E-Series Technical Manual
13
Cambridge Air Solutions
MAINTENANCE:
Frequency of Maintenance
Spring Start-Up
1. Clean any scale or debris in the sump tank and sump
pump.
2. Remove the distribution header and clean out the
distribution holes that supply water flow to media
pads. Inspect all wire connections for discolored and/
or burned wires. Replace where necessary.
3. Check unit for proper grounding.
4. Inspect media pads and replace per manufacturer’s
recommendations.
5. Inspect and lubricate bearings. Use correct and
adequate lubrication. Keep grease lines, connectors
and lubrication tools clean and free of contamination.
6. Inspect and clean fan housing and impeller (no high
pressure cleaners are to be used).
7. Check and adjust the following items:
a. Open make-up water valve allowing sump to fill
with water and check for leaks.
b. Check float for operation and adjust to maintain
water level at 3-1/4" depth.
c. Check the sump water level is ½” below the
overflow level and the low water level switch is
closed.
d. Clean any debris around the overflow intake.
e. Fully close bleed valve then fully open it
counting the revolutions. Set to 50% open.
f. Check after the first month of operation and
adjust if necessary to prevent solids from
forming on the exchanger.
g. Inspect media pads and replace per
manufacturer’s recommendations.
1)
Inspect at bottom of heat exchanger for
complete water coverage. Should see a
steady flow of water across the complete
exchanger
8. Follow ‘Initial Start Up’ procedures.
Monthly and Quarterly Maintenance
1. Inspect sump pump and water level. Adjust float
valve if necessary.
2. Check media pads for scaling and adjust bleed valve
as required.
3. Inspect for water carryover and leaks.
4. Inspect air flow making sure no outside air is
bypassing media pads.
5. Check the belts and sheaves. Align as needed.
Always replace all the drive belts, even if only one
belt is worn. Replace the sheave if the grooves show
signs of wear.
6. Verify the proper belt tension and drive alignment.
7. Clean the housing and wheel.
8. Check all bolts, nuts and set-screws are tightened.
Annual Shutdown for Winterizing
1. Disconnect the power supply.
2. Shut off manual water make-up valve to unit.
3. Drain sump. Pump removal is not necessary.
4. Clean any scale or debris in sump and sump pump
area.
