MIX PUMP

1. PUMP MOTOR DOES NOT RUN

Power to pump is off.

Supply power to pump.

 

 

Low voltage.

Check for low line voltage.

 

 

Mix pump hose jammed inside black cover/clamp.

Disconnect pump from power source. Remove four

 

cover/clamp thumb screws. Separate cover/clamp

 

halves and remove outer half. Remove jammed hose.

 

Re-install cover/clamp and tighten four thumb screws

 

securely. Allow motor thermal overload to reset. See

 

Sec. 2.5 for hose replacement. Do not use jammed

 

portion of hose.

 

 

Pump motor overloaded.

Allow internal thermal overload to reset; determine

 

overload cause and repair.

 

 

Pressure switch on pump is defective.

Contact your local Stoelting Distributor.

 

 

Defective motor/capacitor

Contact your local Stoelting Distributor.

 

 

Defective toggle switch.

Contact your local Stoelting Distributor.

 

 

2. PUMP OPERATES BUT CYLINDER WILL NOT FILL

NOTE 1: A PROPERLY WORKING PUMP WILL FILL AN 8 OZ. CUP WITH MIX IN ABOUT 9 SECONDS.

NOTE 2: IMMEDIATELY AFTER A "BAG CHANGE" THE PUMP MAY BE UNABLE TO RE-ESTABLISH IT'S PRIME WITH THE SYSTEM AT OPERATING PRESSURE. IN THIS CASE, TURN THE PUMP OFF. DRAW 2-3 PINTS TO REDUCE SYSTEM PRESSURE TO ZERO. TURN PUMP ON. PURGE REMAINING AIR IN MIX BAG AND PICK-UP HOSE.

IMPORTANT: Before connecting the pick-up hose to the mix bag, purge the mix bag of air to the extent possible.

Out of Mix.

Replenish mix supply.

 

 

MIx pump hose kinked inside black cover/clamp.

Follow mix pump hose jammed repair. (See #1 above.)

 

 

Hoses assembled incorrectly.

Refer to diagram for correct hose connections.

 

 

Mix pump hose service life is exceeded.

Reposition/replace mix pump hose. See Sec. 2.5.

 

 

Mix pump hose not connected to freezer.

Connect mix pump hose to freezer.

 

 

Ice crystals in mix.

Completely thaw mix prior to use.

 

 

Mix bag drawn against adapter.

Assure bag is clear of pick-up tube.

 

 

Foreign objects in mix.

Clear blockage. Use fresh mix.

 

 

Mix Check Valve is installed backwards.

Observe flow arrow for proper orientation.

 

 

3. OVERRUN TOO LOW OR NO OVERRUN

 

Overrun setting too low.

Increase overrun setting.

 

 

Air leak.

Tighten all hose clamps.

 

 

Air compressor not pumping air.

Contact local Stoelting Distributor.

 

 

4. OVERRUN TOO HIGH

 

Mix pump hose service life is exceeded.

Reposition/replace mix pump hose.

 

 

Out of mix.

Replenish mix supply.

 

 

Overrun setting too high.

Decrease overrun setting.

 

 

Pick-up leg of mix pump hose is collapsing.

See Section 2.5.

 

 

NOTE: ALSO SEE "2" ABOVE.

 

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