Ingersoll-Rand EP 20-ESP, Руководство оператора/инструкция по эксплуатации и перечень запасных частей

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3. Lower the motor support plate by loosening the
jackscrew locknut and turning the jackscrew counter-
clockwise. Be sure to back the jackscrew down as far
as possible since the belts will stretch after initial run-
in, and the motor support will be lowered as a result.
Retighten the locknut.
4.7 BELT TENSION
This unit has been designed with a unique self ten-
sioning system for the drive belts. There is no adjust-
ment required to insure proper belt tensioning. Be
sure to use only Ingersoll-Rand Genuine parts to
assure correct belt tension.
4.8 SHAFT SEAL REPLACEMENT
There are two lip type seals on the compressor. They
are wearable parts and should be replaced at
8,000 hour intervals. While it is advisable to have
your local Ingersoll-Rand Distributor or Air Center per-
form this work, the task can be accomplished by a
good mechanic following these instructions.
Before beginning any work on the compressor,
open, lock and tag the main electrical disconnect
and close the isolation valve on the compressor
discharge. Wait 2 minutes after stopping to allow
internal pressure to dissipate. Vent residual pres-
sure from the unit by slowly unscrewing the
coolant fill plug one turn. Unscrewing the fill plug
opens a vent hole, drilled In the plug, allowing the
pressure to release to atmosphere (See Figure
4.3-1). A slight mist or oil droplets may be visible
during venting. Do not remove fill plug until all
pressure has vented from the unit. Also vent pip-
ing by slightly opening the drip leg valve. When
opening the drain valve or removing the coolant
fill plug, stand clear of the valve discharge, wear
work gloves and appropriate eye protection.
SPECIAL TOOLS
A clean work bench
REPLACEMENT PARTS
20-25 HP Units
Shaft seal kit (42370353)
Loctite® 242
Loctite® 609
Loctite® 515
30 HP Units
Shaft seal kit (39699418)
Seal retainer O-ring (95358024)
Loctite® 609
4.6 DRIVE BELTS
Insure that the compressor is isolated from the
compressor air system by closing the isolation
valve and venting pressure from the drip leg.
Insure that the main power disconnect switch is
locked open and tagged.
If installing or removing the belts on a new unit at start-
up, the motor support shipping bolt must first be
removed. This bolt is only used to brace the motor dur-
ing shipment and will not be reinstalled once the belts
are put into place. Locate the motor support shipping
bolt as shown in Figure 2.7-1 and remove. Locate the
motor support jackscrew on the underside of the base.
Loosen the locknut and turn the jackscrew counter-
clockwise to set the motor down onto the belts. Be sure
to back the jackscrew down as far as possible since the
belt will stretch after initial run-in, and motor support will
stretch after initial run-in, and the motor support will be
lowered as a result. Retighten the locknut.
REPLACEMENT PARTS
Belts (See Recommended Spare Parts Section 7.0). Be
sure to use only Ingersoll Rand Genuine parts to
assure proper belt size and length. Incorrectly sized
belts can lead to overloading of bearings and eventual
airend or motor failure.
DISASSEMBLY
Belt tension is maintained due to a pivoting motor sup-
port. The weight of the motor holds the belt tight.
1. Remove the cooler box corner from the airend side
of the machine.
2. Lift the back of the motor support plate by turning the
jackscrew (located on the underside of the base) clock-
wise. Retighten the locknut.
3. Remove belts from the airend sheave and the motor
sheave.
INSTALLATION/INSPECTION
Inspect sheave grooves for foreign material or rubber
build-up. Clean and degrease sheaves before installing
drive belts to insure long belt life.
1. Lift the back of the motor support plate by turning the
jackscrew (located on the underside of the base) clock-
wise. Retighten the locknut.
2. Install belts on the airend sheave and the motor
sheave. When installing a new belt, do not pry or force
the belt over the sheave grooves.