Specifications

ManualsBrandsYork ManualsWater DispenserYT

COOLER AND CONDENSER

The major portion of maintenance on the condenser and

cooler will deal with the maintaining of the water side of

the condenser and cooler in a clean condition.

The use of untreated water in cooling towers, closed

water systems, etc. frequently results in one or more of

the following:

1. Scale Formation

2. Corrosion or Rusting

3. Slime and Algae Formation

It is therefore to the benefit of the user to provide for

proper water treatment to provide for a longer and more

economical life of the equipment. The following recom-

mendation should be followed in determining the condi-

tion of the water side of the condenser and cooler tubes.

1. The condenser tubes should be cleaned annually or

earlier if conditions warrant. If the temperature dif-

ference between the water off the condenser and

the condenser liquid temperature is more than 4°

greater than the difference recorded on a new unit it

is a good indication that the condenser tubes require

cleaning. They should be cleaned as instructed on

pages 58 and 59 of this manual.

2. The cooler tubes under normal circumstances will

not require cleaning. If however the temperature dif-

ference between the refrigerant and the chilled wa-

ter increases slowly over the operating season, it is

an indication that the cooler tubes may be fouling or

that there may be a water by-pass in the water box

requiring gasket replacement.

PURGE UNIT

Every Three Months

1. Change the purge unit dehydrator.

a. If the unit is operating;

1) When the purge unit is in the drain cycle, close

the valve in the high pressure oil supply line

and allow the unit to complete the drain cycle.

2) Close condenser gas and oil return valves and

replace the dehydrator.

3) Open all valves to return the purge unit to

normal operation.

Annually

1. Clean and inspect all valves which are part of the

purge unit system.

2. Drain and flush the oil and refrigerant from the purge

unit shell.

a. Before flushing remove the float assembly from

the purge unit shell.

b. Disconnect the oil line from he bottom of the

purge unit shell.

c. To clean - flush refrigerant from the top of the

purge unit shell and let the refrigerant drain from

the bottom through the oil line cormection.

d. After a complete flushing, replace the float

assembly and the oil drain line.

3. Clean the following orifice.

a. One (1) orifice in the liquid line feed to the cool-

ing coil.

b. Purge unit exhaust orifice.

4. Inspect the foul gas inlet check valve.

OIL RETURN SYSTEM

1. Change the dehydrator in the oil return system semi-

annually or earlier if the oil return system fails to

operate.

2. When the dehydrator is changed the nozzle of the

eductor should be checked for any foreign particles

that may be obstructing the jet.

ELECTRICAL CONTROLS

1. All electrical controls should be inspected for obvi-

ous malfunctions.

2. It is important that the factory settings of controls

(operation and safety) not be changed. If the set-

tings are changed without YORK’s approval the war-

ranty will be jeopardized.

3. A 5-11 year life battery is part of the RTC-Real Time

Clock. To replace refer to Section 2.

P.O. Box 1592, York, Pennsylvania USA 17405-1592 Subject to change without notice. Printed in USA

Form 160.48-01 (1096)

Supersedes: Nothing