EVAPCO LPT Series Rigging And Installation Manual page 10

Low Profile Forced Draft Towers, Coolers and Condensers
Final Assembly and Start-up Details
Shipping Materials - Remove any wood chocks, spare parts, or miscellaneous items that have been placed inside the unit for
shipping purposes. Clean all debris from the basin.
Pump Discharge Line - Connect the riser pipe from the pump discharge on the pan-fan section to the riser pipe on the coil section
using the flexible connection and hose clamps provided.
Bleed-off Line - A bleed-off line and valve are installed on the unit when shipped with a pump. On units shipped without a pump
(remote sump applications) make sure a bleed-off line and valve are properly sized and installed on the discharge side of the pump
and connected to a convenient drain. In either case, the bleed-off valve should be fully open.
Strainer - Check the strainer in the basin to ensure that it is in its proper location over the pump suction as shown in Figures 12a
and 12b.
Figure 12a – Strainer Location on 3' (1 m) and 5' (1.5 m)
Screens - Protective air inlet screens are provided across the front of the fan section of all models. Screens or panels are provided
on the bottom of the fan section.
Float Valve Adjustment - The float valve is pre-set at the factory, however adjustment should be checked after rigging. The
float valve should be adjusted so that the center of the float is 1" (1-2 cm) below the center of the overflow connections when
the valve is in the fully closed position. Raise or lower the float by using the wing nuts on the vertical threaded rod. Do not
adjust the horizontal rod. During normal operation, the water level will drop 3" to 4" (8-10 cm) below the overflow in condensers
and coolers; and to approximately 5" to 6"( 12-15 cm) below the overflow in cooling towers.
See Table 5 for normal operating level for the LR and LP style units.
Fan Rotation - Bump start and check the fans for proper rotation. Directional arrows are placed on the outside of centrifugal fan
housings or on the inside of axial fan cylinders.
Pump Rotation - Bump start and check the pump for proper rotation. Directional arrows are found on the pump impeller housing.
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STRAINER
SUCTION PIPE
Wide Units
Table 5 – Minimum Operating Level
Coil/Casing
Footprint
3' x 6' (0.9 x 1.8 m)
5' x 6' (1.5 x 1.8 m)
5' x 9' (1.5 x 2.7 m)
5' x 12' (1.5 x 3.6 m)
8' x 9' (2.4 x 2.7 m)
8' x 12' (2.4 x 3.6 m)
Figure 12b – Strainer Location on 8' (2.4 m) Wide Units
Min. Operating Level
8" (200 mm)
8" (200 mm)
8" (200 mm)
8" (200 mm)
8" (200 mm)
8" (200 mm)
STRAINER
SUCTION PIPE