Argal ZMR Series Mounting instructions

USE MANUAL
Via Labirinto, 159
25125 BRESCIA - ITALY
CE
ZMR SERIES
IDENTIFICATION CODE
PUMP DATA
MOTOR DATA
range
model
execution
materia
l
O-ring
Mechanical seal
connections
rpm
motor
voltage/EEx
phases
powers
50Hz
60Hz
kW
HP
N
P
S
N
P
S
06.10
07.11
GFR-PP
FPM
SF1
BS7
BSP threaded
1450
IEC
senza motore
3 fasi
0.55
¾
N
P
S
N
P
S
N
10.10
07.14
CFF-E-CTFE
EPDM
SF2
BS8
NPT threaded
2900
NEMA
V std
1 fase
0.75
1
N
P
S
N
P
S
K
Z
S
ZMR
10.15
11.15
FFKM
TS5
MSF1
flange 40/32
ISO –ANSI –JIS
1740
V speciale
1.1
1½
N
P
S
N
P
CFF-E-CTFE
EEx
16.15
11.23
TS6
MSF2
Y
3500
1.5
2
N
P
S
N
Outside
structure
flange 40/040
ISO –ANSI –JIS
16.20
17.25
TS7
MTS5
2.2
3
N
P
S
N
integral
02.30
03.35
armoured
TS8
MTS6
3
5
BS5
MTS7
4
5
Atex chose
BS6
MTS8
1DISASSEMBLING SEQUENCE 2
1.1 LEGEND 3
2IDENTIFICATION CODES 4
3GENERAL NOTES 4
4OPERATING PRINCIPLE 5
5MOTOR 5
6PRESSURE SWITCH TO PREVENT DRY RUNNING 6
7INSTRUCTION ON INSTALLATION AND USE 6
7.1 TRANSPORT 6
7.2 INSTALLATION 6
7.3 START-UP 7
7.4 USE 8
7.5 SHUTDOWN 8
8MAINTENANCE 8
8.1 DISMANTLING 8
8.2 INSPECTION 9
8.3 ASSEMBLY 9
9SAFETY RISKS 10
9.1 INSTALLATION AND COMMISSIONING PERSONNEL 11
9.2 OPERATORS AND MAINTENANCE PERSONNEL 11
9.3 REPAIR PERSONNEL 11
9.4 WASTE DISPOSAL 11
10 IMPROPER USE 11
11 OPERATING FAULTS AND POSSIBLE CAUSES 11
12 TECHNICAL DATA 12
ATTACHMENT: GENERAL CONDITIONS OF SALE - EC DECLARATION
13 MANUFACTURER DATA 20
for MAINTENANCE
DEALER
date of commissioning ………………………………………………………..
position / system reference …………………………………………………….
Service ……………………………………………………………………………

2
1 DISASSEMBLING SEQUENCE

3
1.1 LEGEND
Pos.
Ref.
Part name
Material
Q.ty
Disassembling steps
sequence
Spare stock
1
2
3
4
5
6
7
8
9
0
Start
up
2
year
1
910.1
Connection volute casing / strainer
AISI 304
3
●
●
1.1
910.2
Connection volute casing / strainer
AISI 304
3
●
●
2
910.2
Connection volute casing / intermediate casing
AISI 304
6
●
●
2.1
910.3
Connection volute casing / intermediate casing
AISI 304
6
●
●
3
102
Volute casing
WR:PP / GF:E-CTFE / GX:E-CTFE
1
●
5
230
Impeller
WR:PP / GF:E-CTFE / GX:E-CTFE
1
●
●
●
7
260
Ogive
WR:PP / GF:E-CTFE / GX:E-CTFE
1
●
●
8
412.1
OR volute casing (OR 4675)
V:FKM / E:EPDM / K:FFKM
1
●
●
10
412.2
OR ogive (OR 3081)
V:FKM / E:EPDM / K:FFKM
1
●
●
11
210
Shaft
AISI 304
1
●
13
840
Cone coupling element
STEEL
1
●
14
910.3
Connection strainer / electric motor
AISI 304
4
●
14.A
910.3
Connection strainer / motor flange
AISI 304
4
●
15
807
Bracket
PPS
1
●
15.A
334
Motor flange
PPS
1
●
16
910.4
Connection electric motor / baseplate
AISI 304
4
●
17
800
Electric motor
///
1
●
18
890
Baseplate
AISI 304
1
●
34
722.1
Inlet flange
AISI 304
1
●
35
727.1
Inlet flange adaptor
PARA
2
●
36
722.2
Outlet flange
AISI 304
1
●
37
727.2
Outlet flange adaptor
PARA
2
●
38
912
Drain plug (optional)
PTFE
1
●
39
195.1
Armoured (connect. B –N)
AISI 304
1
●
40
922
Lock nut
PP
1
●
41
195.2
Armoured (connect.Y –Z)
AISI 304
1
●
42
932.1
Seeger ring
PP
1
●
43
185
Packing ring
PP
1
●
44
412.6
OR drain plug (OR 2050)
V:FKM / E:EPDM / K:FFKM
1
●
46
493
Dividing plate
PP
1
●
47
932.2
Seeger ring
STEEL
1
●
100
722.3
Outlet flange FF
PP
1
●
102
722.4
Inlet flange FF
PP
1
●
Mechanical seal
6
134.1
Intermediate casing
WR:PP / GF:E-CTFE / GX:E-CTFE
1
●
6.A
134.2
Intermediate casing (BS…)
WR:PP / GF:E-CTFE / GX:E-CTFE
1
●
20
412.3
OR fixed seal (OR 3200)
V:FKM / E:EPDM / K:FFKM
1
●
●
●
21
475.1
Fixed seal
TS5-TS6-SF1:Al2O3/ TS7-TS8-SF2:SSiC
1
●
●
●
23
922.1
Lock nut fixed seal
PP
1
●
●
●
24
472.1
Rotating seal (SF…)
PTFE
1
●
●
●
25
504.1
Spacer (SF…)
PP
1
●
25.A
504.2
Spacer (MSF…)
Bronze
1
●
26
472.2
Rotating seal (TS…)
TS5-TS7:CHD-GRAPHITE / TS6-TS8:SSiC
1
●
●
●
27
504.2
Spacer (TS…)
PP
1
●
27.A
504.4
Spacer (MTS…)
Bronze
1
●
30
472.3
Rotating seal
CHD-GRAPHITE
1
●
●
●
31
475.2
Fixed seal
Al2O3
1
●
●
●
48
164
Barrier
PVC
2
●
49
412.4
OR diaphragm (OR 3281)
V:FKM / E:EPDM / K:FFKM
1
●
●
●
50
443
Diaphragm
WR:PP / GF:PTFE / GX:PTFE
1
●
●
●
51
412.5
OR impeller (OR 3081)
FKM
1
●
●
52
412.7
OR seal chamber (OR 3375)
FKM
1
●
●
53
412.8
OR seal chamber (OR 3375)
FKM
1
●
●
54
471
Seal chamber
PP
1
●
55
761
Nipple
AISI 304
2
●
56
762
Fluxing connection
AISI 304
2
●
57
472.4
Rotating seal (BS…)
BS5-BS7:CHD-GRAPHITE / BS6-BS8:SSiC
1
●
●
●
58
475.3
Fixed seal (BS…)
BS5-BS6:Al2O3/ BS7-BS8:SSiC
1
●
●
●
59
412.9
OR diaphragm (OR 4337)
V:FKM / E:EPDM / K:FFKM
1
●
●
60
443.2
Diaphragm (BS…)
WR:PP / GF:PTFE / GX:PTFE
1
●
●
●
61
922.2
Lock nut fixed seal
PP
1
●
64
415.1
V-ring
NBR
1
●
●
65
414.1
Counterface V-ring
Al2O3
1
●

