Instruction Manual
D450013T012
August 2016
Type P520L
Type P520L Reamer
Introduction
The Type P520L tapered reamer is calibrated for propane
vapor by drill size. Refer to the NATIONAL FUEL GAS CODE,
NFPA 54-2006, Table F.1 (b) and Table F.1 (c) for BTU/hour for
a specific orifice and gas size. Use Type P520L to enlarge or
clean out orifices on LP-Gas appliances ranging from drill size
no. 52 to 30 (0.0635 to 0.125 in.).
Use the reamer as follows:
The reamer is designed with knurls on the handle for better
grip. Make sure reamer is held in vertical position while doing
the following steps.
To enlarge orifices:
1.
Loosen the reamer by twisting the knurls against the
slide rule.
2. Push the slide rule towards the end of the reamer body
until the cursor points to the desired orifice or drill size.
3.
Once the cursor is aligned with the desired drill size,
lock position by twisting the knurl in opposite directions.
4.
Hold the orifice with one hand and the reamer with
the other.
5.
Insert the tip of the reamer into the orifice as far as it
can go.
6.
Start reaming until the orifice contacts the end of the
reamer body.
7.
Remove the reamer from the orifice.
8.
Unlock the reamer and retract the slide rule to the fully
closed position.
9.
Lock handle.
To check orifice sizes:
1. Loosen the reamer.
2. Extend the reamer tip fully.
3.
Lock the reamer.
4.
Insert the reamer tip into the orifice until it sits
quite snugly.
5.
Unlock the reamer and allow the handle to drop and
contact the tip of the orifice.
6.
Lock position.
7. Read the indicated drill size
8. Remove the reamer and retract the slide rule to the fully
closed position.
9.
Lock handle.
CAUTION
Always retract the reamer to the
fully closed position and tighten the handle
before placing the reamer into pocket. Failure
to do so may result in personal injury.
This reamer can also be used on appliance orifices
where gas other than propane is used. The following
chart shows the BTU Orifice Capacity by Gas and Orifice
Sizes. (Tables are from NATIONAL FUEL GAS CODE,
NFPA 54-2006, 2006 edition.)
Figure 1.
Type P520L Reamer
hANdLe wITh
kNURLs
CURsOR
dRILL mARks
sLIde RULe
ReAmeR TIP
exTeNds AT
ThIs eNd
mARkINgs
ReAmeR TIP
P2115_1
P2114_1
P2116_1
