5
MAINTENANCE SCHEDULE:
ACTION REQUIRED
DAILY
50 HRS
250 HRS
500 HRS
ANNUAL
1.
Replace high pressure nozzle/jet
As
required
YES
YES
YES
2
Check Water Filters – Clean or Replace if
damaged
YES
YES
YES
YES
YES
3
Inspect for leaks and repair all HP Accessories
like gun, hose, swivel, hose reel swivel, nozzle
YES
YES
YES
YES
YES
4
Inspect all electrical cabling for damage or
wear – repair by qualified electrician
YES
YES
YES
YES
YES
5
Check High Pressure Switch & Flow Switch
and replace if faulty
YES
YES
YES
YES
6
Check Oil level in Pump (sight glass half full)
YES
YES
YES
YES
YES
7
CHANGE pump oil – SAE 15W40 / SAE 30
YES
YES
YES
YES
8
Strip and Refurbish pump:
- Replace Plunger Rod Oil Seals (3/pump)
- Replace Brass Valves (6/pump)
- Replace various seals (3/pump)
- Replace Ceramic Piston Plungers if
cracked or worn (3/pump)
Only if
required
9
Check By-Pass valve function test - re-kit or
replace if required
YES
YES
YES
10
Function test all Safety Shutdowns & By-Pass
timed shut-down
YES
YES
YES
11
Have an Authorised Electrician Test & Tag
electrical equipment as Specified by Law
As required by law
12
CONTROL PANEL – Have an Authorised
Electrician Fully Function Test - Repair or
Replace all Electrical Components.
As required or annually
13
Check Tyre Pressure
Weekly or as required
MAINTENANCE TIPS:
USE THE FOLLOWING GUIDE WHEN CONSIDERING MAINTENANCE:
Always test your machine using a new high pressure nozzle - correctly sized for set-up pressure
and flow.
Before you start pulling pumps apart, do obvious checks first:
•
Worn Jets
•
Air Leaks
•
Engine Speed (Not too low)
•
Power Supply (Not too low when using long leads on 240 Volt units)
•
Suction Filters (Blocked?)
•
Water supply volume (Not too low)
As a guide in normal use, consider the following:
-
After replacing 10 x high pressure Stainless Steel jets/nozzles, it is time to replace the
seals on the pump using a Seal Kit.
-
At the same time, also replace the seals on the By-Pass Valve using a By-Pass kit, or if
economically viable, replace by-pass valve.
-
By-Pass Valves will take 3-5 rebuilds before body wear becomes too much and
replacement is needed.
-
Do a whole pump changeover at 1,000 – 1,200 hours. (Con Rods, Big Ends & Crankshaft)
-
Pistols, swivels & H.P. Hoses are usually uneconomical to repair. Replace as necessary.