4
2 IDENTIFICATION CODES
Each pump is supplied with the serial and model abbreviation and the serial number on the rating plate, which is riveted onto
the support side. Check these data upon receiving the goods. Any discrepancy between the order and the delivery must be
communicated immediately.
In order to be able to trace data and information, the abbreviation, model and serial number of the pump must be
quoted in all correspondence.
3 GENERAL NOTES
"ZRM" pumps are designed and built for the transfer of liquid chemical products having a specific weight, viscosity, temperature
and stability of state appropriate for use with centrifugal pumps in a fixed installation, from a tank at a lower level to a tank or a
pipe to a higher level. The characteristics of the liquid (pressure, temperature, chemical reactivity, specific weight, viscosity,
vapour tension) and the ambient atmosphere must be compatible with the characteristics of the pump and are defined upon
ordering.
The pump's performance (capacity, head, rpm) is defined upon ordering and specified on the identification plate.
“ZMR” pumps are not self priming.
“ZMR” pumps cannot run dry.
The type of the solid particles contained in the pumped liquid depend on the mechanical seal; the presence of fibrous, adhesive
or abrasive bodies is not allowed.
Exame of the solid particles:
Mech.seal SF1-TS5
Mech.seal TS6
Mech.seal MSFA –MTSC - MTSD
max quantity in weight %
1 3
13 (a) - 15 (b)
1 11
max dimension in mm
0.1 0.6
0.10.6 (a) - 12 (b)
0.1 0.8
max hardness Mohs index
1 2
3 6
1 2
Clockwise rotation seen from the motor side.
Make sure that the chemical and physical characteristics of the liquid have been carefully evaluated for pump suitability.
The specific weight which can be pumped at a temperature of 25°C (both of the liquid and the ambient) depends upon the
diameter of the impeller (shown on the identification plate) and the installed motor power (shown on the motor plate) and has
to be defined upon ordering.
The level of kinematic viscosity must not exceed 20 cSt so as not to significantly modify the pump's performance. Higher values
up to a maximum of 250 cSt are possible provided that the pump is equipped with suitable impeller and motor to be defined
upon ordering.
The maximum continuous working temperature referred to water depends on the choice of materials (specified on the
identification plate): 80°C (176°F) version WR
110°C (230°F) version GF
variations may occur, depending on operating pressure
The ambient temperature interval is related to the choice of materials (specified on the identification plate):
0 ÷ 40 °C (14 ÷ 104 °F) version WR
-20 ÷ 40 °C (-4 ÷ 104 °F) version GF
SERIAL NUMBER
RANGE
MODEL

5
The maximum pressure the pump may be subjected to is 1.5 times the head value developed with the outlet closed.
The vapour pressure value of the liquid to be pumped must exceed (by at least 1m w.c) to the difference between the absolute
total head (suction side pressure added to the positive suction head, or subtracted by the suction lift) and the pressure drops
in the suction side piping (including the inlet NPSHr drops shown on the specific tables).
In case of double mechanical seal, the value of the pressure in the seal chamber must be less than 1/3 of the operating
pressure value of the pump.
In case of double mechanical seal, the flushing liquid must be clean and must not lead to violent chemical reactions on contact
with the liquid being pumped.
The pump does not include any non return valve nor any liquid flow control or motor stop device.
4 OPERATING PRINCIPLE
HYDRAULICALLY alike to all centrifugal pumps, it is equipped with a vane-type impeller rotating within a fixed housing. It has a
tangential outlet and, by creating a depression in the centre, it allows the liquid to flow from the central suction side. Then,
flowing through the impeller's blades, the fluid acquires energy and is conveyed towards the outlet.
-MECHANICALLY the impeller is driven directly by the shaft The axiality of the pump-motor assembly is guaranteed by the self-
centring coupling system jointing the pump shaft and the motor shaft; All the mechanical loads, of a reduced nature in this
type of pump, are borne by the motor bearings.
-THE MECHANICAL SEAL, placed at the point where the shaft enters the pump body to drive the impeller, is made up of two
main section: a fixed section inserted in the pump body and a rotating section integral with the shaft. The tight contact
between these two parts guarantees a seal against leakage whether the pump is rotating or not. The rubbing action that
occurs between these two parts when the pump is operating generates heat by friction; this heat is absorbed by the liquid
being pumped in the case of single mechanical seal and by the cooling liquid (generally water) in the case of double seal
(trim the inlet pressure between 0.3 and 1 bar - flow approx. 0,10,3 l/minute). The presence of the thin layer of liquid
between the sealing surfaces, as well as its cooling action, is indispensable for the life of the seal.
5 MOTOR
Electrical connections
The electrical connection to the motor terminal determines the direction of rotation of the motor and can be verified by looking at
the cooling fan at the rear of the motor ( for the Argal pump this has to rotate clockwise looking at the front end).
With single phase motors the direction of rotation may be reversed by changing the position of the connection plates:
With three-phase motors the direction of rotation may be changed by swapping any two of the three conductors independently
of the type of connection to the windings:
The windings of three-phase motors ( e.g. with (a) 230-400 V; (b) 400-600 V) require a delta-connection for lower voltage ( 230
volts for a ; 400 volts for b).
They require a star-connection for higher voltage (400 volts for a; 690 volts for b).
N
L
N
L
T
S
R
W
V
U
Z
Y
X
S
T
R
W
V
U
Z
Y
X
T
S
R
W
V
U
Z
Y
X
T
S
R
W
V
U
Z
Y
X

