23
MAINTENANCE
07
Manual 1843 Rev B p/n 001843 0000
GENERAL
During normal operation, the temperature in the
pump will increase in homogeneous manner as a
result of compression work done on the process
gas or vapor. It is abnormal if the temperature
rise is localized in the pump and/or the external
paint becomes scorched. Localized hot spots are
typically due to an inadequate cooling liquid supply
or cooling liquid cut-off, interference of the piston
with cams, slide pins, or cylinder, process material
build-up, or because the pump has ingested
foreign material, such as solid particulates, metal
chips, etc. If a localized hot spot is observed,
the pump must be shut down immediately for
inspection.
Most pump abnormalities can be noted by
routine checks of temperature, vibration and
noise, etc. Daily inspection of the pump is highly
recommended as preventative maintenance.
Whenever the pump is stopped, completely drain
the cooling liquid if the pump is located in a cold
region, or in the winter to prevent freezing of the
cooling liquid.
DANGER
!
The pump and parts may
contain hazardous media as
determined by the process.
Assure that pump and parts are
evacuated of hazardous media
prior to servicing.
CAUTION
!
The electrical service must be isolated and
de-energized prior to maintenance. Apply
appropriate procedures to assure electrical
supply is de-energized and cannot be
inadvertently energized during maintenance.
Assure piping and product are isolated prior
to maintenance of pump. Apply appropriate
procedures to assure piping and product
is isolated and that inadvertent opening of
valves cannot occur during maintenance.
PERIODIC MAINTENANCE
There is no fixed interval for changing pump
oil, since applications vary widely. This can
be determined only by experience and/or by
deterioration of pump performance. As a minimum,
the pump oil should be changed after each six-
month logged period of operation.
At high pressures, or with a gas ballast flow, the
oil level should be higher than it is when operating
at low pressures near blank-off. If there are no
changes in the oil level, check for obstructed
oil passages. Check the condition of the oil
periodically by draining a small quantity of oil into
a clean container and visually inspecting it for solid
or liquid contaminants. Clean y-strainer after oil
pump (KT-500 and KT-850) at least at every oil and
filter (if so equipped) change.