Ingersoll-Rand D1700IN, Operator'S Manual

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14 Non-cycling Refrigerated Dryer
MODELS D1700IN, D2040IN, D2720IN, D3400IN, D4080IN
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9.1 INTRODUCTION
Ingersoll Rand noncycling refrigerated air dryers require
little maintenance. These dryers utilize hermetically sealed
compressors which do not require any lubrication. Fan
motors require lubrication at both oil ports every six months.
The condensate drain requires annual replacement of the
service unit. Ingersoll Rand recommends component
inspection and service at regular intervals to obtain
maximum performance from your dryer.
9.2 REFRIgERaNT CONDENSER
For standard dryers, regular inspection and cleaning of the
condenser is recommended. Ingersoll Rand dryers may
be equipped with an optional ambient air filter designed
to protect the condenser from dirt and debris that can
accumulate on the condenser. For proper operation with
this option, it is imperative that this filter be inspected and
cleaned on a regular basis. Annual replacement of the filter
is recommended. For applications where excessive dirt, dust
or debris is encountered, more frequent inspection and
cleaning may be required.
9.3 CONDENSaTE DISCHaRgE SYSTEM
Maintenance recommendations
On a minimum of a monthly basis, the operation of the
drain should be checked. Periodically, the drain should be
removed and cleaned to ensure no debris from the system
is trapped inside. Ingersoll Rand non-cycling dryers are
equipped with a drain isolation valve, enabling the valves to
be cleaned during dryer operation after the drain isolation
valve has been manually closed. The drain valve is located
near the solenoid valve and requires a quarter turn to isolate
the drain from system pressure.
9.3.1 CLEANING INSTRUCTIONS - SOLENOID DRAIN
Be sure dryer is depressurized or isolation valve is
closed.
Disconnect drain body from filter stop.
Loosen connector screw to allow the electrical
connector assembly to be removed from the D.I.N.
unit solenoid.
Remove retainer nut and separate the valve body
from the D.I.N. unit solenoid.
Unthread the plunger tube assembly in a counter-
clockwise direction until plunger separates from valve
body.
Clean beveled washer, thread gasket, spring assembly
and strainer with soap and water. Do NOT use
solvents of any kind, as failure to the seals will occur.
Be especially careful to clean the center brass orifice
and the rubber gasket orifice on the orifice cup with a
straight pin.
Reassemble all drain components after the drain has
been cleaned and inspected. Reposition the orifice
hole on the rubber gasket of the orifice cup in the line
and closest to the arrow indicated on the valve body.
Reassemble valve and install in reverse order as
described above.
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9.0 SCHEDULED MaINTENaNCE