Varec 2500, Installation And Operation Manual

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2500 Automatic Tank Gauge
44 Installation and Operations Manual
1. Station an observer at the gauge head.
2. Begin filling the tank to raise the float several feet (about three feet or one meter) from
the bottom.
Caution Do not release the checker knob and allow the springs to return the mecha-
nism
. Over time the springs will break and jam the gauge.
Caution Do not turn the operation checker knob on systems that have no float and that
are directly connected to a floating roof.
3. Turn the operation checker knob on the front of the gauge head of non-crank types a quar-
ter-turn clockwise to lift the float slightly. Check that the display registers the movement.
Caution For hand crank gauge heads, do not disengage the crank while the float is above
the surface of the liquid. Do not allow the float to free fall. Damage to the system may
result.
4. For hand crank gauge heads, engage the crank to make the check, then disengage the
crank. To engage the crank, hold the ratchet pawl, in the disengaged position (upward) and
push in on the hub of the crank assembly. To disengage the crank, make certain the float
is on the surface of the liquid, by rotating it slowly until the counter stops. Do not continue
to crank!
5. To disengage, hold the ratchet pawl lever up, pull outward on the crank handle hub until
the gear is disengaged. Then push the ratchet pawl lever down.
Note If the tape becomes slack with the float on the surface, the tape may slip off the
elbow pulley, the tape storage sheave, or the tape keeper. If this occurs, refer to
Chapter 9, Troubleshooting on page 99.
6. Continue filling the tank to the desired level.
7. Hand gauge the product and compare the measurement with the display. If they do not
coincide, refer to Section "Reset the Counter" on page 40.