Instruction manual

Operation Frequency Refer to Section
Check the gearbox oil-level Monthly 5.3
Inspect the pipelines and connections 6 Monthly 5.4
Change the gearbox oil 6 Monthly 5.5
Relubricate the rotor bearings 6 Monthly 5.6
Change the head-plate felt filter Yearly 5.7
Change the gas-ballast air filter element Yearly 5.8
Clean the inlet-stage sump As required 5.9
Clean the cooling-jacket As required 5.10
Table 4 - Maintenance plan
5.3 Check the gearbox oil-level
Refer to Figure 4. Check the pump gearbox oil-level on the sight-glass (4). The level of oil must be
between the MIN and MAX marks when the pump is off and is cold:
• If the oil-level is below the MIN mark, pour more oil into the DP180 until the oil-level is
correct: refer to Section 3.3.
• If the oil-level is above the MAX mark, drain oil from the gearbox until the oil-level is correct:
refer to Section 5.5.
5.4 Inspect the pipelines and connections
1. Inspect all of the cooling-water connections and check that they are secure; tighten any loose
connections. Inspect all of the cooling-water pipelines and connections and check for leaks;
seal any leaks found. Inspect all of the cooling-water pipelines and connections and check
for corrosion and damage; repair or replace any corroded or damaged component.
2. Inspect all of the gas-ballast boost connections and check that they are secure; tighten any
loose connections. Inspect all of the gas-ballast boost pipelines and connections and check
for leaks; seal any leaks found. Inspect all of the gas-ballast boost pipelines and connections
and check for corrosion and damage; repair or replace any corroded or damaged
component.
3. Inspect all of the electrical connections and check that they are secure; tighten any loose
connections. Inspect all of the electrical cables and check that they are not damaged and have
not overheated; replace any damaged or overheated cable.
4. Inspect all of the vacuum connections and check that they are secure; tighten any loose
connection. Inspect all of the vacuum pipelines and connections for corrosion and damage;
replace any corroded or damaged components.
DP180 Dry Vacuum Pump 23