Maintenance - Universal Analyzers 1095E Instruction Manual

Maintenance

MAINTENANCE SCHEDULE
DAILY
1. Check Alarm Status for normal operation
2. Check Chiller Temperature indication
CH1 4°C ± 1°C
Online Freezer - Cold
Offline Freezer - Warm
3. Check Sample flow rate through chiller to be normal < 5 l/min
WEEKLY
1. Check Sample Pump for Normal Operation – 5-8 l/min @ <2" HG @ 10 PSIG
Pump Diaphragm replacement dependent on Load, Ambient Temperature and Sample Composition
2. Check Sample Filter by observing color and noting any flow restriction
Change as required
BIANNUALLY
1. Replace Tubing on Peristaltic Liquid Pump
2. Replace Diaphragm and Gaskets on Sample Pump
3. Check Pressure setting of Back Pressure Regulator on Sample Pump
4. Leak Check Sample System
MAINTENANCE PROCEDURES
Before performing any maintenance on the cooler, ensure that all plant safety procedures are followed. As with any
electrical device, ensure power is removed before performing any procedures.
The cooler is designed for maintenance free operation but if any is required, ensure power has been removed before
maintenance or repair is performed.
REPLACEMENT OF PERISTALTIC TUBING (IF EQUIPPED)
1. Please refer to manufactures website for instructions: http://www.masterflex.com/catalog/product_view.asp?-
sku=0701520
2. YouTube: http://www.youtube.com/watch?v=zC1INbSnf8o&feature=player_embedded#at=242
REPLACEMENT OF SAMPLE PUMP DIAPHRAGM
1. Please refer to manufactures website for instructions: http://www.airdimensions.com
INSTALLING OR REPLACING HEAT EXCHANGERS
REMOVING THE HEAT EXCHANGER
1. Remove the inlet and outlet tubes by loosening the compression fittings. Always use a backup wrench on the fitting
body to ensure no damage to the heat exchanger occurs.
2. Remove the drain fitting using the same procedure as the inlet/outlet. Remove the drain fittings from the exchanger.
Use a backup wrench on the lower heat exchanger hex to prevent damage to the exchanger.
REPLACING THE HEAT EXCHANGER
1. Dry and clean the heat exchanger opening in the heat transfer block using a dry, lint-free cloth (If reusing the heat
exchanger, clean the outside as well.) Dried heat transfer paste can be removed by using a very fine abrasive pad
wrapped around a drill bit
2. Apply a thin layer of heat transfer paste onto the outer diameter of the heat exchanger.
3. Gently push the heat exchanger into the heat transfer block until the head is fully seated against the insulation on top.
4. Reinstall the drain fitting. Ensure pipe tape is used on the pipe threads before installation. Use a backup wrench on
the heat exchanger lower hex to prevent damage to the exchanger.
5. Reconnected the drain, inlet and outlet tubes.
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