Maintenance - Champion CRN Series Instruction Manual

3.0 MAINTENANCE

3.1 Condenser coil
A. Air-cooled - clean off accumulated dust and dirt
monthly or as necessary in dirty environments.
B. Water-cooled - clean strainer monthly, more often if
required. Shut off water, remove small plug to relieve
pressure, then remove large plug to remove strainer.
Clean strainer and replace.
125 thru 150 scfm Models
Bowl
O-ring
Timer Drain Valve - Standard
3.2 Moisture Separator/Oil Removal Filter
NOTE: Prepackaged maintenance kits are available that
include all necessary filter and timed drain valve
components. Maintain maximum performance and
efficiency with Genuine Parts. See page 18 for ordering
information.
When to replace the Separator/Filters
Replace filter element when pressure drop across
dryer is excessive or annually.
Dryers have the option of one or two stages of
filtration. The directions for servicing either filter is
identical.
When removing liquids at rated flow conditions, an
increase in pressure drop will occur as the separator/
filter elements become loaded with solid particles.
Procedure for Separator / Filter Element
Replacement 125-500 scfm models
THIS FILTER IS A PRESSURE CONTAINING
DEVICE. DEPRESSURIZE BEFORE SERVICING. If filter has not
been depressurized before disassembly, an audible alarm
will sound when the bowl begins to be removed from the
head. If this occurs, stop disassembly, isolate and
completely depressurize filter before proceeding.
8
Separator Element
or Optional Oil Removal
Element
Wave
Spring
1. Isolate dryer (close inlet and outlet valves if installed)
or shut off air supply.
2. Depressurize filter by slowly opening manual drain
by-pass valve.
3. Remove bowl
a. For 125 through 150 scfm models - bayonet
mount - push bowl up, turn bowl 1/8th turn to
your left, and pull bowl straight down
b. For 200 through 500 scfm models - threaded
bowls - unscrew bowl from head using hand,
strap wrench or C spanner.
4. Clean filter bowl
5. Replace moisture separator element.
a. Replacing complete Grade B element.
1) Pull off old element and discard
2) Make certain o-rings on male of replacement
element adaptor are in place and push
element into filter head.
NOTE: Do not handle Oil Removal Filter elements by
outside foam cover. Handle by bottom end cap only.
6. After making certain that o-ring inside top of bowl
(and on bayonet mount heads, wave spring) are in
place, reassemble bowl to head.
NOTE: Make certain o-ring is generously lubricated. (Use
lubricant provided)
NOTE: Wave spring ends should be pointed down to
prevent the wave spring from interfering with
reassembly.
200 thru 500 scfm models
Timer Drain Valve - Standard with I-Controller Level 2
Demand Drain - I-Controller Level 3 Only
Separator Element or
Optional Oil Removal Element