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.