installation &
operating instructions
Design Envelope 4302 ivs and 4382 ivs vertical
in-line pumping unit with integrated controls
6
“Bump” or energize the motor for a fraction of a second and
check that the rotation corresponds with the directional
arrow on the pump casing.
To reverse rotation of a three phase motor, interchange any
two power leads.
Start the pump with the discharge valve closed and the
suction valve open, then gradually open the discharge valve
when the motor is at operating speed. The discharge valve
may be “cracked” or open slightly at start up to help eliminate
trapped air.
When stopping the pump: Cl os e th e dis ch arg e v al ve a n d
de- energize the motor.
caution
Centrifugal pump rotation is generally “clockwise”
when viewing from the motor end. Check rotation
arrow prior to operating the unit.
2.1.7 general care
Vertical In-Line pumps are built to operate without periodic
maintenance. A systematic inspection made at regular inter-
vals, will ensure years of trouble-free operation, giving special
attention to the following;
• Keep unit clean
• Provide the motor with correctly sized overload protection
• Keep moisture, refuse, dust or other loose particles away
from the pump and ventilating openings of the motor.
• Avoid operating the unit in overheated surroundings
(above 100°f/40°c).
• If mechanical seal environmental accessories are installed,
ensure water is fl owing through the sight fl ow indicator and
that fi lter cartridges are replaced as recommended. (see fi le
43.85 & 43.86 for seal environmental instructions).
warning
Whenever any service work is to be performed on
pumping unit, disconnect power source to driver.
Any possibility of the unit starting while being
worked on, must be eliminated.
2.1.8 lubrication
Pump
Lubrication is not required. There are no bearings in the pump.
Motor
Follow the lubrication procedures recommended by the
motor manufacturer. Many small and medium sized motors
are permanently lubricated.
Check the lubrication instructions supplied with the motor for
the particular frame size indicated on the motor nameplate
Mechanical seal
The mechanical seal is fl ushed from discharge of the pump
casing on 4302 and towards the suction on 4382. Seal envi-
ronmental controls, installed in fl ush lines, such as fi lters and
separators, will prolong seal life in hvac systems.
Do not run the pump unless properly fi lled with water as the
mechanical seals need a fi lm of liquid between the faces for
proper operation. (For 4302 see fi le 43d.88 and for 4382 see
fi le 43d.81 for mechanical seal replacement instructions)
2.1.9 system cleanliness
Before starting the pump the system must be thoroughly
cleaned, fl ushed and drained and replenished with
clean liquid.
Welding slag and other foreign materials, “Stop Leak” and
cleaning compounds and improper or excessive water
treatment are all detrimental to the pump internals and
sealing arrangement.
Proper operation cannot be guaranteed if the above condi-
tions are not adhered to.
note:
Particular care must be taken to check the following before
the pump is put into operation:
a Pump primed?
b Alignment correct?
c Rotation ok?
d Lubrication ok?
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