Electrical connections, Electrical connections (4.6), Protection systems (4.7) – Flowserve IDP CPXV User Manual

Page 15

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CPXV and CPXRV USER INSTRUCTIONS ENGLISH 71569193 09-14

Page 15 of 48

flowserve.com

4.5.4.3 Pumps fitted with heating jacket
As the pump is constructed as a heated jacketed unit,
steam must be connected to the steam inlet flange and
removed via the steam outlet flange.
These flanges are located on the upper side of the
sole plate. A flanged steam valve should be provided
at the steam inlet and outlet for control of the steam
supply.

4.5.5

Final checks

Check the tightness of all bolts in the suction and
discharge pipework. Check also the tightness of all
foundation bolts.

After connecting piping to the pump, rotate the shaft
several times by hand to ensure there is no binding
and all parts are free.

Recheck the flexible element coupling is aligned with
the permitted limits.

Where there is the option of an additional

rigid coupling below the thrust bearing, above the
mechanical seal: this has full metal-to-metal joints
which do not permit its adjustment.

For couplings with narrow flanges use a dial indicator
as shown. The alignment values are maximums for
continuous service.

P a r a l l e l

A n g u l a r

Permissible misalignment limits at working temperature:

Parallel alignment
-

0.25 mm (0.010 in.) TIR maximum

Angular alignment

- 0.3 mm (0.012 in.) TIR maximum for couplings

not exceeding 100 mm (4 in.) flange diameter

- 0.5 mm (0.020 in.) TIR maximum for couplings

over 100 mm (4 in.) diameter

Use the lower of the above values and values
indicated in the coupling manual


When checking parallel alignment, the total indicator
read-out (TIR) shown is twice the value of the actual
shaft displacement.

If alignment needs to be adjusted, a small amount of
adjustment of the motor is available within the motor
spigot but alignment is generally achieved
automatically on assembly. Larger motors always
require re-adjustment.

If it is not possible to achieve the alignment accuracy
defined, it may be an indication that the pump has not
been installed or handled correctly.

4.6 Electrical connections

Electrical connections must be made by

a qualified Electrician in accordance with relevant
local national and international regulations.

It is important to be aware of the EUROPEAN

DIRECTIVE on potentially explosive areas where
compliance with IEC60079-14 is an additional
requirement for making electrical connections.

It is important to be aware of the EUROPEAN

DIRECTIVE on electromagnetic compatibility when
wiring up and installing equipment on site. Attention
must be paid to ensure that the techniques used during
wiring/installation do not increase electromagnetic
emissions or decrease the electromagnetic immunity of
the equipment, wiring or any connected devices. If in
any doubt, contact Flowserve for advice.

The motor must be wired up in

accordance with the motor manufacturer's instructions
(normally supplied within the terminal box). Any
temperature, earth leakage, current or other appropriate
protective devices must be correctly installed and
monitored. The identification nameplate should be
checked to ensure the power supply is appropriate.

A device to provide emergency stopping must

be fitted. If not supplied pre-wired to the pump unit,
the controller/starter electrical details will also be
supplied within the controller/starter.

For electrical details on pump sets with controllers
see the separate wiring diagram.

See section 0, Direction of rotation,

before connecting the motor to the electrical supply.

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