TM063 701, 702 & 703 Series Boiling Water Unit Service Instructions 5
Revision D: Feb 2017
This document is stored and maintained electronically by Service. All printed copies not bearing this statement in RED are deemed “uncontrolled”
It is suggested for peak performance that the BWU be serviced every six months.
Servicing must be performed by suitably qualified persons.
Hot surface or liquid. Personal Protective Equipment (PPE) shall be worn to
reduce the risk of burns or scalding.
1. Check the inlet strainer located inside the water inlet connection to ensure it is clean
and not blocked with foreign matter. If an additional auxiliary filter is fitted, such as in
areas of poor water quality check to ensure it is also clean and not blocked with foreign
matter.
2. Check for signs of excessive corrosion on jacket and internal panels. Corrosion can be
indicative that a leak is present.
3. Check for leaks at all BWU fittings and seals.
4. Check the vent line to ensure it is not blocked with foreign matter. It is imperative that
the vent line does not become blocked as the BWU is not designed to be
pressurised.
5. Isolate power and check all electrical connections for signs of overheating due to poor
connection.
6. Conduct an electrical insulation test. (Refer to page 45).
7. Check tap for signs of leaking & excessive dripping after operation (clean or replace if
required.
WARNING
This Boiling Water Unit contains electronic equipment and insulation tests must
only be conducted between neutral and earth or between active and earth.
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