Scheduled Maintenance; Introduction; Refrigerant Condenser; Condensate Discharge System - Ingersoll Rand Nirvana NVC2000 A400 Manual Del Operador

9.1 INTRODUCTION

Ingersoll Rand Nirvana™ Cycling 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.
component inspection and service at regular intervals to obtain
maximum performance from your dryer.

9.3 CONDENSATE DISCHARGE SYSTEM

9.3.1

SOLENOID DRAIN (STANDARD)

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 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.

9.3.1.1 CLEANING INSTRUCTIONS - SOLENOID DRAIN

• Be sure dryer is depressurized or isolation valve is closed.
• Disconnect drain body from filter stop.
12

9.0 SCHEDULED MAINTENANCE

Ingersoll Rand recommends
RETAINER NUT
SPRING WASHER
WASHER
D.I.N. UNIT SOLENOID
PLUNGER TUBE ASSY.
THREADED FLANGE
GASKET
PLUNGER W/ SPRING
ASSEMBLY
ORIFICE CUP
BEVELLED WASHER
STRAINER
BODY
FIGURE-4 SOLENOID DRAIN ASSEMBLY
Nirvana Cycling Refrigerated Dryer Models 2000-2400
ingersollrandproducts.com

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.
• 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
counterclockwise 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.
PROFILE GASKET
ELECTRICAL CONNECTOR
APPLIANCE SOCKET
SEAL
WASHER
CABLE GLAND
SOLENOID VALVE
SCREW