6
Star/Delta starting is used when the motor power is above 7.5 kW (10 HP ) only in case of frequent starts and short running
times, but always when the motor power is above 15kW (20 HP ). All this is also to safeguard the structure of the pump.
Protection level
The initials IP are followed by two numbers :
The first number indicates the level of protection against penetration of solid objects and in particular :
4 for solids whose dimension is greater than 1mm
5 for dust (eventual internal deposits will not harm operation)
6 for dust (no pentetration)
The second number indicates the protection against the penetration of liquids. In particular:
4 for water sprays from all directions
5 for jets of water from all directions
6 for tidal and sea waves.
According to the IP protection indicated on the identification plate of the motor and to the environmental conditions, arrange for
opportune extra protections allowing in any case correct ventilation and rapid drainage of rainwater.
6 PRESSURE SWITCH TO PREVENT DRY RUNNING
The principal cause of pump malfunctions is dry-running (being it caused by improper use or cavitation ). It is therefore
advisable to install a simple device that will stop the pump motor when the pressure falls below a preset level. This is justified
by the fact that such a condition is normally caused to an inadequate flooding of the impeller due to various causes: absence of
liquid, suction valves closed at start-up, cavitation, clogged channels, dirty filters, etc.....
The pressure switch (pressure gauge with electrical contacts) must be fitted on the discharge side of the pump at approximately
20cm from the outlet. This device needs furthermore:
1) ) A fluid separator to transmit pressure to the instrument via a secondary fluid separated from the main one by a chemically
resistant diaphragm.
2) Remote-control switch to energize the motor (controlled by a pushbutton or auxiliary relay) having the normally closed
contact of the pressure switch in series with the latch circuit of said remote-control switch.
In order to obviate any pulsations of the pressure switch, it is necessary to set its setpoint to a pressure value equal to 65% of
the working pressure. It is obvious that this device cannot be used to control working pressure.
On start-up the pressure switch contact must be by-passed for a sufficient time to allow pressure to build up in the system. In
case of automatic start-up it is necessary to short circuit the latch with a timer for the pressure build-up time.
The system is not suitable for full capacity applications in which case it is advisable to install some control devices for the motor
power absorbtion.
All of the above must be adapted to the local safety rules and in particular when the classification of the environment requires
explosion-proof equipment.
7 INSTRUCTION ON INSTALLATION AND USE
7.1 TRANSPORT
- cover the hydraulic connections
- when lifting the unit do not exert force on the plastic fittings
- lay the pump on its base or fixing plate during transport
- if the road is particularly rough, protect the pump by means of adequate shock absorbing supports
- bumps and shocks may damage important working parts vital for safety and functionality of the machine
7.2 INSTALLATION
- check that bolts and nuts are correctly screwed (cfr. 9.3 pag. 12 “Assembly” for the right bolts torque setting), thermoplastics
are dimensionally sensitive to sizeable temperature changes.
- clean the plant before connecting the pump
- make sure that no foreign bodies are left in the pump. Remove safety caps on the hydraulic connections.
- follow the instructions indicated in the following diagram:
1) Suction head varies according to flow in order to prevent windage (min. 0.5 m, max. 15% of pump head)
2) YES: expansion joint (indispensable with long pipes or hot liquids) and/or anti-vibration facility during discharge and
suction; anchored near to pump
3) YES: attachment for gauge or safety pressure switch
4) YES: check value (especially for long vertical or horizontal pipes; compulsory with parallel pumps).
5) YES: adjusting gate valve on outlet
6) speed of delivered fluid: 3.,5 m/s max. .
7) NO: elbow joints (and other parts) on the pump (discharge and suction lines)
8) YES: drainage channel around base

