Position drum on stand so large bunghole is on bottom and small bunghole is on top when drum is tipped Into
Connect hose containing valve RO14 to small threaded drum bunghole.
Connect hose containing valve RO13 to large threaded drum bunghole.
4-7.4.4 RO block throttling valve lubrication.
Clean grease from RO block throttling valve R07 using a clean, lint-free cloth.
Using a hand pump grease gun, pump grease (MIL-G-10924) Into bearings until grease appears.
Wipe off excess grease.
4-8. Component repair or replacement.
4-8.1 Pretreatment skid.
4-8.1.1 Chemical metering pump replacement. Remove and replace chemical metering pumps as follows.
Avoid exposure to coagulant (Hydrapol-50) and inhibitor (Hydrapol-100). Until pump has been
cleaned, wear safety goggles or faceshield and rubber gloves. If chemicals are swallowed, do
not induce vomiting. Drinkwater and seek medical attention. If chemicals get In eyes, flush with
water and seek medical attention. If chemicals contact skin, wash with soap and water.
Remove chemical metering pump as follows.
Turn pump off by setting pump ON/OFF switch on control station (Figure 3-1) to OFF.
Redtag switch with "WARNING - DO NOT ACTIVATE REPAIRS BEING MADE".
Unplug two clamping nuts and remove suction discharge tubes from valves on rear of pump.
Remove all clamps from pump cable.
Tag and disconnect wires in electrical enclosures.
Wash pump with water to remove any chemicals.
Remove nuts, mounting screws, and flatwashers from pedestal. Remove pump.
Install chemical metering pump as follows:.
Install pump on pedestal using two flatwashers, mounting screws, and nuts.
Connect wires in electrical enclosure Remove tags.
Install damps on pump cable.
Install suction and discharge tubes on valves on rear of pump Tighten clamping nuts.
Remove red tag from pump ON/OFF switch.
After reinstallation, prime pump according to paragraph 4-7.1. 5.