Goulds Pumps 3180-86 - IOM - Manual (Page 45)

Commissioning, Startup, Operation, and
Shutdown
Preparation for startup
WARNING:
• Failure to follow these precautions before you start the pump will lead to serious personal injury and
equipment failure.
• Do not operate the pump below the minimum rated flows or with the suction or discharge valves
closed. These conditions can create an explosive hazard due to vaporization of pumped fluid and can
quickly lead to pump failure and physical injury.
• Always disconnect and lock out power to the driver before you perform any installation or
maintenance tasks. Failure to disconnect and lock out driver power will result in serious physical
injury.
• Operating the pump in reverse rotation can result in the contact of metal parts, heat generation, and
breach of containment.
Precautions
NOTICE:
• Verify the driver settings before you start the pump.
• Make sure that the warm-up rate does not exceed 2.5°F (1.4°C) per minute.
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 200°F (93°C), then warm up the pump prior to
operation. Circulate a small amount of fluid through the pump until the casing temperature is within
100°F (38°C) of the 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.
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-side end plate.
5. Remove the driver half of the coupling guard:
a) Slightly spread the bottom apart.
b) Lift upwards.
6. 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.
7. Remove the pump half of the coupling guard:
a) Slightly spread the bottom apart.
Commissioning, Startup, Operation, and Shutdown
Models 3180, 3181, 3185, and 3186 Installation, Operation, and Maintenance Manual 43