7
9) Fix the pump by the fixing holes provided: the supports must be level
10) YES: pipe discharge (completely sealed), discharge value shut during normal operations
11) YES: pipe fixing parts
12) YES: discharge collection well (does not leak)
13) Fluid speed suction: 2.5 m/s
14) NO: air pockets: the circuit must be short and straight
15) With positive head: tilt of piping towards pump
16) With negative suction lift: tilt of piping towards suction tank
17) YES: check vale (with negative suction lift)
18) YES: gate valve (may also be near pump in the case of long piping)
19) YES: line strainer (3-5 mm mesh)
20) YES: strainer (3-5 mm mesh)
21) Suction head, 3 m max.
22) Immersion depth: 0.3 m min.
YES: overcoming obstacles at lower depths.
(8xDN) mm
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
0,00
+y
- anchor the pump to an adequate base plate having a mass at least 5 times that of the pump
- do not use anti-vibration mounts to fix the pump
- anti-vibration joints are recommended on the pipe connections
- manually verify that all rotating parts are free to turn without abnormal friction by turning the motor cooling fan
- make sure that the power supply is compatible with the data shown on the pump motor identification plate
- connect the motor to the power supply via a magnetic/thermal control switch
- ensure that star-delta starting is implemented for motors whose power is more than 15kW
- install emergency stop devices to switch off the pump in case of low liquid level (floating, magnetic, electronic, pressure-
sensitive)
- ambient temperature as a function of the physical-chemical characteristics of the liquid to be pumped and in any case not
greater or lower than the interval indicated in the GENERAL HINTS
- other environmental conditions in accordance with the IP protection of the motor
- install a drainage pit to collect any liquid overflow from the base drainage channel due to normal maintenance work
- leave enough free space around the pump for a person to move
- leave free space above the pump for lifting operations
- highlight the presence of aggressive liquids with coloured tags following the local safety regulations
- do not install the pump (made in thermoplastic material) in close proximity to heating apparatus
- do not install the pump in areas subject to solid or liquid matter falling
- do not install the pump in an explosive atmosphere unless the motor and its coupling have been adequately pre-arranged
- do not install the pump in close proximity to workplaces or crowded areas
-install extra protection guards for the pump or persons as the need arises
-install a spare equivalent pump in parallel
7.3 START-UP
-verify that the instructions outlined in the INSTALLATION have been followed
-verify that fixing elements (screws and bolts) are closed (see bolt torque on page)
-verify the correct direction of rotation (clockwise from the motor side) supplying the motor with short impulses
-ensure that the NPSH available is greater than that required by the pump (in particular for hot liquids, liquids with high vapour
pressure, very long suction pipes or negative suction lift)
-close the discharge valve; completely cover the suction pipe and the pump.
-close the outlet valve. Start up the motor two or three times with short supplies of current in order to expel the air from the
pump and the lubrication circuit between the guide shaft and bush.
-start the pump with the suction valve completely open and the outlet valve semi-closed.
-slowly adjust the flow by adjusting the outlet valve (never adjust the suction valve) and making sure that the motor absorption
is does not exceed the nominal power rating shown on the plate

8
-do not operate at the extremes of the operating curve: maximum head (discharge valve shut too tight) or maximum flow (total
absence of loss and lift in discharge circuit).
-set the operating point for which the pump has been requested
-check that there are no unusual vibrations or noises due to inadequate fixing or cavitation
avoid excessively short and/or frequent start-ups by adjusting the consent appliances
Motor power ; kW
0,75÷5,5
Max. no. starts/hour ; 2-4 poles
20 - 40
- check that temperature, pressure and characteristics of liquid match order specifications
7.4 USE
-switch automatic control on
-do not activate valves whilst the pump is in operation
-risks of dangerous water hammer effects in case of sudden or improper valve actuation (only trained personnel should
operate valves)
-completely empty and wash the pump before using a different liquid
-isolate or empty the pump if the crystallization temperature of the liquid is the same or lower than the ambient temperature
-stop the pump if the liquid temperature exceeds the maximum allowed temperature indicated in the general notes; if the
increase is of approximately 20%, check internal parts
-close the valves in case of leaks
-wash with water only if compatible from the chemical point of view. As alternative use an appropriate solvent that will not
generate dangerous exothermal reactions
-contact the liquid supplier for information on the appropriate fire precautions
-empty the pump in case of long periods of inactivity (in particular with liquids which would easily crystallize)
7.5 SHUTDOWN
-disconnect the motor
-before starting maintenance, turn off the suction and discharge valves
8 MAINTENANCE
-all these maintenance operations must be performed under the supervision of qualified personnel
-make periodic inspections (2 to 6 months depending on the type of liquid and the operating conditions) on the rotating parts
of the pump; clean or replace as necessary
-make periodic inspections (3 to 5 months depending on the type of liquid and the operating conditions) on the functionality of
the motor control system; efficiency must be guaranteed
-make periodic inspections (2 to 30 days depending on the type of liquid and the operating conditions) of the in- line and foot
filters as well as of the bottom valve
-the presence of liquid below the pump could be a clue to pump problems
-excessive current consumption could be an indication of impeller problems
-unusual vibrations could be due to unbalanced impeller (due to damage or presence of foreign material obstructing its
blades)
-reduced pump performance could be due to an obstruction of the impeller or damages to the motor
-motor damages could be due to abnormal friction within the pump
-damaged parts must be replaced with new original parts
the replacement of damaged parts must be carried out in a clean dry area
8.1 DISMANTLING
Tools required: Open end wrenches CH6 , CH10 , CH13 , CH17 , CH19, Hex key wrench CH6, Phillips screw driver
Right handed nuts and bolts
- all these maintenance operations must be performed under supervision of qualified personnel
- cut off the power supply from the motor and disconnect the electrical wiring; pull the wires out from the terminal
box and isolate their extremities accordingly
- close the suction and discharge valves and open the drain valve
- use gloves, safety glasses and acid-proof overalls when disconnecting and washing the pump
- disconnect the piping and leave enough time for the residual liquid to exit the pump body and atmospheric air to
fill the empty volume
- wash the pump before carrying out any maintenance work
- do not scatter the liquid in the environment
- before attempting to dismantle the pump ensure that its motor is disconnected and that it may not be started
accidentally
- before the inspection, check that you have spare O-rings ready to hand for re-installing at the end of operations

