Gorman-Rupp Pumps UNIT 608 1347755 thru 1395613 - Manual (Page 15)

OM−01228 UNIT SERIES
OPERATION PAGE C − 2
Liquid Temperature And Overheating
The maximum liquid temperature for this unit is
160
_ F (71_C). Do not apply it at a higher operating
temperature.
Overheating can occur if operated with the eductor
valve in the shutoff position for an extended period
of time. Operating against a closed valve could
bring the liquid to a boil, build pressure, and cause
the pump to rupture or explode. If overheating oc-
curs, stop the pump and allow it to completely cool
before servicing it. Refill the pump casing with cool
liquid.
Do not operate the pump against a
closed eductor control valve for long
periods of time. If operated against a
closed eductor control valve, pump
components will deteriorate, and the
liquid could come to a boil, build pres-
sure, and cause the pump casing to rup-
ture or explode.
OPERATION
Refer to INSTALLATION, Section B for proper set-
up of the cleaning system.
Turn the eductor valve to the shutoff position See
Figure 1 for the three positions of the eductor valve.
Do not operate the pump against a
closed eductor control valve for long
periods of time. If operated against a
closed eductor control valve, pump
components will deteriorate, and the
liquid could come to a boil, build pres-
sure, and cause the pump casing to rup-
ture or explode.
a) Shutoff b) Vacuum c) Backflush
Figure 1. Eductor Valve Positioning
Turn the power switch on and rotate the eductor
valve to the vacuum position (Figure 1-b). Observe
the sight glass on the reel assembly. As soon as liq-
uid appears, the tankleenor
t is ready for opera-
tion. Slowly push the hose along the bottom of the
tank. Dirt and contaminates will appear in the sight
glass as they are removed. Stop feeding the hose
into the tank until the sight glass clears, then con-
tinue feeding the nozzle along the bottom of the
tank until resistance is felt, indicating that the
nozzle has contacted the end of the tank.
A very slight movement of the reel and
standpipe assembly results in much great-
er movement of the hose and nozzle. Use
extreme caution when repositioning the
reel and standpipe to prevent tangling the
hose.