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Using WATCHDOG®
products with mounting adapters
Using Mounting Adapters - The 1" NPT of
the WATCHDOG® is directly related to the 1" level
viewing area. When using mounting adapters less than the
1" NPT, it is important to realize that what is indicated
in the WATCHDOG® sight may not be a true indication
of the level in the bearing housing. This happens for
one of two reasons:
- Trapped Air
When the oil level rises in the bearing housing, the
internal diameter of the fitting allows air to become
trapped in the upper portion of the WATCHDOG®
surge chamber. Therefore, the level seen in the sight
of the WATCHDOG® is possibly much lower than what
is actually in the bearing housing (Fig. 1).
- Trapped Fluid
When the oil level is lowered in the bearing housing,
the internal diameter of the fitting allows fluid
to become trapped in the lower portion of the WATCHDOG®
surge chamber. Therefore, the level seen in the sight
of the WATCHDOG® is possibly much higher than
what is actually in the bearing housing (Fig. 1)
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