Brownie’s YP25DF, Operator'S Manual

11

PURIFICATION SYSTEM

Explanation:

The YP25DF and the YP35DF compress air in three stages. Air leaving the outlet (discharge) of each stage is at an
elevated temperature. The air passes through cooling tubes and the temperature is reduced prior to entering the inlet
of the next stage. As this air cools, moisture is released and accumulates in the condensate traps (separators). This
process of moisture removal is based on 

dew point

. Dew point is the total moisture saturation point of air at a

specific temperature. The higher the temperature, the greater the amount of suspended moisture. When air leaves
the last or final separator and enters the purification cartridge it is at approximately 15 deg F above the ambient
temperature. This temperature is referred to as 

inlet temperature

. Higher inlet temperatures reduce the life of the

purification cartridge.

As an example, an ambient temperature of 90 deg F will yield an inlet temperature of 105 deg F. The life of the
purification cartridge at this temperature will be significantly less than a cartridge processing air at an 80 deg F
ambient temperature, which yields a 95 deg F inlet temperature.

The Yacht Pro purification system will process 15,000 cu ft of CGA Grade “E” Air at an inlet temperature of 80 deg F.
At this inlet temperature the purification system cartridges should last approximately 80 hours in the YP25DF, and
approximately 70 hours in the YP35DF.

The Yacht Pro Purification system uses three chemicals to process the air. The first chemical is molecular sieve
13x, and is the desiccant or moisture/oil remover. The second chemical is a catalyst called hopacolite, that converts
carbon monoxide to carbon dioxide. The third chemical is activated carbon which removes taste and odor. The
X53240 cartridge uses a Lifeband ™ to indicate usage and replacement (see page 21). The cartridge Lifeband ™
should be inspected prior to each use to determine whether the cartridge needs to be replaced. The hours the
cartridge is used and replaced needs to be recorded in the system log.

The Yacht Pro purification cartridges have a shelf life of two years in the original sealed package and a maximum
installed life of six months.

Spare cartridges should be kept in a cool, dry location. The boxes must not be crushed and the packaging must not
be punctured.

WARNING:

Do not use cartridges that have expired, have punctured packaging or that are

damaged in any way!

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Lubrication Specifications

Use

Lubricant

O-rings, rubber and plastic parts,

White Petroleum DAB9 # N19091 or WEICON WP 300

filter housing threads

White part # N19752

Sealing Rings

Universal grease

Paper Gaskets

Apply silicone compound on both sides (WACKER
silicone compound part # N 18247) before assembly

Bolts, nuts, studs, valve parts, CU gaskets and pipe

Compounds with Copper or MoS² additives (WEICON

connectors (threads, cap nuts, compression rings)

ANTI-SEIZE AS 040 P part # N 19753)

High Temperature connections

Temperature resistant compound (WACKER

(valve heads / cylinders)

silicone compound, part # N 18247