Follow
Objective: To establish a standard procedure for maintenance of softener in the purified water system.
Scope: This SOP is applicable for the softener of the purified water system of (Company Name).
Responsibility
Operator shall be responsible to follow the procedure strictly.
Supervisor shall be responsible to ensure that the SOP is followed properly.
Accountibility: Head of Engineering.
Precautions: Concerned personnel should be trained on the SOP.
Procedure
6.1 Carry out the works as per the Maintenance Check list shown in ANEXURE-I. The format annexed is of duration of 6 months. For the use of subsequent period of different durations, the same format with appropriate month and year to be printed in the format. This printed format will be a controlled copy issued by Q.A. Carry out the following steps every month for maintenance of softener:
6.1.1 Clean the brine tank.
6.1.2 Check all the solenoid valves for proper connection and operation.
6.1.3 Check the micron filter & clean it by installing in reverse direction for 10 minutes.
6.1.4 After cleaning the filter, install the filter housing in original position and check for leakage.
6.2 Following steps are to be carried out once in a year:
6.2.1 Disconnect the inlet & outlet connection of softener. Drain out the water inside the softener by opening the manhole.
6.2.2 Check the condition of strainers (mushrooms). If required, replace the damaged strainers.
6.2.3 Clean the brine tank & prepare 50% v/v solution of sodium chloride (salt).
6.2.4 Put the resins in to the solution for 3 to 4 hours.
6.2.5 Take out the resins and wash with clean water.
6.2.6 Refill into the softener.
6.2.7 Give proper inlet/outlet connections.
6.2.8 Open the inlet and outlet valve and check for leakage.
6.2.9 Select normal regeneration process manually.
6.2.10 Check the hardness of water after regeneration. The limit is 10 ppm.
6.2.11 Clean the area.
6.3 Record the description of work and spare parts used (if any)