9
-proceed with opening of the pump according to sequence described on paragraph no. 1.1 in the column of the LEGEND
-the access to the mech. Seal is possible only after dismantling of the impeller (remove ogive and take the impeller off)
:removing the rotating part of the mechanical seal from the impeller you can reach the fixed part of the seal.
the motor can be separated from strainer unscrewing the 4 bolts that fix the strainer itself to it ; than open the cone coupling
by friction and take off the shaft of the pump from motor shaft.
8.2 INSPECTION
Check:
-excessive wear of seal rings
-counterthrust bushing for cracks or excessive wear
-for lumps and clusters created by the pumped liquid (especially at the bottom of the rear chamber)
-the impeller, volute and intermediate disk for abrasion and corrosion
-for infiltration of liquid outside the seal in the support
Replace broken, cracked or deformed parts.
Reopen all the blocked pipes and eliminate any chemical agglomeration.
Clean all surfaces before reassembly; in particular seal rings (risk of leakage or premature wear) and O-ring seats (risk of
leakage).
8.3 ASSEMBLY
Tools required: No.6 socket spanner, No.10 socket spanner, No.13 socket spanner, No.17 socket spanner, No.19 socket
spanner, screw driver CH6(Hex drive type), screw driver (Phillips drive type). The nuts and bolts have a right-hand thread
Bolt torque setting:
M4
M6
M8
M10
M12
M16
M20
M24
(reduce by 25% on plastic parts) Nm
4
14
24
48
60
75
120
175
- all the tasks must be performed under supervision of qualified personnel
- seal with new o-rings
- assemble the pump by following the procedure set out in the LEGEND column in the
reverse order
- clean out the motor shaft from any trace of dust and/or grease
-mount the pump shaft (pos.11) complete with cone capling element (pos.13) and
seager ring (pos.47) –fig.8.1
-Lock up the screws of cone capling element to block off the pump shaft to the motor
-Assemble the strainer (pos.15) together with the motor flange (pos. 15.A)
-Install the strainer assembly (strainer + flange) on the motor taking care to place the
components as indicated in fig. 8.2
Installation of mechanical seals SF.. –TS..
Assemble the parts in the following order ( fig. 8.3 )
1) Dividing plate (pos. 46 )
2) Spacer ( pos. 25 or pos. 27 )
3) O ring Impeller ( pos. 51 ) , care for installation in the foreseen round
slot in the spacer.
Installation of mechanical seals MSF.. –MTS.. ( fig. 8.3 )
1) Insert the fixed seal ring ( pos. 31 ) in the foreseen dividing plate slot
( pos. 46 )
2) Assemble the rotating seal ( pos. 30 ) and the spacer pos. ( 25 )
3) Position the dividing plate complete with the fix seal in the strainer.
4) Install on the shaft the spacer complete with rotating seal
5) Assemble the o ring impeller ( pos. 51 ) in the slot of the spacer.
Position the mechanical seal chamber ( pos. 54 ) complete with O rings ( pos
52, pos. 53 ) and nipples ( pos. 55 ) and fluxing connection
Fig.8.1
Fig.8.2
Fig.8.3
Fig.8.4

10
Fit in the intermediate casing ( pos.6 ) the diaphragm ( pos.50 ) and the fixed
seal ( pos. 21 ) with relevant O rings ( pos. 20 –pos. 49 ) and pack all the
parts by locking the lock nut fixed seal
Insert the rear side of the impeller in the intermediate casing and then fit on it (
fig. 8.5 )
-the seal ( rotating seal pos. 24 or pos. 26 )
assemble the complete intermediate casing ( inclusive of barrier pos. 48 if
present –fig. 8.6 ) on the shaft (pos. 11 ) previously locked on the electric
motor shaft.
-WARNING ! Rotate the impeller until the correct assembly position is found
and lock the group with the ogive ( pos. 7 –locking torque 24 Nm ) ( fig. 8.7 )
-Should the seal installed be SF1 , set the pump vertical and lock the nut fixed
seal through the opening of the intermediate casing placed in the lower side
of the pump deprived of the barrier.
Should the seal installed be type MSFA , remove one of the two fluxing connection ( pos. 56 ) to reach and screw
with the key wrench the two hexagonal socket on the mechanical lock nut fixed seal ( fig. 8.8 )
-Complete the assembly positioning the O ring ( pos. 8 ) and the volute casing ( pos. 3 )
9 SAFETY RISKS
WARNING! CHEMICAL HAZARD.
The pumps are designed to pump different types of liquid and chemical. Follow the specific instructions to
decontaminate during inspection or maintenance
WARNING!
Safety risks for personnel mainly arise from improper use or accidental damages.
These risks may be of an electrical nature as far as the non-synchronous motor is concerned and may cause
injury to hands if working on an open pump. Risks may also arise due to the nature of the liquids pumped. It is
therefore of utmost importance to closely follow all the instructions contained in this manual so as to eliminate
the causes that may lead to pump failure and the consequent leakage of liquid dangerous for both personnel
and the environment.
In any case five general rules are important:
A - all services must be carried out by specialised personnel or supervised by qualified personnel depending on the type of
maintenance required
B - install protection guards against eventual liquid sprays (when the pump is not installed in remote areas) due to an accidental
pipe rupture. Arrange for safety basins to collect possible leakage
C - when working on the pump always wear acid-proof protective clothing
D - arrange for proper conditions for suction and discharge valve closing during disassembly
E - make sure that the motor is completely disconnected during disassembly.
Proper design and building of the plants, with well positioned and well marked piping fitted with shut-off valves, adequate
passages and work areas for maintenance and inspections are extremely important (since the pressure developed by the
pump could give some kind of damage to the plant in case this one should be faulty made or wear and tear-damaged).
It must be stressed that the major cause of pump failures leading to a consequent need to intervene is due to the pump running
dry in manually operated plants. This is generally due to:
Fig.8.5
Fig.8.7
Fig.8.8
Fig.8.6
Fig.8.5

