General Information --- Section 1
The Executive 2005
23
Grey Water - Term associated with the waste water holding tank. Water from the sink drains, the
shower and the washer/dryer (if equipped) go into this tank.
House Battery - Powers 12 Volt lights and accessories inside motorhome.
LED - (Light Emitting Diode) Indicator light.
Low Point Drain - The lowest point in the plumbing. Drains are placed here so that water will drain
out of the lower end of the motorhome. These drains must be closed when you fill the water tank.
OHM - A unit for measuring electrical resistances.
Ohm’s Law - Express the relationship between Volt (E), amperes (I) in an electrical circuit with
resistance (R). It can be expressed as follows: E = IR. If any two of the three values are known,
the third value can be calculated by using the above formula.
Pounds Per Square Inch Gauge (psig) - Pressure measured with respect to that of the atmosphere.
This is a pressure gauge reading in which the gauge is adjusted to read zero at the surrounding
atmospheric pressure. It is commonly called gauge pressure.
Purge - The initial blast of air (decompression) from the air dryer purge valve at the beginning of the
air compressor.
Purge Cycle - The time during which the air dryer is undergoing purge and regeneration. This
cycle starts at the beginning of the compressor unload cycle and normally ends well before the
beginning of the compressor load cycle.
Regeneration - The mild backflow of air through the air dryer and out the purge valve that begins
immediately after the purge and lasts normally 10 to 15 seconds. This backflow of air, from the
air system and through the air dryer, removes moisture from the desiccant cartridge and pre-
pares the air dryer for the next compressor load cycle.
Roadside - This refers to the side of the motorhome which faces the road when it is parked. Often
called the off-door side or the driver’s side.
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