Flowserve CPXV fitted with WW - Manual (Page 14)

CPXV - WW/CW USER INSTRUCTIONS ENGLISH 85392698 10-09
Page 14 of 36 flowserve.com
Double seals require a barrier liquid between the
seals, compatible with the pumped liquid.
With back-to-back double seals, the barrier liquid
should be at a minimum pressure of 1 bar (15 psi)
above the maximum pressure on the pump side of the
inner seal. The barrier liquid pressure must not
exceed limitations of the seal on the atmospheric side.
For toxic service the barrier liquid supply and
discharge must be handled safely and in line with
local legislation.
Special seals may require modification to auxiliary
piping described above. Consult Flowserve if unsure
of correct method or arrangement.
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 soleplate. 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 coupling is aligned within the permitted
limits. For couplings with narrow flanges use a dial
indicator as shown. The alignment values are
maximums for continuous service.
Parallel
Angular
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
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) including any temperature, earth leakage,
current and other protective devices as appropriate.
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 5.4, Direction of rotation
before connecting the motor to the electrical supply.