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©HALE PRODUCTS, INC. Our policy is one of continuous development. We therefore
reserve the right to amend specifications without notice or obligation.
VACUUM TEST PUMP MANIFOLD
If the pump will not hold the vacuum with the blanking caps in position, a leak is present in the pump,
and the pressure test detailed below must be carried out to trace it.
Should the pump not reach a vacuum of 20inHg [0.7bar] but will hold a lower pressure, a fault in the
priming system is indicated.
If the pump will not achieve 22inHg [0.74bar] vacuum for NFPA, and will not hold what it does achieve,
there is a leak, and possibly also a fault, in the priming system.
Check as follows:
Check the priming pump performance and related hose connections between the priming pump and
primer valve. Debug the priming system as described in
. If the vanes are
determined to be worn (sometimes indicated by smoke exhausting from the water exhaust port during
operation), a rebuild kit is available as noted within the recommended spares kit section in this
manual.
PRESSURE TEST – PERFORMED WITHOUT PUMP RUNNING
This test is to be carried out if the pump will not hold a vacuum with blanking cap(s) in position, and is
intended to trace the leaks responsible for the loss of vacuum.
Apply a water pressure of 50 – 100 PSI [3.5 - 7.0 bar] to the DSD pump and check for leaks. The area
causing the leak should be visible, and can be dismantled and rectified. If no leaks are apparent, the
leakage must lie between the priming valve and the primer pump.
Содержание HALE SmartCAFS
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