Dekker Vacuum Technologies, Inc. – DuraVane/12 4
The number and location of shims will be determined by the design of the baseplate. Firm support
should be provided at points where weight will be concentrated at the anchor bolt locations. Use
enough, and large enough shims to provide rigid support. Baseplates are usually designed with
openings to allow pouring grout. When the baseplate has been shimmed and leveled, and the anchor
bolts have been snugly tightened, a dam is constructed around the foundation to contain the grout.
The dam level should be at least ½ inch above the top surface of the shims. Grout should be poured
inside and around the outside of the base plate and leveled. Allow the grout to dry for a minimum of 48
hours before tightening the anchor bolts.
Please note that the pump/motor coupling and V-belt units will need to be realigned prior to
startup, except with monoblock units.
Ventilation
Locate the pump or system in an area with sufficient airflow and accessibility. To prevent excessive
ambient temperature rise, it is imperative to provide adequate ventilation. Cooling is an important
aspect of reliable equipment operation and it is therefore important to install the unit in a reasonably
cool area, where temperatures do not exceed 100
o
F (38
o
C). For higher ambient temperatures, contact
the factory.
Electrical Preparation
All system wiring is performed at the factory if a control panel is supplied. Check area classification to
ensure all electrical enclosures comply to code. Required customer wiring is minimal, but should be
done by a qualified electrician in compliance with OSHA, National Electric Code and applicable local
electric code concerning isolation switches, fused disconnects, etc. DEKKER includes a wiring diagram
in the control panel for use by the installer. DEKKER recommends that a main disconnect switch be
fitted between the vacuum pump or system and the incoming power.
After the electrical wiring connections are completed, check the incoming voltage to make sure that the
incoming voltage is the same as the pump or system voltage. Line voltage should be within the voltage
tolerance as specified on the motor. Check the unit for proper motor rotation. The direction of rotation
is marked by an arrow on the motor or pump housing. Jog the motor by pressing the START button,
then the STOP button. If the rotation is incorrect, switch any two of the three main power leads on the
contactor inside the control panel. Failure to do so could result in serious equipment damage.
WARNING: Install, ground and maintain equipment in accordance with the National Electric Code and all
applicable federal, state and local codes.
WARNING: For NFPA 99 hospital and generator applications, please shut down the vacuum pumps prior
to generator testing. The rapid stop and restart may cause damage to the pump and/or motor.
Pipe Connections and Sizing
Before installation, remove all protective inserts in the gas and liquid connections. Piping connected to
the unit must be installed without imposing any strain on the unit components. Improperly installed
piping can result in misalignment, general operating problems and pump failure. Use flexible
connectors where necessary. Piping must be cleaned of debris before installation.
The piping system has to be designed to ensure that no liquids such as condensate or liquid carried
over from the process can reach the pump. If this possibility exists, a knock-out liquid separator
should be installed. Consult the factory for recommendation.
Inlet Piping
Inlet piping should be at least the size of the pump inlet. Install the unit as close as possible to the
process to minimize losses due to the length of the suction line. If the unit has to be installed further
away from the process, be sure that the inlet piping is oversized accordingly to minimize the overall line
pressure drop. For more information consult your dealer or call the factory.
All DuraVane systems operating in parallel on a common manifold each have a manual or automatic
shut-off valve and a suitable check valve installed in the suction line close to the pump suction flange.
In addition DEKKER recommends installing an additional check valve suitable for vacuum service,
providing a minimum of resistance close to the pump suction flange to prevent backflow of process gas
and oil when the pump is stopped.
If the possibility exists that the inlet gas pumped contains dust or foreign particles, a suitable (10
micron or finer) inlet filter should be installed at the inlet port. It is good practice to install this
accessory at all times, as it will increase the life of the pump. All pumps are fitted with a stainless steel
inlet screen.
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