Gorman-Rupp Pumps T6A60S-5.7 NG-ESP All serial numbers - Manual (Page 21)

OM-06610 SUPER T SERIES
OPERATION PAGE C - 4
put contacts close, then after the “Hrn dLy”
time, A output contacts close. A output con­
tacts will remain closed as long as Low Tem­
perature Thermostat contacts are closed.
When the Low Temperature Contacts open, A
output contact will open only if the level is
equal to or less than the “A.off” setpoint.
As long a the Low Temperature Thermostat
contacts are closed, the display will show “lo
tpt” unless switch is pressed to display
some other information. Level is not viewable
until the Low Temperature Thermostat con­
tacts open.
The user may wish to check Setpoints Off/On
and Horn output/A output delay times. “Bump­
ing” the switch will display all of the informa­
tion desired.
NOTE
One second delays in contact opening/closing is a
result of time sampling of the pressure signal to fil­
ter false signals that could cause “nuisance” trip­
ping of the contacts.
NOTE
If the “Hrn dLy” is changed during the actual A out­
put delay cycle, the current cycle is not changed;
the change becomes effective on the next A output
delay cycle.
Use caution to ensure that the “‐‐.on” set­
point (i.e. “A.on”) is not adjusted to a level
less than the corresponding “‐‐.of” set­
point (i.e. “A.of”). Improper adjustment of
the off/on setpoints will render the unit non‐
functional, resulting in flooding.
EPS Calibration
NOTE
Zero offset and span adjustments are only neces­
sary to calibrate a new unit, or when replacing the
transducer. Once calibrated, “ON” and “OFF” set­
points will be stored in the unit's memory. Liquid
level adjustments will be used whenever “ON” and
“OFF” liquid levels must be reset.
There are two reasons for the user to calibrate the
unit. When power is applied, the unit confirms set­
points and other calibration information for validity.
If the setpoints are not valid, the LCD screen shows
“EEP bAd” and the unit must be recalibrated. Also,
if the unit is moved, or some other external change
takes place, the unit must be recalibrated.
Zero Adjustment
Zero adjustment tells the unit when the transducer
is exposed to zero water (atmospheric) pressure.
When recalibration is desired, hold the transducer
in hand and apply power to the unit. The LCD
screen will display “Level ABC”. Press and hold
for 5 seconds. The LCD screen displays “Input?
External XDUCR”. Perform the following calibration
procedures.
Press 3 times and the LCD screen will display
“Calibrate Zro”. Press or until a character or
number on the display changes.
Press to accept the entry and advance to “Cali­
brate Span”.
Span Adjustment
Span adjustment calibrates the unit to a known wa­
ter pressure (depth). To set:
Submerge the transducer to an exact known
depth. At “Calibrate Span”, the span setting in the
unit's memory will display. Press to increase or
to decrease the value unitl the LCD screen dis­
play equals the actual known depth of the trans­
ducer.
Level Adjustment
Level adjustment tells the unit when to turn the
pump on and off. To set:
From “Level ABC” display, press once and
“Pump Setpt A On” will display. Press to in­
crease or to decrease to the desired level at
which the pump turns on. Press to advance to