11
-the suction valve being open at start-up or
the suction tank being emptied without stopping
9.1 INSTALLATION AND COMMISSIONING PERSONNEL
Interventions allowed only to specialised personnel who may eventually delegate to others some operations depending on
specific evaluations (technical capability required: specialisation in industrial plumbing or electric systems as needed).
9.2 OPERATORS AND MAINTENANCE PERSONNEL
Interventions allowed to general operators (after training on the correct use of the plant):
-pump starting and stopping
-opening and closing of valves with the pump at rest
-emptying and washing of the pump body via special valves and piping
-cleaning of filtering elements
Interventions allowed to qualified personnel (technical capacities required: general knowledge of the mechanical, electrical and
chemical features of the plant being fed by the pump and of the pump itself):
-verification of environmental conditions
-verification of the condition of the liquid being pumped
-inspections of the control/stop devices of the pump
-inspections of the rotating parts of the pump
trouble shooting
9.3 REPAIR PERSONNEL
Interventions allowed to general operators under the supervision of qualified personnel:
-stopping of the pump
-closing of the valve
-emptying of pump body
-disconnection of piping from fittings
-removal of anchoring bolts
-washing with water or suitable solvent as needed
-transport (after removal of electrical connections by qualified personnel)
Interventions by qualified personnel (technical capacities required: general knowledge of machining operations, awareness of
possible damage to parts due to abrasion or shocks during handling, know-how of required bolt and screw tightening
required on different materials such as plastics and metals, use of precision measuring instruments):
-opening and closing of the pump body
-removal and replacement of rotating parts
9.4 WASTE DISPOSAL
Materials: separate plastic from metal parts. Dispose of by authorized companies.
10 IMPROPER USE
The pump must not be used for purposes other than the transfer of liquids.
The pump cannot be used to generate isostatic or counter pressures.
The pump cannot be used to mix liquids generating an exothermal reaction
The pump must be installed horizontally on a firm base.
The pump must be installed on a suitable hydraulic plant with inlet and outlet connections to proper suction and discharge
pipes.
The plant must be able to shut off the liquid flow independently from the pump.
Handling of aggressive liquids requires specific technical knowledge
11 OPERATING FAULTS AND POSSIBLE CAUSES
The pump does not deliver:
1. rotates in wrong direction
2. suction pipe is excessively long and tortuous
3. insufficient geodetic pump head or excessive suction geodetic lift
4. air infiltration into the suction pipe or branches
5. pump or suction pipe not completely covered by liquid
6. impeller channels blocked by impurities
7. check valve on discharge pipe jammed
8. geodetic system height is greater than maximum potential pump head
9. impeller jammed by considerable layer of crystals or by melting of materials for dry rotation.
10.bottom valve blocked by mud or other debris
11.bottom valve insufficiently immersed
12.bottom valve faulty, thereby causing suction valve to empty when pump stops
Pump discharge rate or pressure insufficient: see 01, 02, 03, 04, 05, 06, 10, 11, 12

12
14.system's resisting head is greater than expected
15.suction pipe, closing valve and other items have an insufficient nominal diameter
16.small geometric pump suction head
17.damaged or worn impeller
18.liquid viscosity greater than expected
19.excessive quantities of air or gas in liquid
20.elbow joints, check valves or other items on the outlet port
21.liquid (especially if hot) with tendency to change into gaseous state
Pump absorbs too much power: see 17
22.pump operates at greater capacity than expected
23.specific weight of liquid is greater than expected
24.impurities inside pump create abnormal wear
25.electric motor supply voltage is not rated voltage
Pump vibrates and is noisy: see 23
26.operates at full capacity (no head)
27.pump or pipes inadequately fixed
28.eccentric impeller operation because of worn bushes
28.support bearing without grease
Pump's internal parts wear out too quickly : see 23
29.liquid excessively abrasive
30.recurring cavitation problems (see. 02, 14, 18, 16)
31.high tendency of liquid to crystallise or polymerise when pump is not operating.
32.pump made of materials that are unsuitable for pumped liquid
33.operation with capacity too reduced
12 TECHNICAL DATA

13
MOTOR IEC - 50 Hz
Modello ZMR
06.10
10.10
10.15
16.15
16.20
02.30
IEC frame
71
80A
80B
80A
80B
90S
80B
90S
90L
90S
90L
100
90L
100
112
90L
100
112
a1
67
67
67
67
67
67
L
364
393
393
413
393
413
438
413
438
486
438
486
495
438
486
495
Q
75
75
75
75
75
75
h1
71
80
80
90
80
90
90
100
90
100
112
90
100
112
h2
130
130
130
130
130
130
r
202
207
207
213
207
213
213
235
213
235
242
213
235
242
r1
157
157
157
157
172
157
172
157
172
rb
169
169
169
169
184
169
184
169
184
m1
90
100
100
100
125
100
125
140
125
140
125
140
n1
112
125
125
140
125
140
140
160
140
160
190
140
160
190
s1
7
8
8
8
8
10
8
10
8
10
g
106
110
110
142
110
142
142
155
142
155
168
142
155
168
L3
185
185
185
185
205
185
205
185
205
B2
248
248
248
248
305
248
305
248
305
S2
14
14
14
14
14
14
L1
245
245
245
245
259
245
259
245
259
B3
308
308
308
308
359
308
359
308
359
h3
40
40
40
40
40
40
KM (ISO) (*)
100
100
100
100
100
100
KA (ISO)
110
110
110
110
110
110
KM (ANSI) (*)
89
89
89
89
89
89
KA (ANSI)
98
98
98
98
98
98
KM (JIS) (*)
100
100
100
100
100
100
KA (JIS)
105
105
105
105
105
105
d x z (ISO)
18 x 4
18 x 4
18 x 4
18 x 4
18 x 4
18 x 4
d x z (ANSI)
16 x 4
16 x 4
16 x 4
16 x 4
16 x 4
16 x 4
d x z (JIS)
19 x 4
19 x 4
19 x 4
19 x 4
19 x 4
19 x 4
(Dimensions in mm)
(*) for connections type “Y” (see pag.1 “IDENTIFICATION CODE ) KM = KA
MOTOR IEC - 60 Hz
Model ZMR
07.11
07.14
11.15
11.23
17.25
03.35
IEC frame
80A
80B
90S
80B
90S
90L
90S
90L
100
90L
100
112
112
a1
67
67
67
67
67
67
L
393
413
393
413
438
413
438
486
438
486
495
495
Q
75
75
75
75
75
75
h1
80
90
80
90
90
100
90
100
112
112
h2
130
130
130
130
130
130
r
207
213
207
213
213
235
213
235
242
242
r1
157
157
157
172
157
172
172
172
rb
169
169
169
184
169
184
184
184
m1
100
100
125
100
125
140
125
140
140
140
n1
125
140
125
140
140
160
140
160
190
190
s1
8
8
8
10
8
10
10
10
g
110
142
110
142
142
155
142
155
168
168
L3
185
185
185
205
185
205
205
205
B2
248
248
248
305
248
305
305
305
S2
14
14
14
14
14
14
L1
245
245
245
259
245
259
259
259
B3
308
308
308
359
308
359
359
359
h3
40
40
40
40
40
40
KM (ISO) (*)
100
100
100
100
100
100
KA (ISO)
110
110
110
110
110
110
KM (ANSI) (*)
89
89
89
89
89
89
KA (ANSI)
98
98
98
98
98
98
KM (JIS) (*)
100
100
100
100
100
100
KA (JIS)
105
105
105
105
105
105
d x z (ISO)
18 x 4
18 x 4
18 x 4
18X4
18 x 4
18 x 4
d x z (ANSI)
16 x 4
16 x 4
16 x 4
16X4
16 x 4
16 x 4
d x z (JIS)
19 x 4
19 x 4
19 x 4
19 x 4
19 x 4
19 x 4
(Dimensions in mm)
(*) for connections type “Y” (see pag.1 “IDENTIFICATION CODE ) KM = KA

