Pressure Test - WDM NE Series Operation Manual

Operation Manual.
Model
NE 4 450/750/1130/1500
NE 6 9/180/240
NE 6 300/480/600/750
cause buildup dangerous pressure that may destroy the pump. Allow
1.75" of air space below top of the motor housing.

Pressure Test

Casing: The oil should be at the correct level to check for any leaks
around the shaft seal, square rings, and cables. Remove the pressure
valve (22) from the motor housing (16). Apply the sealant and then
tighten the pressure gauge into the pressure valve (Diagram No. 3).
Apply air pressure into the motor housing at 10 P.S.I. Next, pour soapy
water around the sealed areas to see if any "air bubbles" occur. If after 5
minutes at a constant air pressure of 10 P.S.I. no "bubbles" occur then
remove the pressure gauge and air pressurizer and replace the valve
and seal. If "bubbles" do occur, then there is a leak that must be located
and repaired.
Seal Chamber: Remove the pipe plug (31) and check that the chamber is full
of oil. Then apply pipe sealant to the pressure gage and tighten into the
bearing bracket's hole. Pressurize the seal to 20-25 P.S.I. and follow the
steps above to see if any "bubbles" occur indicating a leak.
14
Gallons
CAUTION.
Do not completely fill the motor casing with oil as this can
Casing
Liters
2.5 9.5
15.0 56.8
11.0 41.6
Seal chamber
Gallons Liters
0.3 1.1
0.4 1.5
0.4 1.5