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Q-SERIES DI HEATER OPERATION / MAINTENANCE MANUAL
8.1.f Overpressure Relief Fitting Replacement
Turn power off to system (see Section 2.3 for Lockout/Tagout
procedures).
Drain system (see Section 8.1.d, Draining the System).
Remove and replace overpressure relief fitting (note orientation of
fitting).
Refill system.
Inspect for leaks.
Figure 8-2
8.2 PREVENTIVE MAINTENANCE SCHEDULE
Init
ial
S
tart
Week
ly
6 M
on
ths
Items
V
isu
all
y
Ins
pe
ct
Tighten
X
X
Process Control / Heater Element Status
X
X
X
Plumbing Leaks
X
X
X
Overpressure Relief Drain & Diaphragm
X
X
X
General Electronics
X
X
X
Solid State Relays (SSR’s)
X
X
X
Main Circuit Breaker
X
X
X
Distribution Breakers & Contactors
X
X
X
Branch Circuit Breakers
X
See following table for details on each item.