CAMCORP HVP with Duroflow Blower - Manual (Page 69)

D--9--610 Page 14
SECTION 4
OPERATION
Future operating problems can be avoided if proper
precautions are observed when the equipment is first
put into service.
Before starting under power, the blower should be
turned over by hand to make certain there is no binding,
or internal contact.
LIMITATIONS
Each size blower has limits on pressure differential,
running speed, and discharge temperature which must
not be exceeded. These limits are shown in
FIGURE 4--1, page 15.
Operating beyond the specified oper-
ating limitations will result in damage
to the unit.
To accurately determine actual blower operating condi-
tions, it is important that all pressure and temperature
recordings are made directly at the ports of the blower
where these conditions are at their maximum.
Relief valves MUST be used to protect the blower
against excessive pressure or vacuum conditions.
These valves should be tested at initial start up to be
sure they are adjusted to relieve at 2 psi above the
maximum allowable pressure or at 2” HG below the
maximum allowable vacuum for the blower. Periodic
testing of relief valves is suggested to assure that they
are functioning.
Relief valves should be placed as
close as possible to the blower inlet
on vacuum systems or discharge on
pressure systems.
Check valves must be installed on the discharge side
of the blower on a pressure system and on the inlet side
of the blower on a vacuum system to eliminate product
ingestion resulting from autorotation and blow back
during equipment shutdown.
SAFETY PRECAUTIONS
1. Do not operate the blower with an open inlet or
discharge port.
2. Do not exceed specified vacuum or pressure
limitations.
3. Do not operate above or below recommended
blower speed range.
4. The blower is not to be used where non--sparking
equipment is specified. Contact your DuroFlow
Distributor for non--sparking requirements.
5. Do not operate the blower without belt guard or
coupling shield properly installed.
6. Do not exceed the manufacturer’s specified rim
speed limit for sheaves or couplings.
7. The blower and blower discharge piping may be
extremely hot and can cause skin burns on
contact.
8. Do not exceed the manufacturer’s certification
levels for vacuum or pressure vessels.