Armstrong 4600 HSC series Installation And Operating Instructions Manual - Page 6

Browse online or download pdf Installation And Operating Instructions Manual for Water Pump Armstrong 4600 HSC series. Armstrong 4600 HSC series 16 pages. Horizontal split case fire pumps. 12x8x18f

Armstrong 4600 HSC series Installation And Operating Instructions Manual
i n s ta l l at i o n &
o p e r at i n g i n s t r u c t i o n s
6

1.4. alignment

The flexible coupling compensates for temperature changes
and permits shafts end movement without interference; it will
not compensate for misalignment. Faulty alignment will result in
noisy pump operation, reduced bearing life, and excessive
coupling wear.
• Carefully verify the alignment after the foundation bolts
have been properly tightened
• Alignment should be again verified after piping is installed
and unit has operated under normal conditions at operat-
ing temperature
• To verify alignment, place a straight edge across the cou-
pling as shown; this must rest evenly on both rims at top,
bottom and both sides
• With a pair of inside calipers or thickness gauge, check
distance between coupling halves at points where straight
edge was used; distance must be equal at all points

1.5. minimum fittings

If minimum fittings recommended by n.f.p.a. 20 are supplied
loose, they should be installed as follows:
testing alignment
angular
misalignment
feeler taper
perfect
alignment
Horizontal split case
fire pumps
straight gauge
feeler gauge
circulation relief valve (not supplied with diesel driven
pumps)
• Install Circulation Relief Valve at the casing discharge (al-
ways before the check valve)
• Set pressure at the minimum suction pressure plus the pump
rated pressure raised to the next higher 5 lb. increment
• Circulation relief valve and stuffing box should then be piped
to drain
automatic air release valve
• Install automatic air release valve on top of pump casing
to vent casing and suction piping of air and vapor before
start-up.
suction and discharge gauges
• The following gauges are required to measure both suction
and discharge pressures, and must be supplied with all fire
pumps to ensure close check on pump performance:
a 3½" dial combination pressure and vacuum suction gauge
b 3½" dial discharge pressure gauge
c ¼" cocks with lever handle
parallel
alignment
straight gauge