35
Coolant Coolers
Following are instructions for removal and internal
cleaning of coolant/aftercooler.
1) Remove right side panel.
2) Remove 6 screws in right side plenum wall and
remove plenum wall.
3) Remove 8 screws in left side plenum wall and remove
plenum wall.
4) Remove hose from aftercooler discharge (right side)
and plug hole.
5) Disconnect tube from aftercooler inlet (left side).
Loosen tube nut on opposite end of tube and rotate
tube away. Plug hole in aftercooler.
6) Loosen hose nuts 1/4 turn on oil cooler inlet and outlet
hoses.This will allow hose fittings to swivel without
causing kink in hose.
7) Remove 6 screws in cooler support panel to allow
cooler to swing out on hinges.
8) Cover opening that exposes fan and fan motor to
ensure water does not spray onto motors.
9) Before cleaning coolers, check to ensure all
connections are plugged to prevent contamination of
compressor system.
10) After cleaning is complete, reassemble in reverse
order.
11) Replace enclosure panels.
5.9-2 Water Cooled Coolers
Procedure
A periodic inspection and maintenance program
should be implemented for water cooled heat
exchangers.The following steps should be taken.
1. Inspect filters in system and replace or clean as
required.
2. Carefully examine tubes for scale and clean if
necessary. If a cleaning solution is used, be sure to
wash out all chemicals thoroughly with clean water
before returning the compressor to service. After
cleaning, examine the cooler for erosion or corrosion.
5.9 COOLER CORES: CLEANING
Ensure that the compressor is isolated from the
compressed air system by closing the isolation valve
and venting pressure from the drip leg.
Ensure that the main power disconnect switch is
locked open and tagged. (See Figure 5.9-1).
Tools Required
■ Screwdriver
■ Wrench set
■ Air hose equipped with approved O.S.H.A. nozzle.
On units sold outside the U.S.A. consult
local codes.
5.9-1 Air Cooled Coolers
Procedure
Visually check the outside of the cooler cores to be
certain that a complete outside cleaning of the cooler is
required. Frequently, dirt, dust or other foreign material,
may only need to be removed with an air hose to remedy
the problem.
When the cooler is covered with a combination of
oil, grease or other heavy substances that may
affect the unit’s cooling, then it is recommended
that the cooler cores be thoroughly cleaned on the
outside.
If it is determined that the compressor operating
temperature is higher than normal due to the internal
passages of the cooler cores being restricted with
deposits or foreign material, then the cooler should be
removed for internal cleaning.
Strong cleaners can harm
aluminum cooler parts. Follow cleaner
manufacturer’s instructions for use.
Wear appropriate safety equipment.
CAUTION
To Next Page
Loading...
Need help?
General
