© R.E.Morrison Equipment Inc. 2012
BaseVac™ M-Vac Series Installation Guide
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10
Troubleshooting Guide
Problem Potential cause Symptom Solution
Pump will
not start
Electrical
- Main fuse failure
Activate remote
switch, nothing
happens
- Check main fuse or breaker, reset or replace
Electrical
- Breaker OK, pump
still will not start
Activate Pump panel
switch to ON, nothing
happens
- Check and reset overload in pump control panel.
Mechanical
- Vanes worn or
broken
Pump keeps tripping
breaker when turned
on
If hour meter shows 6000 to 7000, vanes may have
broken and need to be replaced, follow vane replacement
guide.
Pump internals have
been flooded or
seized with rust.
Pump keeps tripping;
vanes are OK. Pump
rusted inside
Remove vanes (see vane replacement guide). Use sand
paper to remove visible rust. Using an Allen key, free the
rotor with centre shaft bolt. Clean and replace vanes.
Low or Poor
Vacuum
Clogging of filters and
separators
Gradual drop in
suction
- Clean all air filters in the line
- Inspect amalgam separator to insure it is not full
- Clean air-water separator
Air Water separator
full, float blocking inlet
Low or no vacuum Turn pump o, wait 4 minutes for tank to drain and make
sure drain valve is open (handle up)
Pump problem Sudden drop in
suction, vanes noise
sounds dierent
- Inspect the pump for broken vanes using vane
replacement guide
- Insure vacuum regulating valve is turned all the way in
Pump room is
excessively hot
Exhaust piping The pump room heats
up during the day.
- Look for and correct leaks, crack or separation in exhaust
or piping
- Remove outside obstructions, example bird nest,
garbage receptacle
Liquid leaking
from front of
pump
Air water separator
malfunction
Pump continues to
run water leaks from
pump exhaust and
filter cover. Pump
in-line “white” filter
bowl full.
- Inspect float switch in air water separator, clean and or
replace
- If using remote drain pump, check fuse
- Remote drain pump
- Check for drain obstructions
Important: Correct problem and drain water from pump by
following steps in vane replacement guide. Dry the pump
with rags. Reassemble pump and immediately run the
pump for minimum of 4 hours until it is dry.
Condensation in
exhaust line
Water is leaking from
front of pump but
inline “white” filter
is dry.
- Inspect and drain drop leg condensate traps on exhaust
piping
- Insure exhaust piping slopes away from pump exhaust
port
- Review exhaust piping guidelines
Noise in exhaust
piping
Vibration from Pump
transferred to piping
The resonating sound
changes with pump
load.
- Check for rigid mounting connections and remove them.
- Replace a section of rigid pipe with flex hose.
- Install exhaust silencer
The vibration sound
never changes.
- Inspect pump to insure it is installed level with no
brackets connected from the pump frame to wall or floor
- Insure nothing is leaning against the pump or exhaust
piping
