Liquid Level Indicator
52 Installation and Operations Manual
Oil Recommendations for Oil Seal Accessory Units
GENERAL SERVICE
• Low pour point, food grade, water white, mineral oil.
SERVICE BELOW 25 °F (-4 °C)
• Automotive antifreeze compatible with aluminum and water (50/50 mix)
Caution These oils may not be compatible with edible oils and potable liquids. Use prod-
uct compatible substitutes for tanks holding products for human or animal consumption
or products that may react chemically with the oil.
Inspection
It is recommended that the first inspection after the unit has been placed in service be made
at the end of the first thirty-day period. Oil sealed units should be inspected immediately after
being placed in service and then daily for the first week. Subsequent inspections should be
made every 90 days (Table 8). The user may adjust the schedule for his own convenience and
safety, depending upon the product. Varec maintenance service contracts are available for 90-
day, 6-month, 1-year and 5-year periods at substantial savings.
Troubleshooting Common Problems
Friction is a common problem that affects indicator accuracy. Some liquids produce corrosion
in the mechanism. Periodic inspection and maintenance provided by a Varec service contract
Table 8: Suggested Periodic Maintenance Schedule
Routine 90 Days 6 Months 1 Year 5 Years
Operation check X X X
Guide cables X X
Float X X
Lubricate X
Leak check X X X
Change oil X
Calibration X X
Corrosion check X
Sediment check X X X
Deformation check X X X
Refurbish X
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