Precautions
WARNING:
The mechanical seal used in an Ex-classified environment must be properly certified.
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 maximum allowable temperature change for an abnormal transient event such as
thermal shock is 167°C | 300°F.
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 150°C | 300°F, then warm up the pump
prior to operation. Circulate a small amount of fluid through the pump until the casing tem-
perature is within 39°C | 70°F of the fluid temperature. Accomplish this by flowing fluid
through the casing drain and allowing it to flow through the pump exiting at the discharge
nozzle (optionally, fluid may also be allowed to enter the suction nozzle in addition to the
drain.). Soak for (2) hours at process fluid temperature.
NOTICE:
For pumps with austenitic or duplex stainless steel casing construction, the temperatures stat-
ed above must be halved. E.g. for D-1 construction the recommended warm up rate is per mi-
nute.
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 (508) toward the pump.
3.
Remove the nut, bolt, and washers from the driver half (508) of the coupling guard.
4.
Remove the driver half (508) of the coupling guard:
5.2 Remove the coupling guard
Model 3700i API610 / Type OH2 Installation, Operation, and Maintenance Manual
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