www.fluidotech.com
INSTRUCTION
MANUAL
VECTRA GEAR PUMPS DGD AND DGM SERIES
Fluid-o-Tech Int’l Inc.
161 Atwater St.,
Plantsville CT (USA) 06479
Tel. +1 (860) 276 9270
Fax +1 (860) 620 0193
Fluid-o-Tech Int’l Inc. Japan
203, 2-17-19, Ebara, Shinagawa
Tokyo 142-0063, Japan
Tel. +81 (0) (3) 3783 9660
Fax +81 (0) (3) 3783 9661
Fluid-o-Tech Asia (Beijing) Co., Ltd
Jingwei Industrial Zone,
Beifang Huairou, Beijing, 101400, PRC
Tel. +86 (0) (10) 6168 4650
Fax +86 (0) (10) 6168 4651
Fluid-o-Tech srl
Via Leonardo da Vinci, 40
20094 Corsico, Milano, Italy
Tel. +39 02 9995 01
Fax +39 02 9995 0999
Please read the following instructions before conducting a
new installation.
The pumps of the DGD series are direct-drive
pumps, while those of the DGM series are magnetic-drive
pumps. The DGD and DGM units must be handled only by
specialised personnel who have the basic technical knowledge
related to hydraulic and electromechanical installations.
WARNINGS
The gear pumps part of the DGD and DGM series are
normally assembled with non-protected motors in case
of “locked rotor”. This is why we recommend inserting a
fuse and adequately sized components in the power supply
circuit to withstand this condition. Inadequate circuits and/or
components may overheat, causing damage and/or a fire.
Before connecting the motor is necessary to check the
polarity is correct. During installation be careful not to reverse
the polarity, in which case the pump would rotate in the
opposite direction and for some motors this could cause
permanent damage to the unit itself.
For the DGM version, the flange must be
handled carefully.
Do not handle it with tongs or vice that could
lead to a misalignment of the magnets and a
decline in the pump’s performance. In case
of continuous operation, the unit must be
installed in a ventilated
space to dissipate the heat generated by the motor.
In order to avoid noise and vibration of mechanical parts,
we recommend installing the unit with rubber anti-vibration
mounts. Take special care when connecting the pump to
the fittings in order to avoid potential leaks. The pipe holders
integrated in the DGD and DGM pumps are designed to be
coupled with silicone pipes (60ShA) with an internal diameter
measuring 6 mm and 1.5 mm thick.
Other types of pipe could damage the pump. The unit’s
pipe holders are not designed to withstand any mechanical
load. We recommend fastening at least the delivery pipe with
a plastic strap. We recommend removing the two plastic
plugs located in the pump’s intake and delivery ducts just
before mounting the fittings and pipes to prevent solid foreign
objects from entering inside, as they could damage the
internal components of the pump.
Do not use liquid sealant, as drops could fall in the ducts and
cause the pump to block.
For use in the food industry, the pumps (even if NSF-certified)
must first be sterilised by circulating water inside them at
a temperature of 80 °C/176 F for at least 20 minutes. The
water used for this operation must not be reused during the
sterilisation or thereafter, but must be flushed away. If the unit
is replaced, it is necessary to ensure that the model matches
the one being replaced. Change the unit with one with a
different flow rate could damage the system. The circuit must
be thoroughly cleaned and rinsed before starting up the unit.
INSTALLATION
MANUAL - DGD/DGM en. - 06/13 Ed.
Fluid-o-Tech reserves the right to alter the specifications indicated in this catalogue at any time and without prior notice.
GENERAL SAFETY ADVICE
1
The DGD and DGM pumps are often powered by DC motors
with brushes, a known source of ignition. Do not use these
motors in potentially explosive atmospheres.
2
After prolonged use or applications with hot fluids, the surfaces
of the pump and the motor could be hot and potentially cause
injury to skin or burns. After disconnecting the power supply,
wait for the pump to cool down before touching it.
3
Do not place the pump near materials with low auto-ignition
temperature/flammable materials. The outer surfaces of the
unit can reach high temperatures. Install the pump in a dry area
protected from dust, splashes and condensation.
4.
Often motors are cooled by natural convection. We recommend
installing the unit in areas where maximum and adequate
ventilation is ensured. As an indication, the minimum distance
from the walls around the unit should be at least 50 mm. Do not
wrap the unit with insulation material and do not install it near hot
surfaces. Do not use the pump in environments or with fluids at
temperatures higher than those reported in the catalogue.
5
Check the compatibility with the fluid used beforehand. Do not
use or allow the pump to come in contact with chemicals that
could damage the unit.
6
An inadequate circuit could cause excessive pressure or
overheating. Make sure the unit is used in accordance with to
the curves in the catalogue.
Install the hydraulic circuit with adequate safety margins, both in
terms of pressure and temperature.
CALL TOLL FREE 877-742-2878 FOR SALES AND SUPPORT
