Goulds Pumps ANSI FAMILY IOM (ATEX Compliant) - Manual (Page 45)

Suction Supply Below Pump - 3796
NOTE: The 3796 is a self-priming pump and
does not require manual priming prior to start-
up (except for the initial charge). However, in a
pressurized system, the pump requires an air
vent or a permanent bypass line in the dis-
charge piping to vent the evacuated air.
Other Methods of Priming:
1. Priming by Ejector.
2. Priming by Automatic Priming Pump.
l
! CAUTION
START-UP PRECAUTIONS
1. All equipment and personal safety related devices
and controls must be installed and operating
properly.
2. To prevent premature pump failure at initial
start-up due to dirt or debris in the pipe system,
ensure the system has been adequately cleaned
and flushed.
3. Variable speed drivers should be brought to rated
speed as quickly as possible.
4. Variable speed drivers should not be adjusted or
checked for speed governor or overspeed trip
settings while coupled to the pump at initial
start-up. If settings have not been verified,
uncouple the unit and refer to driver
manufacturer’s instructions for assistance.
5. Running a new or rebuilt pump at slow speeds
may not provide enough flow to adequately flush
and cool the stuffing box bushing’s close running
surfaces.
6. Pumpage temperatures in excess of 200° F
(93° C) will require warm-up of pump prior to
operation. Circulate a small amount of pumpage
through the pump until the casing temperature is
within 100° F (38° C) of the pumpage temperature
and evenly heated.
NOTE: Warm-up rate should not exceed 1.4° C
(2.5° F) per minute.
ANSIFAM IOM - 5/08
43
Fig. 32
4
CONCENTRIC
Fig. 33
3796 PRIMING IN A PRESSURIZED SYSTEM