WIL-17011-E-02
13
CSA-Certified Pumps
Prior to Maintenance
Before any maintenance is performed, confirm pump is completely
de-energized by shutting off the pump and disconnecting the gas
supply line to the pump. Refer to Section 7, Reassembly Hints & Tips
and Section 8, Exploded View & Parts Listings in the EOM manual for
maintenance and spare parts information
Operation
CSA-certified pumps are pre-lubricated, and do not require in-line
lubrication. Additional lubrication will not damage the pump, however
if the pump is heavily lubricated by an external source, the pump’s
internal lubrication may be washed away. If the pump is then moved
to a non-lubricated location, it may need to be disassembled and re-
lubricated as described in the “Disassembly/Reassembly”. Pump
discharge rate can be controlled by limiting the volume and/or
pressure of the air supply to the pump. An air regulator is used to
regulate air pressure. A needle valve is used to regulate volume.
Pump discharge rate can also be controlled by throttling the pump
discharge by partially closing a valve in the discharge line of the
pump. This action increases friction loss which reduces flow rate.
(See Section 5.) This is useful when the need exists to control the
pump from a remote location. When the pump discharge pressure
equals or exceeds the air supply pressure, the pump will stop; no
bypass or pressure relief valve is needed, and pump damage will not
occur. The pump has reached a “deadhead” situation and can be
restarted by reducing the fluid discharge pressure or increasing the
air inlet pressure. CSA-certified pumps run on pressurized sweet gas
and do not generate heat; therefore, your process fluid temperature
will not be affected.
Maintenance and Inspections
Because each application is unique, maintenance schedules maybe
different for every pump. Frequency of use, line pressure, viscosity
and abrasiveness of process fluid all affect the parts life of a Wilden
pump. Periodic inspections have been found to offer the best means
for preventing unscheduled pump downtime. Personnel familiar with
the pump’s construction and service should be informed of any
abnormalities that are detected during operation.
Records
When service is required, a record should be made of all necessary
repairs and replacements. Over a period of time, such records can
become a valuable tool for predicting and preventing future
maintenance problems and unscheduled downtime. In addition,
accurate records make it possible to identify pumps that are poorly
suited to their applications.
SUGGESTED INSTALLATION, OPERATION, MAINTENANCE
AND TROUBLESHOOTING