Field Maintenance - Cleveland Controls 6650 Instruction Manual

2.4.3 For maximum battery life, the battery should be fully
discharged and recharged every 3 months.
2.4.4 When the battery voltage drops below 10V, the "LO
BAT" symbol lights up on in the display.

2.5 FIELD MAINTENANCE

2.5.1 The Model 6650 Digital Manometer is a solid state
device with no moving parts and no scheduled
maintenance requirements other than the battery
charging procedure described in Section 2.4.
2.5.2 The manometer is factory calibrated and does not
require additional field calibration.
2.5.3 Do not exceed the maximum pressure rating (5 psi).
2.5.4 Use only with compatible media: dry, clean gases that
will not attack polyester, vinyl, silicone, or silicone-
based adhesives.
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Instruction Manual DM-6650.02