Sundyne LMV-333, Инструкция по эксплуатации

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2
B. A suction strainer is recommended to protect
the impeller from damage by mill scale, weld
slag, or other foreign particles. A cone
shaped strainer with ¼ inch (6.35 mm) holes
is preferred. For initial start-up, a screen with
mesh openings of .060 inch (1.524 mm) can
be attached over the cone then removed after
the system is clean. Use caution not to run
the pump with a clogged strainer.
C. A discharge check valve should be used if
reverse flow is likely during shutdown.
Never leave the suction block valve closed with
the discharge block valve open.
5. SEAL ENVIRONMENTAL CONTROL SYSTEM
Depending upon the pump seal arrangement and
application, a seal environmental control system
may be required.
A. Refer to the specification sheet and outline
drawing to determine the seal arrangement
and system requirements.
B. Many sealing options exist. Consult your
Sundyne representative if alternatives are
required.
6. GEARBOX HEAT EXCHANGER
A. The standard heat exchanger is a shell and
tube water-cooled type.
B. Cool water should be provided at 150 psig
(11 kg/cm
2
) maximum pressure. Coolant
flow should be controlled to maintain a
gearbox sump temperature between 140°F
to 200°F (60°C to 93°C).
C. The optional air-cooled heat exchanger
should be controlled to maintain the same
gearbox sump temperature as above.
NOTE
Refer to the outline drawing for heat
exchanger mounting configuration. The
assembly should not be rearranged without
consulting the factory. THE HEAT
EXCHANGER IS NEVER MOUNTED
HIGHER THAN THE GEARBOX MANIFOLD.
D. For more detail refer to section “II. LUBE
SYSTEM”.
7. DRIVER AND COUPLING
Drivers are normally shipped separately from the
gearbox and compressor. When a splined
interconnecting shaft is supplied, this shaft must
be lubricated at each end with one tube (5cc) of
anti-fretting compound (Sundyne Part Number
MP01AA10). Also available are solid shaft drivers
coupled to the gearbox with a flexible coupling.
See Section
“IV. SERVICING” for further
coupling information.
Drivers are to be installed and maintained in
accordance with the manufacturer’s instructions.
8. LOCATION
The installation should provide clearance on
either side for removal and service. Overhead
clearance must be provided for lifting out the
driver or gearbox assembly.
9. MOUNTING
The vertical motor stand should be mounted on a
rigid concrete foundation, secured in position by
7/8-inch diameter bolts and grouted in place. The
bolts should be installed in the foundation as
shown on the outline drawing. The length of the
bolts should be sufficient to extend at least ¼
inch above the nut. The base mounting pads
should be leveled prior to grouting. Grout must be
allowed to set for at least 48 hours before
tightening foundation bolts. Customer shall
provide a 4” x 4” x ¼” thick steel plate under each
leveling screw.
10. ALIGNMENT
A. Spline driven units do not require alignment.
B. For units driven by flexible couplings, refer
to section “IV. SERVICING”.
11. PIPING CONNECTIONS
A. Drain lines from the seal housing ports may
be necessary. Refer to the outline drawing
for port usage.
B. Port number 1 (shown in Figure 4) must
always be open to atmosphere or piped to
safety drain or flare with a backpressure not
exceeding 7 psi (0.49 kg/cm
2
).
12. DIFFUSER CAVITY VENT
The diffuser cavity vent must be open to atmosphere
or to a safety drain with no back pressure. See
figure “Wet End Components” for location.
Note: Process fluid may accumulate causing a
potentially hazardous situation if the diffuser
cavity is not properly vented.