PCBRM_User_Manual_R9.pdf - 第71页
Pcbrm15 & PCBRM System 5.2 User’s Manual Chapter 5: Maintenance/Parts Part No. 4005.00.906 5- 3 5 Maintenance/Parts 5.0 Preventative Maintenance Schedule CAUTION: A LL SAFETY PRACTICES MUST BE OBSERVED . Daily: • Cle…
Pcbrm15 & PCBRM System 5.2 User’s Manual Chapter 5: Maintenance/Parts
Part No. 4005.00.906 5-2
Pcbrm15 & PCBRM System 5.2 User’s Manual Chapter 5: Maintenance/Parts
Part No. 4005.00.906 5-3
5 Maintenance/Parts
5.0 Preventative Maintenance Schedule
CAUTION:
ALL SAFETY PRACTICES MUST BE OBSERVED.
Daily:
• Clean exterior of machine to rid of solder deposits, flux, and dirt.
− Use household cleaners like “409”.
− For non-water soluble dirt (flux) use mineral spirits.
Note:
WHEN CLEANING BE CAUTIOUS OF PAINTED SURFACES, LABELS, OR PLASTIC (SWITCHES)-
PROLONGED CONTACT OF SOLVENTS WILL ATTACK SURFACE.
• Remove dross from flow well and pot cover. The inherent nature of solder generates dross as a
by-product which must be removed periodically depending on the module usage and in-house
criteria. Dross removal can be accomplished only when solder is molten.
• Remove dross from top of solder bath. Remove dross from around impeller shaft. A fine black
powder will collect at the surface where the rotating impeller shaft enters the molten solder.
Remove with spatula tool. Dispose of dross in a metal container. The dross is at a very high
temperature and should not contact anything that can melt or catch fire.
• Report any problem to supervisor. Fix any problems before further damage to the machine or
customer assemblies occur.
Weekly:
• Apply film of oil on all surfaces which solder may fall (except pot cover). Apply 3 in 1
household oil to metal surfaces (around solder pot area) to inhibit solder and flux from permanently
sticking to them. Remove side shields to get access.
Note:
SOLDER POT MUST NOT BE HEATED.
• Apply oil to board carrier. To protect from rusting apply oil to rails and arms of carrier. If rust
appears, it can be removed with WD40 and fine emery cloth or scotch brite pads.
Note:
THE CARRIER RAIL IS SUSCEPTIBLE TO THE ENVIRONMENT. IT IS STRONGLY RECOMMENDED
TO CLEAN AND OIL CARRIER FREQUENTLY.
• Add Solder (as required).
Pcbrm15 & PCBRM System 5.2 User’s Manual Chapter 5: Maintenance/Parts
Part No. 4005.00.906 5-4
5.1 Solder Removal
• Use Solder Bailer to transfer solder to a container with a capacity of 150 cubic inches or more.
Most of the solder can be removed with the bailer. Weight of solder is 35 lbs.
CAUTION!!
SOLDER IS HOT. USE EXTREME CAUTION.
5.2 Pump Cleaning
Pump bracket, housing, impeller and shaft are all rugged, stainless steel. The pump bearings are
lubricated with high temperature grease. Heat is not the main reason for their failure – rather it is dirt
(dross, flux).
Note:
WHEN REMOVING PUMP FOR CLEANING, SOLDER MUST BE REMOVED FROM POT.
To Clean Pump
1. Hold pump in a vise for disassembly.
2. Do not remove leveling screws.
3. Clean all parts (except pump bearings) thoroughly:
• Use mineral spirits to remove dirt.
• Use a wire brush for easy to get at areas.
• Use a scraping tool for hard to reach areas.
4. Inspect parts before reassembling (especially pump bearings). Check bearings for free, smooth
action – no binding or rough action, if so, replace.
Assembly (see Disassembly Procedure)
5. Be certain when assembling the pump housing to pump bracket that the alignment guides are
lined up exactly. This will insure that the pump is level when installed back onto the machine. If
they are not lined up or if the leveling screws were removed, the result will be an un-level solder
wave and very poor soldering or desoldering processes.
6. Spin pump shaft to be certain that the pump is assembled correctly before placing back on
machine.
Note:
O NCE PUMP IS INSTALLED ONTO THE MACHINE, CHECK THE LEVEL OF THE PUMP. IF
ADJUSTMENT IS NEEDED, REFER TO PUMP LEVELING PROCEDURE.