Brookfield DV-II+ Digital Viscometer - Manual (Page 48)

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Appendix J - Fault Diagnosis and Troubleshooting
Listed are some of the more common problems that you may encounter while using your Viscom-
eter.
Spindle Does Not Rotate
1. Incorrect power supply
• Check - must match Viscometer requirements
2. Viscometer not plugged in
• Connect to appropriate power supply
3. Power switch in “off” position
• Turn power switch on
Spindle Rotates Eccentrically
1. Viscometer is not level
• Adjust the laboratory stand
2. Spindle not screwed securely to coupling
• Tighten
3. Dirt in spindle or Viscometer coupling
• Clean
4. Bent spindle
• Check other spindles - replace any that are bent
• If all rotate eccentrically, contact Brookfield Engineering Laboratories, Inc. or your
Brookfield dealer for repair
Note: Maximum permissible runout is 1/16 inch (1.6 mm) at end of spindle.
5. Spindle coupling bent
• Contact Brookfield Engineering Laboratories, Inc. or your Brookfield dealer for
repair
No Display Reading
1. Underrange “—” (in cP or SS) when % torque is below zero
• Change spindle and/or speed
• Perform an Auto Zero