Gorman-Rupp Pumps UNIT 608 1395614 and up - Manual (Page 16)

OM-01228 UNIT SERIES
OPERATION PAGE C - 3
With experience, the operator will learn how to
move the hose to achieve thorough cleaning. The
nozzle should be run to the end of the tank, then
retracted to the standpipe while observing the
sight gauge for additional contaminates during the
return path.
The hose and nozzle cleaning path must
be centered within an 18 to 24 inch wide
(457 to 610
mm) strip, running longitudi­
nally (lengthwise) in the bottom of a cylin­
drical tank. Prior knowledge of the tank
size and direction are essential to ensure
proper hose travel and direction. If the
hose does not traverse the bottom of the
tank within the 18 to 24 inch wide (457 to
610
mm) strip, the nozzle may run up the
tank side wall and cause the hose to flip
over, creating a severe tangling situation.
Tangling the hose will result in great diffi­
culty in retrieving the hose through the
standpipe and probable destructive dam­
age to the hose. Damage to the hose or
nozzle cause by improper use will not be
covered by the pump warranty. If the hose
becomes tangled, see TROUBLESHOOT­
ING, Section D.
If the suction nozzle becomes clogged with debris,
as evident when product is present in the sight
glass but no movement is observed, the obstruc­
tion can normally be flushed from the hose by re­
versing the liquid flow for a few seconds (see Fig­
ure 1‐c). After backflushing, return the valve to the
vacuum position (Figure 1‐b) and resume the
cleaning process.
When performing the cleaning operation,
keep the suction and discharge hoses
submerged and off the bottom of the con­
tainer. Otherwise, spillage or flow shutoff
could occur.
STOPPING
When the cleaning job is completed or the cleaning
drum becomes full, turn the switch to the pump off
and turn the eductor valve in the shutoff position
(Figure 1‐a). This will prevent the liquid in the drum
and pump from siphoning back into the tank.
When the cleaning job is completed, clean the
system for storage as follows:
S
Wipe the hose assembly as it is reeled up
from the tank.
S
Place the suction nozzle of the hose as­
sembly in a container of clean water and
pump water until the liquid being dis­
charged appears clear.
Use caution when winding the hose as­
sembly onto the reel to ensure that the
hose assembly doesn't “kink” or twist. This
could result in permanent damage to the
hose assembly. Damage resulting from im­
properly winding the hose onto the reel will
not be covered by the pump warranty.
S
Rewind the hose assembly onto the reel.
Use caution when winding the hose onto
the reel to ensure that the hose doesn't
“kink”or twist, which can result in perma­
nent damage to the hose.
S
When the hose is fully wound onto the reel,
anchor it in place with the retaining clip.
Rotate the reel several times to drain ex­
cess liquid from the hose.
S
Disconnect the reel assembly from the
standpipe and secure it on the base. Dis­
connect the power cable and ground wire.
Coil and stow them on the cable retaining
rack.
S
Disconnect and drain the suction and dis­
charge hoses.
If the unit will be stored for an extended period, re­
move the drain plug from the pump casing and
drain any remaining liquid. Clean and reinstall the
drain plug.