Ingersoll-Rand SSR M11, Operation And Maintenance Manual

OPTIONS

26

M4  M5,5  M7,5  M11

SERIAL NO. VALIDITY

Refrigerant Compressed Air Dryers covered by this manual:

BI–1
BI–2
BI–3
BI–4
BI–5

Serial number
M4 : all serial numbers,
M5.5 : 2122032 onwards,
M7.5 : 2143905 onwards,
M11 : 2163617 onwards.

PURPOSE OF THIS DRYER

The compressed air refrigerant dryer condensates water and oil
vapours in the compressed air by cooling it to close to the point of
freezing.

The water and oil condensate is drained automatically.

This dryer is designed for industrial use indoors.

FUNCTION

See the flow diagram on page 30

Compressed air circuit

The warm and moist compressed air first flows through the evaporator
in which refrigerant evaporates, thus removing heat from the
compressed air.

The compressed air cools down and the water and oil vapours in it
condensate.

Next, the cold air flows through a water separator, where the
condensate is separated form the compressed air.

Finally, the dried compressed air leaves the dryer.

Refrigerant circuit

The refrigerant that is evaporated in the evaporator is sucked in by the
compressor and compressed.

The compressed refrigerant vapour condensates in a compressed air
cooled condenser where the refrigerant releases the remaining part of
the absorbed energy to the cold dried compressed air.

The liquid refrigerant flows through the liquid receiver and the
filter/dryer to the constant pressure valve.

The constant pressure valve regulates the refrigerant flow to the
evaporator such, that the dryer can not freeze up and a constant dew
point is maintained, independant of the compressed air load.

Installation

Do not block the ventilation grills of the dryer.

Start

Wait for 2 hours before switching on the dryer so refrigerant and
lubricants can settle in the dryer.

Start the compressed air compressor.

The dryer starts with the compressor.

An acceptable air quality will be reached within minutes.

During operation

Regularly check the position of the dew point indicator. The pointer has
to be in the green zone. If it is in the red zone, see the trouble shooting
section on page 27

Shut–down

The dryer is stopped by shutting down the compressor.

Wait a minimum of 10 minutes before switching on the dryer again.

Maintenance and repair, particularly of the refrigerant circuits, is only
to be performed by authorised, trained and skilled employees.

MAINTENANCE

1. Use only the appropriate tools for maintenance and repair.

2. Use genuine spare parts only.

3. Maintenance is only to be performed when the air dryer is shut down
and depressurized and when the main power is turned off.

4. Only use a damp cloth to clean the parts.

5. Proceed carefully during maintenance and repair. Prevent dirt from
entering by covering parts and openings with a clean cloth, paper or
tape.

6. Never leave tools, loose parts or cleaning rags in or on the air dryer.

7. Use a pressure gauge without hose to measure suction pressure
to prevent unnecessary loss of refrigerant 

Refrigerant loss may adversely influence the dryers performance.

USER MAINTENANCE

1. Brush or blow the condenser clean as soon as you notice any
deposit of dust.

2. Keep the dryer clean.

3. Check and clean the internal parts of the water separator.

With very dirty and unfiltered compressed air systems the necessary
cleaning interval may increase to twice per month.

With a time or level controlled condensate drain, first remove the piping
at the bottom of the water separator.

Remove the bowl of the water separator by removing the retaining
screws.

Clean the inside with tap water to remove dirt that may be stuck.