EN-14
Kendall SCD 700 Series
Fan Filter and Ventilation
CAUTION:
Unplug the Controller before accessing the fan filter.
The fan filter must be kept clean to ensure continued trouble-free operation. The Controller should never be run
without the fan filter in place. Clean or replace the filter when required . See instructions in the General Disassembly/
Reassembly Section.
During system use, obstruction of the fan cover and vents should be avoided. Free flow of air is necessary to prevent
overheating and premature component failure.
Fuses
CAUTION:
Unplug the Controller before replacing the fuse(s).
Blown fuses should only be replaced by those indicated on the power supply board near the location of the fuses
at the AC inlet. Use only 1.6 A, 250 VAC, 5x20mm Slo Blo fuses. The use of fuses that have the Semko and/or VDE
marking is preferred. If a fuse blows a second time, it should be presumed that the Controller is defective and
requires further service. Please contact your service center. Fuses are not accessible from the outside of the controller.
Refer to the Disassembly/Reassembly procedures later in the manual. The fuses are located on the power supply
board as part of the power inlet module under the fuse cover.
Electrical Safety CAUTION:
Be sure the Controller is disconnected from the AC power source before any
disassembly. A potential SHOCK HAZARD exists when the front cover is removed even with the unit turned off.
Note:
The power supply cord/plug serves as the electrical supply mains disconnect device.
To facilitate electrical safety testing, the controller has an equipotential lug, located on the back of the device
opposite the power cord. There are no other grounded exposed metal parts. Power cord resistance should not
exceed 0.1 ohm. If ground resistance exceeds this value or the insulation integrity of the unit has been compromised
through mechanical damage, the Controller should be returned to a service center for testing and repair.
Suggested Preventative Maintenance Schedule
Proposed Maintenance
After Any Repair Once Per Year
Inspect and Clean Fan Filter
X
As Required
Verify Transducer Calibration (Test Modes T3 and T4)
X
X
Electrical Safety Tests
X
X
General Function Test (Test Mode T2)
X
Alarm History
The Kendall SCD 700 Series Compression System stores the ten most recent alarm codes for use in troubleshooting
devices returned from use. There is a test access mode, discussed later in this manual that describes exactly how to
use the feature.
700 SERIES CONTROLLER CLEANERS
Chemical component (with approximate
concentrations)
Commercial
Example
0.5% bleach solution
Dispatch™*
70% Isopropanol alcohol
Generic
0.37% o-Phenylophenol
Precise™*
0.15% dimethyl benzyl Ammonium Chloride, 0.15%
dimethyl ethylbenzyl Ammonium Chloride
Spray Nine™*
7.35% Hydrogen Peroxide, .023% Peracetic Acid
Sporgon™*
3.4% Glutaraldehyde
Cidex™*
Dodecylbenzene Sulfonate, Coconut Diethanolamide
diluted per instructions
Manu-klenz™*
Cleaning
CONTROLLER CLEANING
The Controller enclosure can be cleaned with a soft cloth
dampened with water or a mild detergent. To sanitize the
device, apply cleaning agents with a cloth or wipe. Avoid
excessive spraying, especially in the areas of the connection
ports on the back of the device. If any liquid enters the
ports, then internal component damage will likely result.
The table at right provides optional cleaners and their
chemical components.
