Flowserve ISC User Manual

Page 14

If the application limits for running in accordance with these

instructions cannot be observed, the temperature of the sup-
ply liquid and / or the installed components must be moni-
tored at all times by a device that shuts down the machine
once a critical temperature is reached. This device can con-
sist of resistance thermometers or thermoelements.

The seal chamber must be vented carefully before startup.

7.6 Observe the start-up. If the seal runs hot or squeals, check the

seal flush system. Do not allow the equipment to run for any
extended time if the seal gets hot or squeals.

8. Dual Seal Piping and Functional Recommendations

Forced ventilation of the seal chamber must be ensured when
the circulation pipe is connected. Should there be gas or air
pockets in the sealing chamber, these can accumulate with the
rotation at the outer diameter of the seal gap at machine start-
up. This causes the machine to run dry at the seal gap for an
indefinite period, and the seal faces can become damaged.

Figure 8

. Flush taps

and

the gland are barrier fluid
inlet and outlet ports.
Use Figure to determine
which ports to use as inlet
and outlet.

Shaft rotation from exposed
end of gland

Inlet Outlet

Clockwise (CW)

Port

Counterclockwise (CCW) Port

Port

Figure 9.

Double ISC with Supply Tank