ABB SCK - Checking and Topping Up Cooling Water: Cooling Module

210 Operating instruction SCK Gas Sampling System OI/SCK-EN Rev. E
Cooling module: Checking and topping up cooling water
The closed cooling-water circuit must be filled with approx. 50 l potable water
(do not use anti-corrosive). In ambient temperatures below 0 °C admix ap-
prox. 20 l anti-freeze.
If ambient temperatures below 0 °C can be expected, you must admix anti-
freeze. ABB recommends Glykol as anti-freeze. Anti-freeze with anti-corrosive
additive is not permitted.
Check cooling water pressure and cooling water flow rate on a daily basis.
Completely replace the cooling water every two years.
Always take the following safety measures when performing this work:
 Wear the general protective equipment.
 Before commencing work on the cooling-water circuit, turn the service
switch to ON and secure the service switch against unauthorized switch-
ing (with a padlock).
 Only specialized electrical personnel may work on the electrical system.
 Do not perform work on the cooling-water circuit until the cooling water
has cooled down.
 Avoid contact with the cooling water and the anti-freeze.
 Wash any cooling water and anti-freeze off the skin immediately with
water and soap.
 If cooling water or anti-freeze gets in the eyes despite protective glass-
es, rinse them thoroughly under running water, holding the eyelids open.
 Observe instructions in the anti-freeze manufacturer's safety data sheet.
 Always keep the floor around the gas sampling system clean and dry.
Explanation of safety measures: Safety regulations for maintenance work on
page 158.
 Control cabinet key to open the control cabinet
The following steps are necessary to check cooling water pressure and cool-
ing water flow rate:
Step Procedure
1
During operation, observe cooling water pressure and cooling
water flow rate on the controller, Trends submenu.
2
Top up cooling water if
 pressure drops below 2-2.5 bar (2000-2500 hPa)in operation
 or cooling water flow rate is < 50 l/min.
Cooling-water
requirements
Anti-freeze
requirements
Maintenance interval
Safety
measures
Tools required
Checking cooling
water