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Maintenance
333309E 29
Maintenance
Care of the Pump
• If a supply container is dry, stop the pump immedi-
ately and relieve the pressure. Refill the container,
and prime the system. Be sure to eliminate all of the
air from the system.
• Keep the throat packing reservoirs one-half filled
with TSL.
• Observe the pot life limit. Flush the mixed fluid out of
the mix manifold, dispensing lines and equipment
before it hardens.
• Flush the complete system, when necessary to pre-
vent the fluids from hardening in the equipment and
hoses.
• Check the fluid manufacturer’s instructions for fluid
shelf life, and flush the entire system before this
time is reached.
• Flush the system with a compatible solvent.
• With heavy fluids, flushing solvents could channel
through the fluid, leaving a coating of fluid on the
inside of the hoses. Allow pump to flush at higher
cycle rates to create turbulent flow and better clean-
ing action. Disconnect the hoses and clean the fluid
out with a rag and wire or a ramrod type cleaner, or
use a solvent and air purge to agitate the solvent,
and flush until the mix manifold, hose, and gun are
clean.
• For daily or long term shutdown stop the pump at
the bottom of the stroke to protect the displacement
rod from dried or cured material.
Preventive Maintenance
Schedule
The operating conditions of your particular system
determine how often maintenance is required. Establish
a preventive maintenance schedule by recording when
and what kind of maintenance is needed, and then
determine a regular schedule for checking your system.
Tighten Threaded Connections
Before each use, check all hoses for wear or damage.
Replace as necessary. Check that all threaded connec-
tions are tight and leak-free.
Flush the Pump
When to Flush the Pump:
• Before first use
• When changing colors or fluids
• Before repairing equipment
• Before fluid dries or settles out in a dormant pump
(check the pot life of catalyzed fluids)
• Before storing the pump
Flushing Guidelines
• Flush at the lowest pressure possible.
• Flush with a fluid that is compatible with the fluid you
are pumping and with the wetted parts in your sys-
tem.
• Check with your fluid manufacturer or supplier for
recommended flushing fluids and flushing fre-
quency.
• If the pump is to be stored for any period of time,
and you are pumping water-based fluid, first flush it
with water, then with mineral spirits to protect the
pump parts.
NOTICE
Do not allow the supply containers to run dry of the
fluid being pumped. A dry container allows air to be
pumped into the system and can cause incorrect pro-
portioning. One dry displacement pump can damage
the other displacement pump by causing a pressure
rise in the other pump.
To avoid fire and explosion, always ground
equipment and waste container. To avoid static
sparking and injury from splashing, always flush at
lowest possible pressure.