2-17. PREPARATION FOR MOVEMENT
Prepare the ROWPU for movement as follows:
If unit will be shutdown for more than 24 hours, perform normal shutdown. If unit will be shutdown
for more than 72 hours, perform extended shutdown.
Shutdown ROWPU. Perform shutdown procedures (normal shutdown para 2-14a, extended shutdown para. 2-14b).
Drain ROWPU Pines. Filters, and Connections.
Open seven drain valves on models WPES-10, WPES-20 and WPES-30; open six drain valves on models H-
9518-1, H-9518-2 and H-9518-3 (para. 2-2i).
(WPES-10 and H-9518- 1) Facing trailer from towing end, use leveling jacks to raise left side of trailer permit
maximum drainage through drain valve.
Set front sample valves to open and rear sample valves to sample position (figure 2-47) to allow R.O. vessels
to drain. When fully drained, close front sample valves and set rear sample valve to sample position.
Drain Chemical Feed Pump.
Chemicals used for operating ROWPU can kill you. The chemicals alone or in the mixture can be
dangerous. Always wear protective gloves, goggles and apron, Make sure area is well ventilated.
Empty and rinse all utility pails. Fill one pail with water from backwash tank and place it next to the
chemical feed pump.
Place both pails on top of chemical feed cans.
Disconnect four chemical feed suction (female) hoses (figure 2-56) from the chemical cans and place ends of
hoses in pail full of water.
Disconnect four chemical feed return (male) hoses (figure 2-56) from the chemical cans and place ends of
hoses in empty pail.
Set CHEMICAL FEED PUMP switch (38, figure 2-5) to START. Allow chemical feed pump to operate
(about five minutes) until chemicals are rinsed from chemical feed hoses, valves and pumps. Ensure all
control knobs (figure 2-56) are set to 10.
Remove chemical feed suction hoses from pail and allow chemical feed pump to run until water is pushed
Set CHEMICAL FEED PUMP switch (38, figure 2-5) to STOP.
(8) Remove chemical feed return hoses from pail and allow to drain.
Change 2 2-133