Table 4-2. Preventive Maintenance Checks and Services for ROWPU System
Q - Quarterly
S - Semiannually
A - Annually
CHECK FOR AND HAVE
IS NOT READY/
REPAIRED OR ADJUSTED
B D A D W M Q S A
Be sure electrical power is OFF before
performing any maintenance on electrical
systems. Redtag appropriate switches
and circuit breakers with: "WARNING -
DO NOT ACTIVATE. REPAIRS BEING
MADE." Observe all safety precautions at
the beginning of this manual. Hazardous
chemical materials are used with this
equipment. Always use approved breath-
ing devices when working with chemi-
cals. Avoid chemical contact with eyes,
skin and clothing. Always wear safety
glasses, gloves, and rubber aprons when
When performing BEFORE and AFTER
PMCS, make sure all circuit breakers are
1. Circuit breakers P5 and P8 are
open (OFF) to panels 1 and 2.
2. Power panel circuit breaker 9P5 is
open (OFF) to chlorinate unit con-
3. Power panel 1 circuit breaker 10P5
is open (OFF) to metering pump
4. Power panel 2 circuit breaker 8P8
in open (OFF) to vent for 8 con-
a. .Wipe all components clean, especially
flowmeters, indicators, control panels
and electrolytic cells (Void 2 port).
b. Check for leaks paying special attention
Class III leaks.
to joints, valves, fittings and piping.
Report leaks to shift leader or bargemas-
ter for corrective action.