of the
seal faces and densing action. Pump should not run without flushing at the seal face
unless specifically recommended by seal manufacturer.
6. OVERHAULING:
PROCEDURE FOR DISMANTLING AND RE-ASSEMBLING.
While dismantling and re-assembling, the cross-sectional assembly drawing and
specification part list should be referred.
6.1 Dismantling:
Follow the following steps to dismantle the pump.
6.1.1 Isolate power supply of motor.
6.1.2 Shut off valves controlling flow to and from the pump.
6.1.3 Drain the liquid from the pump by removing the drain plug (601) or open the pump
casing drain cock.

IOM/CPHM/DEC19/01 ISSUE DATE:14-12-2019
Page 18 | 48 REVISION NO.1
6.1.4 Remove all auxiliary tubing and piping.
6.1.5 Drain the lubricating oil from bearing housing (240) and remove oil level indicator
(443) (in case of oil lubrication).
6.1.6 We recommend to match the punch mark of coupling halves.
6.1.7 In case of pump with spacer type flexible couplings, disconnect coupling (pump half
and motor half) from the coupling spacer (399) and remove coupling spacer.
Coupling spacer shall fall down. In case of ordinary flexible couplings, remove the
motor from the base.
6.1.8 Remove the support foot hold down bolts.
6.1.9 Adjust string or chain tension to support the weight of the back-pullout assembly for
higher size pump.
6.1.10 Remove hexagonal nuts from the casing studs holding the lantern bracket (248) to
pump casing (105) for unit 11 and unit 13. In case of unit 5, 7 & 9 remove
hexagonal nuts from studs holding bearing housing (240) to pump casing (105).
6.1.11 Screw the release bolts provided in the casing over. Turn the bolts evenly through a
quarter turn at both sides.
6.1.12 Slightly pullout the driving unit till impeller (151/153) clears the pump casing (105).
6.1.13 Place this rotating unit on a table or clear place for further dismantling.
6.1.14 Remove casing gasket (511).
6.1.15 Unscrew the impeller (151/153). Remove the gasket between impeller and shaft
sleeve (515) after taking out the impeller from pump shaft (180).
6.1.16 Removal of stuffing box with gland packing:
For this, following steps should be taken:
a) Remove the split gland (229) by taking out bolts used for clamping of the split
portions.
b) Take out the casing cover (220) along with throat bush (350), gland packing
(430) and lantern ring (227).
c) Unscrew the hex. socketed cap screw clamping throat bush (350) to the
casing cover (220) and remove the throat bush (350).
d) Remove the gland packing rings (430) and lantern ring (227).
e) Remove the shaft sleeve (311).
f) Remove the liquid deflector (236).
6.1.17 Removal of stuffing box with mechanical seal.
(NOTE THAT MECHANICA SEA ED CPHM PUMPS ARE SUPP IED UNDER SPECIFIC
ORDER ON Y).
Follow the steps given below:
a) Unscrew the hex. socketed cap screw clamping throat bush (350) to the

IOM/CPHM/DEC19/01 ISSUE DATE:14-12-2019
Page 19 | 48 REVISION NO.1
casing cover (220) and remove the throat bush (350).
b) Pull out the shaft sleeve under mechanical seal (315). Use the groove on the
shaft sleeve for pulling it out. Be careful while removing shaft sleeve since
sleeve comes out along with rotating unit of the mechanical seal.
c) Remove the mechanical seal from the shaft sleeve and keep it in a clean place.
d) Remove hex. nuts from casing cover (220) studs.
e) Take out the casing cover (220) along with mechanical seal cover taking care
of the mating ring face.
f) Unscrew the nuts of mechanical seal cover studs and remove mechanical seal
cover studs and mechanical seal cover (231) from casing cover (220).
6.1.18 oosen the grub screw holding the liquid deflector (236) incase of unit 11 and 13
pumps. Take out the liquid deflector (236).
6.1.19 Remove nuts holding lantern bracket (248) and bearing housing (240) for unit 11
and 13. In case of unit 4, 5, 7 and 9 remove nuts holding bearing cover (271) and
bearing housing (240).
6.1.20 Take out lantern bracket (248) for unit 11 and 13. In case of unit 4, 5, 7 and 9
take out bearing cover NDE.
6.1.21 Take out “O” ring (523) for bearing housing carefully.
7.1.22 Remove the pump half coupling (397) carefully, after unscrewing the grub screw.
CAUTION:
Coupling half should be removed with the help of suitable extraction device. To
avoid damage to the bearings, the coupling half should not be knocked off the
shaft.
6.1.23 Take out the coupling key (321).
6.1.24 oosen the hex. screws for bearing cover (NDE) (271). Remove carefully
the bearing cover (271) and packing (514).
6.1.25 Force the shaft (180) out carefully in the direction of the driving end. Shaft will
come out with bearings and bearing cartridge/bearing housing.
6.1.26 Remove the circlip (485), remove the bearing cartridge (241)/bearing housing with
the help of suitable puller.
6.1.27 Unlock the washer (415) and remove lock nut (336).
6.1.28 Take out the driving end double row angular contact ball bearing (263) with the
help of puller.
CAUTION:
Steps 7.1.28 to 7.1.30 are to be followed only if bearings are damaged and to be
replaced.
6.1.29 Take out outer race of roller bearing at NDE from bearing housing in case of
reinforced bearing arrangement.
6.1.30 Oil seal in the bearing cartridge/bearing housing should be removed if the seal
lips are worn out or spring has lost tension.