Teikoku DynaPump LE Series, Instruction Manual

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mal noise or vibrations should be corrected im-
mediately.
4. When the pump is running at full speed, slowly
open the valve in the discharge line to the de-
sired setting.
5. Once pump is operational, check the reading of
the TRG meter. If the meter is in the green, pump
is operating normally. If the meter is in the yellow
or red, stop the pump and check for possible
causes of the incorrect reading. Record initial
reading for comparison to future readings.
CAUTION
The pump should not be allowed to run for
more than one minute with the discharge
valve fully closed.
NOTES:
1. If the suction and discharge lines are completely
filled with system fluid and adequate suction head
is available, the pump can be started without clos-
ing the discharge valve. During any start up se-
quence, caution must be exercised not to exceed
full load ampere rating indicated on the name-
plate.
2. If the unit has not been run for a period of two
weeks or more, the following inspections should
precede its operation:
A . Check terminal box for moisture.
B. Upon starting, check for excessive noise, vi-
bration, erratic speeds or excessive amp
draw.
CAUTION
If the pump appears to be air bound as a
result of the unit not being properly primed,
do not continue operation. Locate and cor-
rect the conditions that prevent proper prim-
ing before attempting to start the unit.
3-5. Operation Details
TRG meter should be checked periodically during
operation. If the initial reading (TRGi) was not re-
corded, then the color coding system shown in sec-
tion 2-3.4, Page 7 may be used to determine bearing
changing intervals. If the TRGi was recorded, then
the following formulas can be used. If the reading
exceeds TRGi +0.3, then the pump should be sched-
uled for maintenance. If the reading exceeds TRGi
+0.4, then the pump should be shut down and re-
moved for maintenance.
Discharge pressure should be checked frequently
during operation. Pressure should be stable in a
non-variable closed loop although the discharge
pressure gauge needle may show small fluctuations.
In some cases, the fluid supply may contain an ex-
cessive amount of air or gas, which will tend to sepa-
rate from the fluid and remain in the passages of the
pump. This results in the pump losing its prime and
becoming air bound with a marked reduction in ca-
pacity. The discharge pressure gauge will show large
fluctuations if this occurs.
3-6. Shutdown Procedure
Shutdown as follows:
1. Close the valve in the discharge line.
CAUTION
The pump should not be allowed to run for
more than one minute with the discharge
valve fully closed.
2. Stop the pump (De-energize the motor).
3. Close suction valves if pump is to be removed
from service.
CAUTION
If the pump is to be shut down for a long
period of time or if there is danger of freez-
ing, after stopping the pump, shut all suc-
tion and discharge valves, and drain the en-
tire pump and connected piping.
NOTE
To assist in determining remedies for vari-
ous problems, see Table 2-2, Page 8
Trouble Shooting.
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