Symptom
Cause
Remedy
The seal squeals during opera-
tion.
The self-aligning bearing lacks lubrica-
tion.
Grease the self-aligning ball bearing.
Carbon dust is accumulating on
the outside of the gland ring.
There is an inadequate amount of liq-
uid at the seal faces.
Bypass the flush line. If a bypass line is
already in use, then enlarge it to produce
more flow.
Consult an ITT representative.
The seal leaks but nothing ap-
pears to be wrong.
The seal faces are not flat.
Relap or replace the seal faces.
The seal is wearing out too
quickly.
This product is abrasive. This causes
excessive seal face wear.
Determine the source of the abrasives
and install a bypass flushing in order to
prevent abrasives from accumulating in
the seal area. Install a cyclone separator
as necessary.
Abrasives are forming due to the proc-
ess liquid cooling and crystallizing or
partially solidifying in the seal area.
Install a bypass flush line in order to hold
the liquid temperature around the seal
above the crystallization point.
The seal is running too hot.
Check for possible rubbing of the seal
components. Recirculation or a bypass
line may be necessary.
The wrong kind of seal was used.
Consult an ITT representative.
7.1 Operation troubleshooting
58
Model VICR Installation, Operation, and Maintenance Manual