Goulds Pumps ANSI FAMILY IOM (ATEX Compliant) - Manual (Page 40)

If using a cartridge mechanical seal, the centering
clips must be installed and set screws loosened prior
to setting impeller clearance.
l
! ! CAUTION
Failure to do so could result in sparks, heat
generation, and mechanical seal damage.
Once proper impeller setting is achieved, tighten the
set screws in the seal locking ring and remove the
centering clips prior to starting the pump.
COUPLE PUMP AND DRIVER
s
! WARNING
Lock out driver power to prevent accidental
rotation and physical injury.
The coupling used in an ATEX classified
environment must be properly certified.
1. Install and lubricate coupling per manufacturer’s
instructions.
38
ANSIFAM IOM - 5/08
Service temperature in an ATEX classified environment is limited by Table 1 in the SAFETY section.
Table 3
Impeller Clearances
Cold Temperature Clearances for Various Service Temperatures, inches (mm)
Service Temperature 3196 and HT3196 LF3196
STX MTX/LTX XLTX/X17 STX MTX/LTX
inches mm inches mm inches mm inches mm
-20 to 150°F (-29 to 66°C) 0.005 0.13 0.008 0.20 0.015 0.38 0.015 0.38
Up to 175°F (79°C) 0.005 0.13 0.008 0.20 0.015 0.38 0.015 0.38
Up to 200°F (93°C) 0.005 0.13 0.008 0.20 0.015 0.38 0.015 0.38
Up to 250°F (121°C) 0.006 0.16 0.009 0.23 0.016 0.41 0.016 0.41
Up to 300°F (149°C) 0.007 0.19 0.010 0.26 0.017 0.44 0.017 0.44
Up to 350°F (177°C) 0.009 0.22 0.012 0.29 0.019 0.47 0.019 0.47
Up to 400°F (204°C) 0.010 0.25 0.013 0.32 0.020 0.50 0.020 0.50
Up to 450°F (232°C) 0.011 0.28 0.014 0.35 0.021 0.53 0.021 0.53
Up to 500°F (260°C) 0.012 0.30 0.015 0.38 0.022 0.56 0.022 0.56
Up to 550°F (288°C) 0.013 0.33 0.016 0.41 0.023 0.59 0.023 0.59
Up to 600°F (316°C) 0.014 0.36 0.017 0.44 0.024 0.62 0.024 0.62
Up to 650°F (343°C) 0.016 0.39 0.019 0.47 0.026 0.65 0.026 0.65
Up to 700°F (371°C) 0.017 0.42 0.020 0.50 0.027 0.68 0.027 0.68
Table 3, cont’d
Impeller Clearances
Cold Temperature Clearances for Various Service Temperatures, inches (mm)
Service Temperature CV 3196
1
3796 NM 3196 3198
STX MTX/LTX XLTX STX MTX/LTX STX MTX/LTX STX MTX/LTX
-20 to 150°F (-29 to 66°C) 0.06 1.52 0.015 0.38 0.005 0.13 0.008 0.20 0.015 0.38
Up to 175°F (79°C) 0.06 1.52 0.015 0.38 0.005 0.13 0.008 0.20 0.020 0.51
Up to 200°F (93°C) 0.06 1.52 0.015 0.38 0.005 0.13 0.008 0.20 0.024 0.61
Up to 250°F (121°C) 0.06 1.52 0.016 0.41 0.032 0.81
Up to 300°F (149°C) 0.06 1.52 0.017 0.44 0.040 1.02
Up to 350°F (177°C) 0.06 1.52 0.019 0.47
Up to 400°F (204°C) 0.06 1.52 0.020 0.50
Up to 450°F (232°C) 0.021 0.53
Up to 500°F (260°C) 0.022 0.56
Up to 550°F (288°C)
Up to 600°F (316°C)
Up to 650°F (343°C)
Up to 700°F (371°C)
Out of pump temperature range =
1
Clearance is set from the back of the impeller to the stuffing box cover / seal chamber / backplate.
Footnote #1: CV3196 impeller clearance is set off seal chamber face.