Wheaton UniSpense PRO - Troubleshooting: Unit Operation Issues; Unit Not Operating or Motor Not Rotating; Pump Head and Dispensing Problems; Motor Speed Inconsistencies

WHEATON UniSpense
®
PRO Peristaltic Pump
WHEATON | 800.225.1437 (U.S. & Canada Only) | 856.825.1100 | www.wheatonsci.com| P/N 50099073 Rev. 2/2/10 Lit. No.8734
18
Unit will not operate:
Cause: Fuse blown.
Remedy: Replace fuse with proper size and type. (see ‘Fuse Replacement’)
Cause: Supply voltage low or at zero.
Remedy: Check house receptacle with a voltmeter.
Cause: On/Off power switch in "off" position.
Remedy: Switch power switch to "on" position.
Motor runs but pump head will not turn;
Cause: Pump head not properly engaged with drive shaft.
Remedy: Realign pump head with drive shaft (see ‘Initial Startup and Operation).
Switch on but motor fails to rotate;
Cause: Pump speed set too low.
Remedy: Increase pump motor speed as required.
Cause: Motor control board defective.
Remedy: Replace defective board.
Cause: START Key not pressed.
Remedy: See ‘Unit Features and Component Identification’ for keypad and display
operation.
Unit will not cycle automatically:
Cause: Multiple doses are not entered.
Remedy: See ‘Preparing for Batch and Single Dose Dispensing.
Cause: Dispense cycle not initiated.
Remedy: START key must be pressed to initiate the dispense cycle.
Pump head turns, but unit will not pump;
Cause: Tubing assembly incorrectly installed.
Remedy: Tubing must be installed as described in section ‘Initial Startup and Operation’.
Cause: Tubing assembly worn or split.
Remedy: Replace tubing assembly.
Motor fails to maintain constant rotation speed;
Cause: Motor control board defective.
Remedy: Have defective control board replaced.
Cause: Drive motor defective.
Remedy: Have defective motor replaced.