•
Refer to driver/coupling/gear manufacturer's installation and operation manuals
(IOM) for specific instructions and recommendations.
Precautions
CAUTION:
When a cartridge mechanical seal is used, ensure that the set screws in the seal locking ring
are tightened and that the centering clips have been removed prior to startup. This prevents
seal or shaft sleeve damage by ensuring that the seal is properly installed and centered on the
sleeve.
NOTICE:
•
Verify the driver settings before you start any pump. Refer to the applicable drive equip-
ment IOMs and operating procedures.
•
Excessive warm-up rates can cause equipment damage. Ensure the warm-up rate does
not exceed 1.4°C | 2.5°F per minute.
•
The mechanical seal used in an Ex-classified environment must be properly certified.
NOTICE:
You must follow these precautions before you start the pump:
•
Flush and clean the system thoroughly to remove dirt or debris in the pipe system in order
to prevent premature failure at initial startup.
•
Bring variable-speed drivers to the rated speed as quickly as possible.
•
If temperatures of the pumped fluid will exceed 93°C | 200°F, then warm up the pump pri-
or to operation. Circulate a small amount of fluid through the pump until the casing tem-
perature is within 38°C | 100°F of the fluid temperature. Accomplish this by flowing fluid
from pump inlet to discharge drain (optionally, the casing vent can be included in warm-up
circuit but not required). Soak for (2) hours at process fluid temperature.
At initial startup, do not adjust the variable-speed drivers or check for speed governor or over-speed trip
settings while the variable-speed driver is coupled to the pump. If the settings have not been verified,
then uncouple the unit and refer to instructions supplied by the driver manufacturer.
5.2 Remove the coupling guard
1.
Remove the nut, bolt, and washers from the slotted hole in the center of the coupling guard.
2.
Slide the driver half of the coupling guard toward the pump.
3.
Remove the nut, bolt, and washers from the driver half of the coupling guard.
4.
Remove the driver half of the coupling guard:
a) Slightly spread the bottom apart.
b) Lift upwards.
5.
Remove the remaining nut, bolt, and washers from the pump half of the coupling guard.
It is not necessary to remove the end plate from the pump side of the bearing housing. You can
access the bearing-housing tap bolts without removing this end plate if maintenance of internal
pump parts is necessary.
6.
Remove the pump half of the coupling guard:
a) Slightly spread the bottom apart.
5.2 Remove the coupling guard
Models 3180, 3181, 3185, and 3186 Installation, Operation, and Maintenance Manual
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