Table 2-3. Operator/Crew Preventive Maintenance Checks and Services
B - Before
D - During
A - After
H - Hourly Interval
Item to be
Check for and have repaired
or adjusted as necessary
Do not operate ROWPU with an
open box assembly; it can kill you
Inspect the plug connectors, toggle
switches, and lamps for loose
mountings and bad parts. Replace
lamps that dont work. See that the
junction box is securely mounted
and kept closed.
R.O. pump drive
Inspect belt guard for loose
Belt guard off or
mounting bolts. Tighten all
Studs, nuts, and capscrews.
R.O. Pump drive
Check all five V-belts for cracks,
Rubbing, and signs of wear.
Check belt tension: You should be
Able to push belts down only a
half- inch at c enter of span.
R.O. pump, wiring, motor
Inspect wire connection going to
mounts, head gasket, and
junction box. Inspect the motor
mounts for cracks or breaks. Look
for dirt, corrosion, or water damage.
Check for head gasket leaks and
P-D-680 is potentially dangerous.
Avoid repeated and prolonged
breathing of vapors and skin contact
with the liquid. Do not use near open
flame, arcing equipment or other
ignition sources. Always wear
protective clothing and eyewear.