14
MOTOR NEMA - 60 Hz
Model ZMR
07.11
07.14
11.15
11.23
17.25
03.35
NEMA frame
56
145
143
145
182
145
182
184
182
184
184
184
a1
2 21/32
2 21/32
2 21/32
2 21/32
2 21/32
2 21/32
L
15 ½
17 ¼
16 ¼
17 ¼
18
13/16
17 ¼
18
13/16
19
13/16
18 13/16
19 13/16
19 13/16
19 13/16
Q
2 15/16
2 15/16
2 15/16
2 15/16
2 15/16
2 15/16
h1
3 ½
3 1/2
4 1/2
3 1/2
4 1/2
4 1/2
4 ½
4 ½
h2
5 1/8
5 1/8
5 1/8
5 1/8
5 1/8
5 1/8
r
8 3/4
8 7/16
8 7/16
9
11/16
8
7/16
9 11/16
911/16
9 15/16
9 15/16
r1
6 3/16
6 3/16
6
15/16
6
3/16
6 15/16
6 15/16
6 15/16
6 15/16
rb
6 21/32
6 21/32
7
7/16
6
21/32
7 7/16
7 7/16
7 7/16
7 7/16
m1
3
5
4
5
4 1/2
5
4 1/2
5 1/2
4 1/2
5 1/2
5 ½
5 ½
n1
4 7/8
5 ½
5 1/2
7 1/2
5 1/2
7 1/2
7 1/2
7 ½
7 ½
s1
3/8
3/8
13/32
3/8
13/32
13/32
13/32
13/32
g
5 7/16
5 29/32
5 29/32
7
1/32
5
29/32
7 1/32
7 1/32
7 1/32
7 1/32
L3
7 9/32
7 9/32
8
1/16
7
9/32
8 1/16
8 1/16
8 1/16
8 1/16
B2
9 ¾
9 3/4
12
9 3/4
12
12
12
12
s2
9/16
9/16
9/16
9/16
9/16
9/16
L1
9 21/32
9 21/32
10
3/16
9
21/32
10 3/16
10 3/16
10 3/16
10 3/16
B3
12 1/8
12 1/8
14
1/8
12
1/8
14 1/8
14 1/8
14 1/8
14 1/8
h3
1 9/16
1 9/16
1 9/16
1 9/16
1 9/16
1 9/16
KM (ISO) (*)
3 15/16
3 15/16
3 15/16
3 15/16
3 15/16
3 15/16
KA (ISO)
4 11/32
4 11/32
4 11/32
4 11/32
4 11/32
4 11/32
KM (ANSI) (*)
3 ½
3 1/2
3 1/2
3 1/2
3 ½
3 ½
KA (ANSI)
3 7/8
3 7/8
3 7/8
3 7/8
3 7/8
3 7/8
KM (JIS) (*)
3 15/16
3 15/16
3 15/16
3 15/16
3 15/16
3 15/16
KA (JIS)
4 1/8
4 1/8
4 1/8
4 1/8
4 1/8
4 1/8
d x z (ISO)
3/4 x 4
3/4 x 4
3/4 x 4
3/4 x 4
3/4 x 4
¾ x 4
d x z (ANSI)
5/8 x 4
5/8 x 4
5/8 x 4
5/8 x 4
5/8 x 4
5/8 x 4
d x z (JIS)
3/4 x 4
3/4 x 4
3/4 x 4
3/4 x 4
3/4 x 4
3/4x 4
(Dimensions in inches)
(*) for connections type “Y” (see pag.1 “IDENTIFICATION CODE ) KM = KA

