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9
Pumpdown Procedure
- when shutting down unit for an extended period of time, it is recommendable to pump
down unit and store refrigerant in condenser.
1. Frontseat (close) liquid line shutoff valve.
2. Start compressor and run until low-pressure switch cuts out.
3. Shut off unit and close compressor discharge valve.
Water Cooled Condenser
- May require cleaning of scale (water deposits). Condensers are best cleaned with
an inhibited hydrochloric acid solution. Acid will stain hands and clothing and attach concrete. Without inhibitor, it
will attach steel. Cover surroundings to guard against splashing. Vapors from vent pipe are not harmful but take
care to prevent liquid from being carried over by the gases. Warm solution acts more readily but cold solution
applied longer is just as effective.
GRAVITY FLOW METHOD
- Do not add solution faster than vent can exhaust generated gases. When
condenser is full, allow solution to remain overnight, then drain condenser and flush with clean water.
FORCED CIRCULATION METHOD
- Fully open vent pipe when filling condenser. Vent may be closed when
condenser is full and pump is operating. Regulate flow to condenser with supply line valve. If pump is non over
loading type, valve may be fully close when pump is running.
For average scale deposit, allow solution to remain in condenser overnight. For heavy deposits, allow twenty-four
hours. Drain condenser and flush with clean water.
Pulley Alignment and Belt Tension
- It is important have correct pulley alignment and proper belt tension to
prevent fan vibration, excessive belt wear and noise.
Summary of Contents for 50BL Series
Page 1: ... Ÿà Õ µ µ Èß ËÕߪ Õ å Single Package Cooling Units 50BY BL 50BY BL 50BY BL ...
Page 2: ......
Page 13: ... Ÿà Õ µ µ Èß ËÕߪ Õ å 13 Technical Specification ...
Page 14: ... Ÿà Õ µ µ Èß ËÕߪ Õ å 14 Unit Dimensions 50BY008 010 50BY015 020 ...
Page 15: ... Ÿà Õ µ µ Èß ËÕߪ Õ å 15 Unit Dimensions 50BY025 030 50BY040 ...
Page 17: ... Ÿà Õ µ µ Èß ËÕߪ Õ å 17 Electrical Wiring Diagrams ...
Page 18: ... Ÿà Õ µ µ Èß ËÕߪ Õ å 18 Electrical Wiring Diagrams ...
Page 19: ... Ÿà Õ µ µ Èß ËÕߪ Õ å 19 Electrical Wiring Diagrams ...
Page 20: ... Ÿà Õ µ µ Èß ËÕߪ Õ å 20 Electrical Wiring Diagrams ...
Page 21: ... Ÿà Õ µ µ Èß ËÕߪ Õ å 21 Electrical Wiring Diagrams ...
Page 22: ... Ÿà Õ µ µ Èß ËÕߪ Õ å 22 Notes ...
Page 23: ......
