Finish Thompson Little Cooler User Manual

Page 10

PROBLEM: Unit will not turn on
POSSIBLE CAUSES:
 Improper electrical hook-up. Verify proper installation of electrical supply.
 No power to the unit. Check main circuit breaker and/or electrical supply to the unit.

PROBLEM: Fan runs, but not the pump.
POSSIBLE CAUSES:
NOTE: If the liquid temperature from the radiator exceeds 150

F, a safety temperature switch

will shut down the pump of the Little Cooler. The fan will continue to run to assist cooling the
liquid. Once the liquid cools to below 100

F, the pump will turn back on.

 Coolant level is low in the reservoir. Top off to proper level.
 Ambient air temperature too high. Verify proper ventilation of the unit.
 Heat exchange system dirty. Clean the finned surfaces of the radiator.
 Pump components melted from being run dry. Replace pump assembly.
 Pump’s motor is defective. Replace motor.

PROBLEM: Distillation unit shuts down, but the Little Cooler is still running.
POSSIBLE CAUSES:
 Improper installation of Little Cooler. Verify that the distance from distillation system is

within allowable limits and the plumbing to the Little Cooler is correct.

 Coolant level is low in the reservoir. Top off to proper level.
 Leak(s) in piping. Verify tight plumbing connections.
 Build-up of debris in Y-strainer. Clean the screen in the Y-strainer.
 Defective or dirty flow switch in distillation unit. Service according to the distillation unit

owner’s manual.

PROBLEM: Vapors escaping from the discharge hose of the distillation system.
POSSIBLE CAUSES:
 Solvent’s boiling point too low. Do not process solvents with boiling points below 150F.
 Flow switch in distillation system defective and improper coolant flow. Service the flow

switch and determine cause of low coolant flow.

 Little Cooler turned off prematurely. Allow the Little Cooler to run for an additional hour

after the distillation unit is shut down.

 Vapor condenser in distillation unit plugged (scale/mineral deposits, debris, etc.) Clean or

replace the distillation unit’s condenser.

COMMON SPARE PARTS:

PART # DESCRIPTION

PART

# DESCRIPTION

A101299

Pump Assembly

J101235

Safety switch (TAS1)

J101444 Pump

motor

J101210

Radiator

J101212

Fan blades

M101103

Reservoir tank

J101558

Fan motor

J101431

Fill hole cap

J103909

½” H x ½” H hose barb fitting