Dealkalisation Service Schedule

You are here > Dealkalisation> Service Schedule

(Please note that this is a typical specification and Industrial Water Equipment Ltd provide site specific service schedules for your sites specific requirements)

Site Safety and Regulatory Compliance
Industrial Water Equipment Ltd will advise site contact 48 hours prior to intended visit date.

1.1 – Industrial Water Equipment limited engineer to register with security and reception before proceeding to site.
1.2 – Iwe ltd to register with site contact and obtain any required on site permits to work.
1.3 - Inform the site contact of any isolation mechanical oe electrical in relation to the service visit
1.4 – Adhere to sites code of PPE and ensure all Iwe engineers have the required level of required PPE.
1.5 - Inform site engineer that all site services (water) have been restored on completing any service work.
1.6 - Contact site engineer/responsible person. Discuss finding of service and relevant actions to be undertaken.
1.7 Obtain signature from relevant person and leave completed report.

Records
2.1 - Examine the equipments site records to establish performance of plant since last service visit.
2.2 -Record any variation in raw water and treated water quality from the dealk and establish reason for any variance from last visit.
2.3- Confirm the dealks treated water capacity and quality requirements.

Water Quality

Analyse and record thechemical quality of raw dealk inlet water to softener.
Analyse and record the chemical quality of the dealk outlet water from softener vessel(s).
Analyse and record the chemical quality of any stored treated water after the dealk system.
Take sample of;

• Raw inlet water to dealk.
• Outlet water from dealk vessel(s).
• Any stored treated water post dealk equipment.

Typical mechanical checks for Dealk Units

4.1 Discuss and examine previous site softened water outlet results and dealk outlet alkalinity results. Examine pH test results for pH alkali correction.
4.2 Carry out on-site analysis of make-up water for both total hardness and bicarbonate alkalinity. Establish if any change in raw water composition has occurred since previous service visit.
4.3 Confirm that plant regeneration capacities are correct for the dealk column and the base exchange column. Confirm that flow rate through dealk and temp. of water feeding dealk has not changed and, hence, capacity is in line with design.
4.4 Inspect general condition of dealk, degas and base exchange and associated plant for leaks or general wear and tear.
4.5 Check raw water break tank and low level pump protection.
4.6 Check that flow rate remains set at design flow through dealkalisation column.
4.7 Check acid regenerant draw and acid fume removal system, if fitted.
4.8 Check acid neutraliser tank (Magnadol), where fitted, and that outlet pH to drain is satisfactory.
4.9 Inspect the dealkalisation regeneration and service flow control valve. For dealkalisation plants using diaphragm valves on a manifold for plant regeneration and service flow, these diaphragm valves to be sequentially inspected.
5.0 Check level controls in degas sump.
5.1 Check pH caustic correction pump and check for satisfactory pH correction.
5.2 Buffer pH probes on the dealkalisation unit and on pH correction.
5.3 Train on-site operators in the procedure for buffering pH.
5.4 Inspect and service the base exchange softener control valve (Fleck, SIATA or similar). Clean, grease and check all seals/diaphragms and moving parts on the control head. For SIATA, remove each port and check/replace 'O' seals, as required.
5.5 For base exchange softening plants using diaphragm valves on a manifold for plant regeneration and service flow, these diaphragm valves to be sequentially inspected and made good, as necessary.
5.6 On at least an ANNUAL basis, where possible, remove base exchange softener and dealkalisation column head and check resin bed depth. Take sample of resin for analysis to establish if resin is cracked or fouled (organic or inorganic).
5.7 As necessary, check service and dismantle brine draw valve, eductor and brine check valve.
5.8 Check strength of brine regenerant and record.
5.9 Carry out a full plant regeneration, if plant status permits, for the purpose of establishing:
6.0 Correct regenerant draw and air check
6.1 Correct salt tank and acid tank re-fill
6.2 Performance of control heads/diaphragm valves
6.3 Resin loss during regeneration
6.4 Solenoid operation

Industrial Water Equipment Ltd
4 Causeway Lane, Matlock
Derbyshire, DE4 3AR
TEL: +44 (0)1629 55839
FAX: +44 (0)1629 501055

-------------------------------------

2nd Floor, 13 Upper Baggot Street, Dublin 4, Ireland
TEL: + 00 353 14428670

info@industrialwaterequipment.co.uk

24Hr Helpline - Emergency
Number : 07775 661688