gledhill StainlessLite D120 Design, Installation & Servicing Instructions page 27

SERVICING AND MAINTENANCE
START
YES
Is incoming mains supply
flow/pressure adequate?
YES
Is in-line strainer
(in combination valve)
clean?
YES
Is pressure reducing valve
(in combination valve)
working?
YES
Is system free from
restrictions/blockages?
YES
END
START
Is pressure downstream
of pressure reducing valve
NO
correct?
YES
Is valve seal and seat
clean & undamaged?
YES
YES
Is heater operating at
less than 60ºC?
NO
Re-set temperature
NO
Water service check by
supply company required
NO
Clean or replace strainer
as appropriate
NO
Service /replace PRV
as appropriate
NO
Clear obstructions
NO
Clean or replace
as required
Is expansion vessel
charge pressure correct?
YES
Replace ERV/TPRV
Replace PRV
FAULT - Poor Water Flow at Hot Taps
FAULT - Water Discharge Into Tundish
NO
Recommission
expansion
vessel pressure
YES
Is ERV/TPRV
discharging?
NO
END
Page 27
FAULT FINDING