Varec, Inc. 61
Warning Electrostatic Charge! Worker activity and worker clothing may accumulate
electrostatic charges on the body of a worker. Care should be used in flammable
environments to avoid this hazard. The mechanical connections between the guide cables,
float, tape, and gauge head provide an electrical resistance path to ground that is
adequate for the safe electrical drain of electrostatic charges that may accumulate in the
tank and product.
1. If the gauge head is oil-filled, drain the oil.
Warning Broken motor spring parts can cause injury! Whenever the back cover of the
gauge head is removed, stand to one side as the last bolt is removed. If the motor spring
is broken, the broken pieces may cause injury when the cover is removed.
2. Remove the sixteen back cover bolts, back cover, and back cover gasket
(1).
3. If accessory equipment is attached to the gauge head, disconnect and remove.
4. Attach the installation crank.
5. Open an inspection hatch or manhole for access to the float.
Warning The rapid unwinding of the motor spring could result in the crank spinning and
striking the operator. Use a firm grasp on the crank. Tighten thumbscrew to lock tape
storage sheave before releasing grip.
Caution Allowing the float to fall to the tank floor will likely damage the float.
Do not allow the float to fall to the tank floor.
6. Pull the float to the top of the tank while maintaining tape tension, so that the tape feeds
slowly back into the gauge head.
7. Secure the thumbscrew.
• For Standard Model, tighten thumbscrew to lock the tape storage sheave.
(see Figure 3-1, item 3). For the Cassette Model, align the locking pin with the
keyhole.
8. Secure float to top of tank with secondary wire.
Caution Allowing the float to fall to the tank floor will likely damage the float.
Do not allow the float to fall to the tank floor.
9. Disconnect the perforated tape from the float connector.
10. Attach a pull string to the tape to facilitate installing a new tape.
11. Loosen the thumbscrew and slowly retract the tape into the gauge head.
12. Unwind the motor spring onto the motor storage sheave
(Figure 9).
Caution When unsecured, the perforated tape can retract up into the conduit where it
cannot be reached. If you remove the gauge head, secure the end of the tape so it cannot
retract up into the conduit. Use care to not kink or bend the tape.
13. You can now remove the gauge head from the conduit and complete the rest of this disas-
sembly at the workbench.
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