Upgrade Kits for Plunger Pumps User Manual
4
Version 110112
Pumptec Operang Instrucons and Parts Manual
UPGRADE KITS
• Line size must be a minimum of one size larger than the pump
inlet ng. Avoid tees, 90-degree elbows or valves in the
inlet line of the pump to reduce the risk of ow restricon
and cavitaons.
• The line MUST be a FLEXIBLE hose, NOT a rigid pipe, and
reinforced on SUCTION systems to avoid collapsing.
• The simpler the inlet plumbing the less the potenal for
problems. Keep the length to a minimum, the number of
elbows and joints to a minimum (ideally no elbows) and the
inlet accessories to a minimum.
• Use pipe sealant to assure airght, posive sealing pipe
joints.
should fall within the specicaons of
the pump.
• High RPM, high temperatures, low vapor pressures or high
viscosity may increase acceleraon loss of liquids.
• Opmum pump performance is obtained with +20 PSI (1.4
BAR) inlet pressure. With adequate inlet plumbing, most
pumps will perform with ooded sucon.
• Aer prolonged storage, pump should be purged of air to
facilitate priming. Disconnect the discharge port to allow
liquid to pass through pump and measure ow.
– care should be exercised when
deciding the method of bypass from control valves. See Misng
on pages 4 and 5.
• It is recommended that the bypass be directed to a baed
reservoir tank, with at least one bae between the bypass
line and the inlet line to the pump.
• Although not recommended, bypass liquid may be returned
to the inlet line of the pump if the system is properly
designed to protect your pump.
• A low-pressure, exible hose should be used from the bypass
connecon to the inlet of the pump.
• Cauon should be exercised to avoid undersizing the bypass
hose diameter and length.
• Check the pressure in the bypass line to avoid over-
pressurizing.
Chemicals can be mixed into the uid and it is necessary to
understand whether these chemicals will damage the pump or
other system components. Another way to put chemicals into
the uid is with a downstream injector.
An injector works as a result of the dierence of pressure
between the inlet side of injector and discharge side. In most
cases, the pressure on the discharge side cannot exceed 1/2
of the inlet pressure. For example, 1000 PSI into an injector
should allow up to 500-600 PSI spray pressure on discharge
side. There are dual-funcon nozzles that permit high pressure,
chemical free rinse and low pressure, chemical spray. These
are convenient for the operator and will not harm a properly
designed system. The advantages of an injector are:
Fewer items touching chemical, the chemical injecon rate
can be controlled, and applying chemical at lower pressure
increases chemical use eciency.
The pumps may somemes be used with downstream heaters
and precauons need to be taken to protect the system and
persons from harm. Refer to the skilled sta at the equipment
manufacturer for guidance and proper system care. Please
be aware that heated water expands and addional pressure
release safety devices may be required.
A pump is the heart of every system and proper selecon is
crical to equipment funcon and durability. If a pumping set
with excess ow is chosen, then energy and uid is wasted.
If excess pressure results, then equipment eecveness can
decrease and so can pump life.
PRESSURE CLEANING
The opmal combinaon of PSI and GPM for cleaning is a rao
of 1 GPM for every 300-400 PSI. This combinaon maintains
sucient droplet size for cleaning force and distance. If the
ow is increased without an increase in pressure, the cleaning
impact does not increase with the increased use of uid. If
pressure increases, and ow does not, then the water droplet
size reduces and has less impact force, requiring closer cleaning
distances and increased risk of surface damage.
PEST SPRAYING
This applicaon can have specic chemical usage requirements
and applicaon pressure limits, so use the included informaon
as a guide only. Refer to label requirements for each specic
chemical.
LINE LOSS
When choosing a pump for spraying, pressure loss in the hose
must be considered. The pressure is greatest at pump and
decreases over the length of the hose. Typically, these systems
ulize very long hoses, 200-300 . is common, and requires
a certain minimum amount of performance to move the ow