15
ZMR
50 Hz
06.10
10.10
10.15
16.15
16.20
02.30
60 Hz
07.11
07.14
11.15
11.23
17.25
03.35
Ø inlet
BSP –NPT
1 ½”
1 ½”
1 ½”
1 ½”
1 ½”
1 ½”
Ø outlet
BSP –NPT
1 ¼”
1 ¼”
1 ¼”
1 ¼”
1 ¼”
1 ¼”
Flange ISO–ANSI–JIS
DNA *
40 - 1 ½”
40 - 1 ½”
40 - 1 ½”
40 - 1 ½”
40 - 1 ½”
40 - 1 ½”
DNM *
32 - 1 ¼”
32 - 1 ¼”
32 - 1 ¼”
32 - 1 ¼”
32 - 1 ¼”
32 - 1 ¼”
Pump
Model
06.10
10.10
10.15
16.15
16.20
03.20
Version
N
P
S
N
P
S
N
P
S
N
P
S
N
P
S
N
P
S
WR
GF
WR
GF
WR
GF
WR
GF
WR
GF
WR
GF
WR
GF
WR
GF
WR
GF
WR
GF
WR
GF
WR
GF
WR
GF
WR
GF
WR
GF
WR
GF
WR
GF
WR
GF
power (IEC) 50 Hz
KW
0.55
0.75
1.1
0.75
1.1
1.5
1.1
1.5
2.2
1.5
2.2
3
2.2
3
4
2.2
3
4
Motor frame
IEC
71
80A
80B
80A
80B
90S
80B
90S
90L
90S
90L
100L
90L
100L
4
90L
100L
4
Pump
weight
No motor
Kg
3
4
3
4
3
4
3
4
3
4
3
4
3
4
3
4
3
4
3
4
3
4
3
4
3
4
3
4
3
4
3
4
3
4
3
4
IEC
3P
Kg
10
11
11
12
13
14
11
12
13
14
16
17
13
14
16
17
20
21
16
17
20
21
25
26
20
21
25
26
34
35
20
21
25
26
34
35
E-exd
Kg
18
19
23
24
23
24
23
24
23
24
33
34
23
24
33
34
34
35
33
34
34
35
44
45
34
35
44
45
54
55
34
35
44
45
54
55
1 P
Kg
12
13
14
15
17
18
14
15
17
18
20
21
17
18
20
21
27
28
20
21
27
28
//
//
27
28
//
//
//
//
27
28
//
//
//
//
noise
dB
65
70
70
70
70
70
Max. Head
M
11
14,5
18
23.5
26.5
31
Max. Capacity
m3/h
17
19
25
26
30
8
Max. NPSH req.
mc.l
Pump
Model
07.11
07.14
11.15
11.23
17.25
03.35
Version
N
P
S
N
P
S
N
P
S
N
P
S
N
P
S
N
P
S
WR
GF
WR
GF
WR
GF
WR
GF
WR
GF
WR
GF
WR
GF
WR
GF
WR
GF
WR
GF
WR
GF
WR
GF
WR
GF
WR
GF
WR
GF
WR
GF
WR
GF
WR
GF
Power (IEC) 60 Hz
KW
0.75
1.1
1.5
1.1
1.5
2.2
1.5
2.2
3
2.2
3
//
4
//
//
4
//
//
Motor frame
IEC
80A
80B
90S
80B
90S
90L
90S
90L
100L
90L
100L
//
112
//
//
112
//
//
power (NEMA) 60 Hz
HP
1
1 1/2
2
1 1/2
2
3
2
3
5
3
5
//
5
//
//
5
//
//
Motor frame
NEMA
56
56
145
143
145
182
145
182
184
182
184
//
184
//
//
184
//
//
Pump weight
No motor
Kg
3
4
3
4
3
4
3
4
3
4
3
4
3
4
3
4
3
4
3
4
3
4
3
4
3
4
3
4
3
4
3
4
3
4
3
4
Lb
6.7
8.9
6.7
8.9
6.7
8.9
6.7
8.9
6.7
8.9
6.7
8.9
6.7
8.9
6.7
8.9
6.7
8.9
6.7
8.9
6.7
8.9
6.7
8.9
6.7
8.9
6.7
8.9
6.7
8.9
6.7
8.9
6.7
8.9
6.7
8.9
IEC
3P
Kg
11
12
13
14
16
17
13
14
16
17
20
21
16
17
20
21
25
26
20
21
25
26
//
//
34
35
//
//
//
//
34
35
//
//
//
//
E-exd
Kg
23
24
23
24
33
34
23
24
33
34
34
35
33
34
34
35
44
45
34
35
44
45
//
//
54
55
//
//
//
//
54
55
//
//
//
//
Monofase
Kg
14
15
17
18
20
21
17
18
20
21
27
28
20
21
27
28
//
//
27
28
//
//
//
//
//
//
//
//
//
//
//
//
//
//
//
//
NEMA
3F
Lb
33
35
35
38
48
50
44
46
48
50
86
88
48
50
86
88
91
94
86
88
91
94
//
//
91
94
//
//
//
//
91
94
//
//
//
//
E-exd
Lb
33
35
35
38
48
50
44
46
48
50
86
88
48
50
86
88
91
94
86
88
91
94
//
//
91
94
//
//
//
//
91
94
//
//
//
//
1 P
Lb
37
39
42
44
73
76
66
69
73
76
106
109
73
76
106
109
//
//
109
109
//
//
//
//
//
//
//
//
//
//
//
//
//
//
//
//
noise
dB
70
70
70
70
74
74
Max. Head
m
15.5
16.5
22
28
36
35
Max. Capacity
m3/h
15
19.5
24
27
30
10
Max. NPSH req.
mc.l
phase
N.
Trifase (tutti i modelli) –Monofase (< 3kW)
voltage Std. IEC
V
400 5% 50 Hz
voltage Std. NEMA
V
460 5% 60 Hz
protection
IP
55
Loads (ports-section)
Kg
Max. single strength value F(x,y,z) = 2,5
Dynamic loads (base)
Kg
6,5
11
(*) for connections type “Y” (see pag.1 “IDENTIFICATION CODE ) DnM = DnA
Dimensions in mm
Weight and loads in kg
Centre of gravity along the motor axis, in the middle of dimension -L-

16

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13 MANUFACTURER DATA
Production head and legal office:
Via Labirinto, 159 I - 25125 BRESCIA
Tel: [phone] Fax: [phone]
Administration
Tel: [phone]
Export manager
Tel: [phone]
Customer service
Tel: [phone]
Web
www.argal.it
E-mail
[email protected]
The INSTRUCTION MANUAL must be delivered to the pump-user, who takes diligent note
of it, fills in data for Maintenance Department (page 1), keeps the file for subsequent
reference. Possible modifications do not imply updating of the existing manuals
© Copyright 2018 –ARGAL S.r.l
Draw and text total or partial
duplication is prohibited
REV. 10 / 10.2018